United States: 2002

2002 Economic Census

Vehicle Inventory and Use Survey

Geographic Area Series

Issued December 2004

EC02TV-US

U.S. Department of Commerce

Economics and Statistics Administration

U.S. CENSUS BUREAU
Many persons participated in the various activities of the 2002 Economic Census, Vehicle Inventory and

Use Survey.

This report was prepared in the Service Sector Statistics Division under the direction of Thomas E.

Zabelsky, Assistant Division Chief for Current Service and Transportation Programs. Planning,

implementation, and compiling of this report were directed by John P. Miller, Chief, Transportation

Characteristics Branch, assisted by Joy P. Pierson, Donald F. Cheza, William J. Marshall, Erika

McDonald, Vernetta N. Southerland, Kathleen R. Walsh and William C. Jones.

Sample design and statistical methodology were provided under the direction of Ruth E. Detlefsen,

Assistant Division Chief for Research and Methodology. Sample design and estimation methods were

developed under the supervision of Jock Black, Chief, Program Research and Development Branch,

assisted by William C. Davie Jr., M. Cristina Cruz, and Brett Moore. The imputation procedures

were developed under the supervision of Carol S. King, Chief, Statistical Methods Branch, assisted by

James N. Burton and Tameka Johnson.

Systems and procedures for mailout, quality control, and check-in operations were developed in the

Economic Planning and Coordination Division, Bernard J. Fitzpatrick, Assistant Division Chief for

Collection Activities. Mailout and check-in procedures were developed under the supervision of Sheila

Proudfoot, Chief, Mailout and Data Capture Branch, assisted by Christopher Berbert, Betty McKay,

and Bernadette Gray.

Systems and procedures for data entry and quality control were developed and implemented in the

Decennial Systems and Contracts Management Office under the direction of Dennis Stoudt, Assistant

Division Chief for Processing Systems. The Data Conversion Systems Branch, Warren McKay, Chief, was

responsible for the development and implementation of the automated tracking and image management

system. The Processing Coordination and Requirements Branch, Derrell Matthews, Chief, coordinated

the technical requirements for the image system.

The processing system and computer programs were developed and implemented in the Economic

Statistical Methods and Programming Division, under the direction of Barry F. Sessamen, Assistant

Division Chief for Post Collection. Computer programming and implementation were provided by

Steven G. McCraith, Chief, Census Related Surveys Branch, assisted by Barbara Love Lambert,

Evelyn Cabrera, Preet Toor, and Eric M. Weiss.

The Systems Support Division provided the table composition system. Robert Joseph Brown, Table

Image Processing System (TIPS) Senior Software Engineer, was responsible for the design and

development of the TIPS, under the supervision of Robert J. Bateman, Assistant Division Chief,

Information Systems.

Margaret A. Smith of the Administrative and Customer Services Division, Walter C. Odom, Chief,

provided publications and printing management, graphics design and composition, and editorial review

for print and electronic media. General direction and production management were provided by

James R. Clark, Assistant Chief, and Susan L. Rappa, Chief, Publications Services Branch.

The staff of the National Processing Center, Judith N. Petty, Chief, performed mailout preparation and

receipt operations, clerical and analytical review activities, telephone operations, and data entry assisted

by Carlene Bottorff, Karen S. Blessett, Sandra Hurst, and Debbie Woods.

Special acknowledgment is also due to the many respondents whose cooperation contributed to the

publication of these data.

Please direct inquiries concerning this report to John P. Miller, U.S. Census Bureau, 4700 Silver Hill

Road, Mail Stop 6500, Washington, DC 20233-6500. Call 301-763-2797 or 301-457-2278 (fax).

ACKNOWLEDGMENTS
United States: 2002

2002 Economic Census

Vehicle Inventory and Use Survey

Geographic Area Series

Issued December 2004

EC02TV-US

U.S. Department of Commerce

Donald L. Evans,

Secretary

Theodore W. Kassinger,

Deputy Secretary

Economics and Statistics Administration

Kathleen B. Cooper,

Under Secretary for

Economic Affairs

U.S. CENSUS BUREAU

Charles Louis Kincannon,

Director
Vacant,

Principal Associate

Director for Programs

Frederick T. Knickerbocker,

Associate Director

for Economic Programs

Thomas L. Mesenbourg,

Assistant Director

for Economic Programs

Mark E. Wallace,

Chief, Service Sector

Statistics Division

ECONOMICS

AND STATISTICS

ADMINISTRATION

Economics

and Statistics

Administration

Kathleen B. Cooper,

Under Secretary

for Economic Affairs

U.S. CENSUS BUREAU

Charles Louis Kincannon,

Director

Hermann Habermann,

Deputy Director and

Chief Operating Officer
CONTENTS

Vehicle Inventory and Use Survey 1 

Figures

1. Light Truck Registrations: 2002 10 

2. Medium and Heavy Truck Registrations: 2002 10 

Tables

A. State Registration Rankings: 2002 and 1997 11 

1a. TrucksComparative Summary: 2002 and Earlier Years 12 

1b. TrucksComparative Summary for Trucks, Excluding Pickups,

Minivans, Other Light Vans, and Sport Utilities: 2002 and

1997 12 

2a. Trucks, Truck Miles, and Average Annual Miles for All Trucks:

2002 and 1997 13 

2b. Trucks, Truck Miles, and Average Annual Miles for All Trucks

Measures of Sampling Variability: 2002 and 1997 19 

3a. Trucks, Truck Miles, and Average Annual Miles for Trucks,

Excluding Pickups, Minivans, Other Light Vans, and Sport

Utilities: 2002 and 1997 25 

3b. Trucks, Truck Miles, and Average Annual Miles for Trucks,

Excluding Pickups, Minivans, Other Light Vans, and Sport

UtilitiesMeasures of Sampling Variability: 2002 and 1997 31 

4. Trucks by Vehicle Size: 2002 37 

5. Trucks by Truck Type: 2002 42 

6. Truck Miles by Vehicle Size: 2002 47 

7. Truck Miles by Truck Type: 2002 52 

8. Truck Miles Distribution by Operational Characteristics: 2002 57 

Appendix

Approximating Unpublished Relative Standard Errors A–1 

Vehicle Inventory and Use Survey Contents iii

U.S. Census Bureau, 2002 Economic Census
Vehicle Inventory and Use Survey

The Vehicle Inventory and Use Survey (VIUS) provides data on the physical and operational characteristics of the nation’s truck population. This survey is conducted every 5 years as part of the

economic census. Its primary goal is to produce national and state-level estimates of the total

number of trucks.

The 2002 VIUS is a probability sample of private and commercial trucks registered (or licensed) in

the United States as of July 1, 2002.1 A sample of about 136,113 trucks was surveyed to measure

the characteristics of nearly 89 million trucks registered in the United States. The VIUS excludes

vehicles owned by federal, state, and local governments; ambulances; buses; motor homes; farm

tractors; unpowered trailer units; and trucks reported to have been disposed of prior to January 1,

2002.

Registration practices for commercial vehicles differ greatly among the states. Some states register a truck-tractor semitrailer combination as a single unit; others register the tractor and the

semitrailer separately. For either method of registration, only truck-tractors are included in the

registered truck counts. In addition, some states allow pickups, small vans, and sport utility

vehicles to be registered as either cars or trucks. Therefore, passenger car files were searched and

any such vehicles were included in the sampling frame. Some vehicles, such as ‘‘off-highway’’

trucks used exclusively on private property, are not required to be registered. These vehicles were

not included in the sampling frame and had no chance of being selected for the survey.

PURPOSE AND USE OF DATA

The economic census is the major source of facts about the structure and functioning of the

nation’s economy. It provides the framework for such composite measures as the gross domestic

product, input/output measures, production and price indexes, and other statistical series that

measure short-term changes in economic conditions.

VIUS data are of considerable value to government, business, academia, and the general public.

Data on the number and types of vehicles and how they are used are important in studying the

future growth of transportation and are needed in calculating fees and cost allocations among

highway users. The data also are important in evaluating safety risks to highway travelers and in

assessing the energy efficiency and environmental impact of the nation’s truck fleet. Businesses

and others make use of these data in conducting market studies and evaluating market strategies;

assessing the utility and cost of certain types of equipment; calculating the longevity of products;

determining fuel demands; and linking to, and better utilizing, other data sets representing limited segments of the truck population.

COMPARABILITY WITH PREVIOUS SURVEYS

The results of the 2002 VIUS are comparable, in most instances, to the results of the 1997 VIUS

and prior Truck Inventory and Use Surveys (TIUS). Specific changes are as follows:

1

Due to difficulty in obtaining up-to-date vehicle registration records for New Hampshire, the sample was

drawn as of September 1, 2001, for this state.

Vehicle Inventory and Use Survey Introduction 1

U.S. Census Bureau, 2002 Economic Census
1. Business (formerly Major Use).

Changed—

• The kind of business was converted from a Standard Industrial Classification (SIC) basis to

a North American Industry Classification System (NAICS) basis. Even though category headings may appear similar, differences in the classification systems should be taken into

account for comparability purposes.

2. Body Type.

New—

• Categories that were added are: armored; concrete pumper; curtainside; mobile home

toter; street sweeper; vacuum; and van, other.

Changed—

• The station wagon category was collapsed into the sport utility category.

• The grain body category was collapsed into the open top van category.

• The platform with added devices category was collapsed into the flatbed, stake, or platform category.

• The category ‘‘Winch or crane’’ was changed to ‘‘Crane’’ (winch was added as a category to

the equipment type section).

Deleted—

• The oilfield truck and yard tractor categories were dropped.

3. Primary Jurisdiction (formerly Base of Operation).

Changed—

• Estimates were previously calculated for the percentage of miles traveled outside the baseof-operation state. For 2002 estimates are calculated based on jurisdictions in which the

vehicle traveled. Estimates of miles traveled in Canada, Mexico, and states other than the

home base state are also provided.

4. Months Operated (formerly Weeks Operated).

New—

• The ‘‘Vehicle not used’’ category was added.

Changed—

• Categories for time operated were changed from weekly intervals to monthly intervals.

5. Average Weight (Pounds).

Changed—

• The category ‘‘6,001 to 10,000’’ was split into ‘‘6,001 to 8,500’’ and ‘‘8,501 to 10,000.’’

6. Total Length (Feet).

New—

• Categories representing lengths of 45 feet up to 80 feet or more were added.

7. Vehicle Acquisition.

Deleted—

• The categories ‘‘Leased from someone else’’ and ‘‘Other’’ were dropped.

2 Introduction Vehicle Inventory and Use Survey

U.S. Census Bureau, 2002 Economic Census
8. Lease Characteristics.

New—

• Categories for the length of the leasing agreement were added.

• The category ‘‘Fuel contract’’ was added to the provisions of lease section.

Changed—

• The leased section includes a breakout between lessee and lessor.

• The categories ‘‘Leased with driver other than owner-operator’’ and ‘‘Leased with owneroperator’’ were collapsed into the category ‘‘Vehicle with driver.’’

Deleted—

• The categories ‘‘Maintenance on specific parts’’ and ‘‘Other’’ were dropped from the provisions of lease section.

9. Primary Operator Classification.

New—

• A section for source of hauls was added.

Changed—

• There is limited comparability for this section due to significant changes in the categories

and definitions.

Deleted—

• The section ‘‘For-hire jurisdiction’’ was dropped.

• The category ‘‘Exempt’’ was dropped from the type of carrier section.

10. Hazardous Materials Carried.

Deleted—

• All detailed hazardous material data lines were dropped except in Table 8 where distributed mileage appears.

11. Equipment Type.

New—

• Categories added to the equipment type section are: aerial work platform/bucket, air compressor, air springs, collision warning system, computerized drive train control unit, crane,

hoist, idle-reducing technology, internet access, lift gate, mounting bar for snowplow,

power take-off, toolbox, and winch.

• A section for transmission type was added.

Changed—

• The trip recorder or on-board computer category was broken out into categories distinguishing with or without communication capabilities.

• Categories for radial tires and road speed governor were moved from the fuel conservation

equipment section to the equipment type section.

• The front-wheel drive category was moved from the driving wheels section to the equipment type section.

Deleted—

• Categories for power steering and electronic vehicle management system were dropped.

Vehicle Inventory and Use Survey Introduction 3

U.S. Census Bureau, 2002 Economic Census
12. Fuel Type and Engine Size (formerly Engine Type and Size).

New—

• Respondents were permitted to report fuel combinations if used most often during the

year.

Changed—

• The ‘‘Liquefied gas or other’’ category has been broken out into categories for natural gas,

propane, alcohol fuels, electricity, and combination.

13. Refueling Location.

Changed—

• Response categories were changed significantly. No comparable 1997 data are available for

this section.

14. Maintenance.

Deleted—

• The category for component distributorship was dropped from the general maintenance

section.

15. Truck Type and Axle Arrangement.

New—

• The category ‘‘4 axles or more’’ for single-unit trucks and truck tractors without trailer was

broken out into ‘‘4 axles’’ and ‘‘5 axles or more.’’

• Sections for total liftable axles and locations and total liftable axles and number of braking

axles were added.

Changed—

• A truck-tractor, if not in operation, was grouped with the single-unit trucks.

• The subgroupings for single-unit truck with trailer and single-unit truck with utility trailer

were combined.

• The category ‘‘7 axles or more’’ for truck-tractors with double trailers was broken out into

‘‘7 axles’’ and ‘‘8 axles or more.’’

• The category ‘‘8 axles or more’’ for truck-tractors with triple trailers was broken out into ‘‘8

axles,’’ ‘‘9 axles,’’ and ‘‘10 axles or more.’’

Deleted—

• The category for trailer not specified was dropped.

16. Cab Type.

New—

• Categories for conventional cab or cab over engine with or without a sleeper were added.

Deleted—

• The category ‘‘Other’’ was dropped.

17. Additional Changes.

Not applicable. This category was added to some sections to make the detail lines add to

total.

4 Introduction Vehicle Inventory and Use Survey

U.S. Census Bureau, 2002 Economic Census
Primary products carried. Truck count detail lines for products carried were dropped from

all tables. Distributed mileage for products carried appears in Table 8. Product mileage does

not sum to 100 percent because multiple products may be carried at the same time. Products

carried, which somewhat followed the SIC system, are now based on the Standard Classification of Transported Goods (SCTG).

Truck fleet size. This section was dropped from all tables.

Fuel conservation equipment. This section was dropped from all tables.

The driving wheels section for pickups, panels, vans, sport utilities and station wagons

(4-wheel drive and 2-wheel drive) was dropped.

Table layout. The table layout for the 2002 state publication has changed significantly from

the table layout used for the 1997 state publication. Some of the changes include:

1. Table 2 is broken out into Tables 2a (trucks, truck miles, and average annual miles for all

trucks), 3a (trucks, truck miles, and average annual miles for trucks, excluding pickups,

minivans, other light vans, and sport utilities), 2b (measures of sampling variability for

Table 2a), and 3b (measures of sampling variability for Table 3a).

2. Tables 4, 5, 6, 7, and 8 are new:

a. Table 4 contains estimates of the number of trucks by vehicle size.

b. Table 5 contains estimates of the number of trucks by truck type.

c. Table 6 contains estimates of the number of miles traveled by vehicle size.

d. Table 7 provides estimates of the number of miles traveled by truck type.

e. Table 8 shows estimates of the number of truck miles distribution by operational characteristics.

EXPLANATION OF TERMS

Business. This item is based on the business or the part of the business in which the vehicle

was used. The 15 specific business use categories are self-explanatory and are roughly based on

NAICS sectors. Responses in the ‘‘Other’’ category were recoded, if possible, to one of the 15 specific business categories.

Body type. This item describes the type of body that is permanently attached to the power unit

(i.e., straight or single-unit truck). For truck-tractors, the body type is defined as the type of trailer

most often pulled.

Minivans. This body type category includes minivans that are manufactured on either a truck or

passenger car chassis.

Annual miles. This item represents the annual miles traveled. When a respondent had partialyear ownership of the vehicle, annual miles were adjusted to reflect miles traveled when not

owned by the respondent.

Vehicle size. This item is determined by the average vehicle weight (empty vehicle weight plus

cargo weight) during 2002. The four size classes are:

1. Light. The average vehicle weight is 10,000 pounds or less.

2. Medium. The average vehicle weight is 10,001 to 19,500 pounds.

3. Light-heavy. The average vehicle weight is 19,501 to 26,000 pounds.

4. Heavy-heavy. The average vehicle weight is 26,001 pounds or more.

Vehicle Inventory and Use Survey Introduction 5

U.S. Census Bureau, 2002 Economic Census
Primary operator classification. This item is defined as follows:

1. Personal transportation. This is a vehicle operated for personal use, such as travel to

work, carpooling, pleasure driving, etc.

2. Rental. This is a vehicle operated for daily or short-term rental.

3. Private. This is a vehicle operated to carry goods owned by the respondent, or for internal

company business.

4. Motor carrier. This is a vehicle operated by a company and hired to carry other people’s

goods.

5. Owner operator. This is a vehicle operated by an independent trucker hired to carry other

people’s goods.

Hazardous materials. This item identifies those trucks that transport hazardous materials in

quantities large enough to have a placard on the vehicle required by 49 CFR Part 172 Subpart F.

Truck miles distribution. Table 8 shows the distribution of annual miles by the actual percentage of use for selected activities of each truck. Mileage estimates presented in all other tables of

this report represent 100 percent of the individual truck’s mileage based on primary activity,

regardless of any secondary operational activities.

SAMPLE DESIGN

The sampling frame was constructed from files of truck registrations identified as being active as

of July 1, 2002.2 The frame was stratified by geography and truck characteristics. The 50 states

and the District of Columbia made up the 51 geographic strata. Body type and gross vehicle

weight (GVW) determined the following five truck strata: 1) pickups; 2) minivans, other light vans,

and sport utilities; 3) light single-unit trucks (GVW < 26,000 lb); 4) heavy single-unit trucks

(GVW ≥ 26,000 lb; and 5) truck-tractors. Therefore, the sampling frame was partitioned into 255

geographic-by-truck strata. Within each stratum, a simple random sample of truck registrations

was selected without replacement. This produced a total sample of 136,113 truck registrations.

Estimation

An estimate of the number of trucks for a particular state and truck characteristic was computed

in the following manner. Weighted estimates of the number of trucks having the characteristic of

interest were computed for each of the five truck strata. The weight for a given truck was the

product of two factors—the reciprocal of the truck’s probability of selection and a nonresponse

adjustment factor. (See the Nonsampling Error section for a description of the nonresponse

adjustment procedure.) The truck stratum estimates were summed to form a state-level estimate.

Two types of truck miles estimates are provided. Distributed truck miles estimates, as shown in

Table 8, were computed by apportioning each truck’s annual miles into the appropriate category

based on the percent of miles driven in the category as reported by the respondent. Truck miles

estimates presented in all other tables were computed by attributing 100 percent of an individual

truck’s annual miles to the category with the greatest reported percentage. For example, say a

particular truck was driven 50,000 miles in the survey year and the respondent indicated 80 percent of the trips were between 201 and 500 miles from the home base, while 20 percent of the

trips were between 101 and 200 miles from the home base. In Table 8, 40,000 miles would be

tabulated in the ’’201 to 500 miles’’ category and 10,000 miles would be tabulated in the ‘‘101 to

200 miles’’ category. In all other tables, 50,000 miles would be tabulated in the ‘‘201 to 500

miles’’ category. To compute an estimate of the average miles per truck, the total miles estimate

was divided by the number of trucks estimate for the characteristic of interest.

2

The sampling frame included trucks registered as of September 1, 2001, for New Hampshire.

6 Introduction Vehicle Inventory and Use Survey

U.S. Census Bureau, 2002 Economic Census
DATA COLLECTION

A questionnaire was mailed to the registered owner of each selected truck registration. This registrant was requested to provide data about the truck identified by the vehicle registration information imprinted on the questionnaire. The information provided by each respondent was subjected

to extensive computer edits. Questionable responses were reviewed and corrected when necessary.

RELIABILITY OF THE ESTIMATES

The total error of an estimate based on a sample survey is the difference between the estimate

and the population parameter that it estimates. This error may be considered to be comprised of

sampling error and nonsampling error. Sampling error is the difference between the estimate and

the result that would be obtained from a complete enumeration of the sampling frame conducted

under the same survey conditions. This error occurs because characteristics differ among sampling units and because only a subset of the entire population is measured in a sample survey.

Nonsampling error encompasses all other factors that contribute to the total error of a sample survey estimate. The accuracy of a survey result may be affected by these two types of errors.

Sampling and nonsampling errors are often measured by the quantities, bias and variance. The

bias of an estimator of a population parameter is the difference, averaged over all possible

samples of the same size and design, between the estimator and the population parameter being

estimated. (The population parameter is usually unknown.) Any systematic error, or inaccuracy

that affects all samples of a specified design in a similar way, may bias the resulting estimates.

The variance of an estimator is the squared difference, averaged over all possible samples of the

same size and design, between the estimator and its average value.

Measures of Sampling Variability

Because the estimates are based on a sample, exact agreement with the results that would be

obtained from a complete enumeration of the truck registrations on the sampling frame is not

expected. However, because each truck included on the sampling frame has a known probability

of being selected into the sample, it is possible to estimate the sampling variability of the survey

estimates.

The particular sample used in this survey is one of a large number of samples of the same size

that could have been selected using the same design. If all possible samples had been surveyed

under the same conditions, an estimate of the population parameter of interest could have been

obtained from each sample. These samples give rise to a distribution of estimates for the population parameter. A statistical measure of the variability among these estimates is the standard

error, which can be approximated from any one sample. The standard error is defined as the

square root of the variance. The coefficient of variation (or relative standard error) of an estimator

is the standard error of the estimator divided by the estimator. Note that measures of sampling

variability, such as the standard error and coefficient of variation, are estimated from the sample

and are also subject to sampling variability. (Technically, we should refer to the estimated standard error or the estimated coefficient of variation of an estimator. However, for the sake of brevity, we have omitted this detail.) It is important to note that the standard error and coefficient of

variation only measure sampling variability. They do not measure any systematic biases in the

estimates. The U.S. Census Bureau recommends that individuals using estimates contained in this

report incorporate this information into their analyses, as sampling error could affect the conclusions drawn from these estimates.

An estimate from a particular sample and the standard error associated with the estimate can be

used to construct a confidence interval. A confidence interval is a range about a given estimator

that has a specified probability of containing the result of a complete enumeration of the sampling

frame conducted under the same survey conditions. Associated with each interval is a percentage

of confidence, which is interpreted as follows. If, for each possible sample, an estimate of a population parameter and its approximate standard error were obtained, then:

Vehicle Inventory and Use Survey Introduction 7

U.S. Census Bureau, 2002 Economic Census
1. For approximately 90 percent of the possible samples, the interval from 1.645 standard errors

below to 1.645 standard errors above the estimate would include the population parameter as

obtained from a complete enumeration of the sampling frame conducted under the same survey conditions.

2. For approximately 95 percent of the possible samples, the interval from 1.96 standard errors

below to 1.96 standard errors above the estimate would include the population parameter as

obtained from a complete enumeration of the sampling frame conducted under the same survey conditions.

To illustrate the computation of a confidence interval for an estimate of the number of trucks,

assume that an estimate of trucks is 3,377.8 thousand and the coefficient of variation for this estimate is 2.9 percent, or 0.029. First obtain the standard error of the estimate by multiplying the

number of trucks estimate by its coefficient of variation. For this example, multiply 3,377.8 thousand by 0.029. This yields a standard error of 97.9562 thousand. The upper and lower bounds of

the 90-percent confidence interval are computed as 3,377.8 thousand plus or minus 1.645 times

97.9562 thousand. Consequently, the 90-percent confidence interval is 3,216.7 thousand to

3,538.9 thousand. If corresponding confidence intervals were constructed for all possible samples

of the same size and design, approximately 9 out of 10 (90 percent) of these intervals would contain the result obtained from a complete enumeration of all trucks on the sampling frame.

Nonsampling Error

Nonsampling error encompasses all other factors that contribute to the total error of a sample survey estimate and may also occur in censuses. It is often helpful to think of nonsampling error as

arising from deficiencies or mistakes at some point in the survey process. Nonsampling error can

be attributed to many sources: (1) inability to obtain information about all trucks in the sample,

(2) response errors, (3) differences in the interpretation of the questions, (4) mistakes in coding or

keying the data obtained, and (5) other errors of collection, response, coverage, and processing.

Although no direct measurement of the potential biases due to nonsampling error has been

obtained, precautionary steps were taken in all phases of the collection, processing, and tabulation of the data in an effort to minimize its influence.

A potential source of bias in the estimates is nonresponse. Nonresponse is defined as the failure

to obtain all the intended measurements or responses about all the trucks in the sample. Two

types of nonresponse are often distinguished. Unit nonresponse is used to describe the failure to

obtain any of the substantive measurements about a sampled truck. In most cases of unit nonresponse, the questionnaire was never returned to the Census Bureau after several attempts to elicit

a response. For the United States, approximately 76.9 percent of the questionnaires were returned

with substantive data. Item nonresponse occurs either when a question is unanswered or the

response to the question fails computer or analyst edits. The procedures used to account for unit

and item nonresponse are discussed below.

Unit nonresponse is handled in the estimation procedure by reweighting. To apply this method of

nonresponse adjustment, we make the assumption that the population of trucks can be divided

into a finite number of mutually exclusive adjustment cells so that within each cell, all the population elements possess similar characteristics and share a similar probability of responding, if

selected into the sample. The adjustment cells for the 2002 VIUS are identical to the sampling

strata. A nonresponse adjustment factor is computed for each adjustment cell and is equal to the

ratio of the number of truck registrations selected into the sample to the number of responses

received within each cell. In this sense, reweighting allocates characteristics to the nonrespondents in proportion to the characteristics observed for the respondents within each adjustment

cell. The amount of bias introduced by this nonresponse adjustment procedure depends on the

extent to which the nonrespondents differ, characteristically, from the respondents in each adjustment cell.

For item nonresponse, a missing value is replaced by a predicted value obtained from an appropriate model for nonresponse. This procedure is called imputation. To impute annual miles and lifetime miles, we divide the sample into a finite number of mutually exclusive cells based on state of

8 Introduction Vehicle Inventory and Use Survey

U.S. Census Bureau, 2002 Economic Census
registration, and related vehicle characteristics. For each cell, estimates of average annual miles

and average lifetime miles are computed based on those trucks in the cell for which annual miles

and lifetime miles have been reported. Missing values are then replaced with the appropriate average values. A slightly different imputation procedure is used to impute length and average weight

(empty weight plus cargo weight). For these data items, we replace a missing value with data

from a truck with similar characteristics for which length and average weight have been reported.

For all other data items, no imputation is performed. Instead, separate estimates are published in

a ‘‘Not reported’’ category. For example, a respondent who did not indicate the type of business in

which his/her truck was used would be included in the estimate for the ‘‘Not reported’’ category.

Users of the estimates should exercise caution when allocating the estimate for the ‘‘Not reported’’

category to the estimates for the reported categories in the proportions observed for the reported

categories. This is because the characteristics of the trucks for which we obtained information

may differ significantly from those trucks for which we obtained no information.

Unpublished Estimates

Additional statistics not shown in the tables are obtainable by tabulating records on a CD-ROM

containing the survey microdata. These additional estimates have not been included in this publication because of high sampling variability, poor response, or other factors that may make them

potentially misleading. It should be noted that some unpublished estimates can be derived

directly from this report by subtracting published estimates from their respective totals. However,

the estimates obtained by such subtraction would be subject to the poor response rates or high

sampling variability as previously described.

Individuals who use estimates in this report, or the CD-ROM microdata, to create estimates not

published by the Census Bureau should cite the Census Bureau as the source of only the published

estimates or the microdata used, and not as the source of the new estimates.

CONFIDENTIALITY AND DISCLOSURE

Title 13 of the United States Code authorizes the Census Bureau to conduct censuses and surveys.

Section 9 of the same Title requires that any information collected from the public under the

authority of Title 13 be maintained as confidential. Section 214 of Title 13 and Sections 3559 and

3571 of Title 18 of the United States Code provide for the imposition of penalties of up to five

years in prison and up to $250,000 in fines for wrongful disclosure of confidential census information. In accordance with Title 13, no estimates are published that would disclose the operations of an individual firm.

The Census Bureau’s internal Disclosure Review Board sets the confidentiality rules for all data

releases. A checklist approach is used to ensure that all potential risks to the confidentiality of the

data are considered and addressed.

A disclosure of data occurs when an individual can use published statistical information to identify either an individual or firm that has provided information under a pledge of confidentiality.

Disclosure limitation is the process used to protect the confidentiality of the survey data provided

by an individual or firm. Using disclosure limitation procedures, the Census Bureau modifies or

removes the characteristics that put confidential information at risk for disclosure. Although it

may appear that a table shows information about a specific individual or business, the Census

Bureau has taken steps to disguise or suppress the original data while making sure the results are

still useful. The techniques used by the Census Bureau to protect confidentiality in tabulations

vary, depending on the type of data.

SYMBOLS

The following symbols are used in this publication:

N Not available.

S Estimate does not meet publication standards because of high sampling variability or

poor response quality.

V Represents an estimate of less than 50 vehicles, 50,000 miles, or 0.05 percent.

Vehicle Inventory and Use Survey Introduction 9

U.S. Census Bureau, 2002 Economic Census
OK

1,190.0

AK

261.3

WA

1,808.8

OR

1,412.5

CA

8,840.1

HI

340.6

NV

618.1

MT

432.1

ID

580.7

WY

258.7

UT

677.9

AZ

1,383.9

ND

318.3

SD

307.3

NE

621.1

CO

1,609.0

NM

689.8

KS

967.3

TX

6,015.7

MN

1,571.4

MO

1,571.7

AR

944.5

LA

1,379.9

WI

1,794.5

IL

2,991.2

MI

3,442.2

KY

1,254.1

TN

1,924.7

MS

714.4 AL

1,621.3

GA

2,579.8

SC

1,105.9

OH

3,276.5

NC

2,292.6

VA

1,863.2

WV

621.4

PA

2,931.2

NY

3,346.7

ME

365.9

VT

227.2

NH 379.7

MA 1,448.1

RI 204.9

CT 750.9

NJ 1,975.5

DE 234.1

MD 1,306.2

DC 41.7

CA

405.5

HI

10.8

NV

28.4

MT

41.4

ID

85.7

WY

22.5

UT

45.1

ND

58.7

SD

39.3

NE

95.9

CO

68.4

NM

52.1

KS

111.8

TX

396.3

MN

127.0

IA

81.9

MO

167.8

LA

61.4

WI

113.1

IL

286.0

MI

139.1

IN

187.5

TN

105.8

MS

26.7 AL

99.4

GA

153.4

FL

182.1

SC

67.4

OH

222.8

NC

235.7

VA

120.7

WV

43.9

PA

157.5

NY

180.9

ME

24.1

VT

16.9

NH 23.5

MA 82.6

RI 11.8

CT 46.3

NJ 146.8

DE 14.5

MD 69.5

DC 0.9

OK

294.6

Figure 1. Light Truck Registrations: 2002

Figure 2. Medium and Heavy Truck Registrations: 2002

10 United States Vehicle Inventory and Use Survey

U.S. Census Bureau, 2002 Economic Census

(Thousands)

(Thousands)

AK

12.9

WA

114.3

OR

64.0

AZ

116.2

IA

1083.7

AR

52.4

KY

101.3

FL

4,147.2

IN

2,034.7
PROOF COPY

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Table A. State Registration Rankings: 2002 and 1997

[Estimates are based on data from the 2002 and 1997 Vehicle Inventory and Use Surveys. Because of rounding, estimates may not be additive]

State

2002 1997

Trucks (thousands) RankingTrucks (thousands) Ranking

United States85 174.8 X 72 800.3 X

Alabama1 720.7 *18 1 538.6 *16 Alaska274.2 47 248.4 47 Arizona1 500.1 *22 1 390.0 *22 Arkansas 996,9 31 899,2 31

California 9 245.6 1 8 818.8 1 Colorado 1 677.4 *20 1 422.0 *20

Connecticut 797.2 32 751.5 33 Delaware 248.6 48 206.3 48 District of Columbia 42.6 51 33.0 51 Florida 4 329.3 3 3 460.2 3 Georgia 2 733.2 9 2 258.4 9

Hawaii351.4 44 294.2 *45

Idaho666.4 *37 550.6 *37

Illinois 3 277.2 7 2 674.6 7

Indiana 2 222.2 11 1 852.5 13

Iowa 1 165.6 *29 979.3 30

Kansas 1 079.1 30 1 082.6 29

Kentucky 1 355.4 27 1 348.0 24

Louisiana 1 441.3 25 1 210.1 *26

Maine 390.0 42 377.6 42

Maryland 1 375.7 26 1 192.0 *27

Massachusetts 1 530.7 21 1 240.8 25

Michigan3 581.3 *4 2 734.5 6

Minnesota 1 698.4 *19 1 461.9 19

Mississippi 741.1 *34 813.0 32

Missouri 1 739.5 *17 1 626.7 *14

Montana473.5 40 417.2 *40

Nebraska 717.0 *36 639.7 35

Nevada646.5 39 539.7 38

New Hampshire 403.2 41 416.6 *41

New Jersey 2 122.3 12 1 514.3 *17

New Mexico741.9 *33 715.9 34

New York 3 527.6 *5 2 863.9 5

North Carolina2 528.3 10 1 996.1 10

North Dakota377.0 43 340.9 44

Ohio 3 499.3 *6 2 985.1 4

Oklahoma 1 484.6 *23 1 373.5 *23

Oregon 1 476.5 *24 1 411.7 *21

Pennsylvania3 088.7 8 2 605.9 8

Rhode Island216.7 50 190.7 *50

South Carolina 1 173.3 *28 1 140.7 28

South Dakota 346.6 45 361.5 43

Tennessee2 030.5 13 1 502.4 *18

Texas 6 412.0 2 4 410.6 2

Utah 723.0 *35 563.7 36

Vermont 244.1 49 194.5 *49

Virginia 1 983.9 14 1 891.6 *12

Washington 1 923.1 *15 1 903.5 *11

West Virginia665.3 *38 446.0 39

Wisconsin 1 907.6 *16 1 618.5 *15

Wyoming 281.2 46 291.3 *46

*Ranking is not statistically significant.

Note: The Introduction gives information on confidentiality protection, sampling error, nonsampling error, sample design, and definitions. Links to this information on the Internet may be found at

www.census.gov/svsd/www/02vehinv.html.

Vehicle Inventory and Use Survey United States 11
Table 1a. TrucksComparative Summary: 2002 and Earlier Years

[Estimates are shown as percents and are based on data from the 2002 and 1997 Vehicle Inventory and Use Surveys, and the 1992 and 1987 Truck Inventory and Use Surveys. Because of rounding,

estimates may not be additive]

Vehicular and operational characteristics 2002 1997 1992 1987

Total 100.0  100.0 100.0 100.0

BUSINESS1

Agriculture, forestry, fishing, or hunting 2.6  5.0 6.4 8.5

Mining .2  .3 .4 .5

Construction 5.3  8.3 8.4 10.0

Manufacturing .9  1.0 1.3 1.3

Wholesale and retail trade 2.7  4.8 5.2 5.6

Forhire transportation or warehousing 1.5  1.5 1.5 2.2

Utilities and all services 5.2  6.7 6.2 5.5

Personal transportation 76.7  70.0 68.3 65.7

Other, not reported, and not applicable 4.9  2.4 2.2 .6

BODY TYPE

Pickup, minivan, other light vans, and sport utility 93.5  92.2 91.4 89.0

Flatbed, stake, platform, and low boy 1.4  2.2 2.7 3.7

Van2  2.0 1.9 1.8 2.1

Service, utility .3  .2 .3 .3

Van, step, walkin, or multistop .5  .8 .7 1.1

Dump 1.0  .9 1.0 1.3

Tank for liquids, gases, or dry bulk .4  .4 .4 .5

Other and not applicable .9  1.4 1.6 1.9

VEHICLE SIZE

Light 93.6  93.5 93.2 91.9

Medium 2.2  2.0 2.1 2.3

Lightheavy 1.1  1.0 1.2 1.7

Heavyheavy 3.0  3.5 3.4 4.1

ANNUAL MILES

Less than 5,0003  18.8 17.9 20.8 25.3 5,000 to 9,999 20.1  18.5 20.7 23.4 10,000 to 19,999 43.9  41.2 38.3 34.5 20,000 to 29,999 11.0  14.0 12.7 10.7 30,000 or more 6.2  8.4 7.6 6.1

Vehicular and operational characteristics 2002 1997 1992 1987

MODEL YEAR

1 to 2 years old 14.7  14.5 14.9 17.2

3 to 4 years old 17.8  16.1 15.7 16.5

Over 4 years old 67.4  69.4 69.4 66.3

VEHICLE ACQUISITION

New 44.6  41.3 45.6 47.3

Used 48.6  52.0 51.4 50.1

Not reported4 6.8 6.7 3.1 2.6

TRUCK TYPE

Singleunit trucks5  96.3 96.6 96.5 96.3 2 axles 95.6  95.8 95.7 95.3 3 axles or more .7  .8 .9 1.0 Trailer/axles not specified V  NNN

Combinations 3.7  3.4 3.5 3.7 3 axles .7  .5 .6 .7 4 axles 1.4  1.1 1.2 1.2 5 axles or more 1.4  1.9 1.7 1.8 Trailer/axles not specified .2  VVV

RANGE OF OPERATION

50 miles or less 68.2  72.5 73.8 75.6

51 to 200 miles 11.2  17.0 15.0 14.8

201 miles or more 3.0  5.2 4.9 4.5

Offtheroad, not reported, and not applicable 17.6  5.3 6.3 5.1

FUEL TYPE

Gasoline 89.6  92.7 92.9 93.7 All other fuels 7.9  7.1 6.8 6.2 Other, not reported, and not applicable 2.4  .3 .3 .1

N Not available. S Estimate does not meet publication standards because of high sampling variability or poor response quality. V Represents an estimate of less than 50 vehicles, 50,000

miles, or 0.05 percent.

1Comparability of estimates may vary across survey years due to changes in category definitions.

2Includes open top trailers and all van except step, walkin, or multistop. 3Includes vehicles not in use.

4For survey years prior to 2002, this includes vehicles leased from someone else.

5Excludes trucktractors not in use.

Note: The Introduction gives information on confidentiality protection, sampling error, nonsampling error, sample design, and definitions. Links to this information on the Internet may be found at

www.census.gov/svsd/www/02vehinv.html.

Table 1b. TrucksComparative Summary for Trucks, Excluding Pickups, Minivans, Other Light

Vans, and Sport Utilities: 2002 and 1997

[Estimates are shown as percents and are based on data from the 2002 and 1997 Vehicle Inventory and Use Surveys. Because of rounding, estimates may not be additive]

Vehicular and operational characteristics 2002 1997

Total 100.0  100.0

BUSINESS1

Agriculture, forestry, fishing, or hunting 14.4  17.1

Mining 1.6 1.4

Construction 18.6  20.5

Manufacturing 4.1  4.6

Wholesale and retail trade 11.7  16.1

Forhire transportation or warehousing 18.5  16.6

Utilities and all services 14.2  14.1

Personal transportation .9  3.2 Other, not reported, and not applicable 16.1  6.5

BODY TYPE

Flatbed, stake, platform, and low boy 21.8  28.9

Van2  31.1 23.9

Service, utility 4.7  2.7

Van, step, walkin, or multistop 7.5  9.8

Dump  15.5 11.8

Tank for liquids, gases, or dry bulk 5.5  5.1

Other and not applicable 13.9  17.7

VEHICLE SIZE

Light  14.6 21.3 Medium 22.5  21.0 Lightheavy 16.0  12.9

Heavyheavy 46.9  44.8

ANNUAL MILES

Less than 5,0003  29.4 27.4 5,000 to 9,999 13.0  13.3 10,000 to 19,999 19.2  19.9 20,000 to 29,999 12.2  10.3 30,000 or more 26.3  29.0

Vehicular and operational characteristics 2002 1997

MODEL YEAR

1 to 2 years old 9.2  11.3 3 to 4 years old 15.5  12.9 Over 4 years old 75.4  75.8

VEHICLE ACQUISITION

New 45.4 41.0 Used  47.4 48.8 Not reported4 7.2 10.2

TRUCK TYPE

Singleunit trucks5  69.6 68.0 2 axles 59.1  57.7 3 axles or more 10.3  10.3 Trailer/axles not specified .1  N

Combinations 30.4  32.0

3 axles 2.1  2.2

4 axles 4.8  6.3

5 axles or more 20.9  23.5

Trailer/axles not specified 2.6  V

RANGE OF OPERATION

50 miles or less 53.3  52.5 51 to 200 miles 16.8  23.9 201 miles or more 9.5  15.1 Offtheroad, not reported, and not applicable 20.4  8.5

FUEL TYPE

Gasoline 29.9  38.0 All other fuels 65.9  59.6 Other, not reported, and not applicable 4.2  2.3

N Not available. S Estimate does not meet publication standards because of high sampling variability or poor response quality. V Represents an estimate of less than 50 vehicles, 50,000

miles, or 0.05 percent.

1Comparability of estimates may vary across survey years due to changes in category definitions.

2Includes open top trailers and all van except step, walkin, or multistop. 3Includes vehicles not in use.

4For survey years prior to 2002, this includes vehicles leased from someone else.

5Excludes trucktractors not in use.

Note: The Introduction gives information on confidentiality protection, sampling error, nonsampling error, sample design, and definitions. Links to this information on the Internet may be found at

www.census.gov/svsd/www/02vehinv.html.

12 United States Vehicle Inventory and Use Survey

U.S. Census Bureau, 2002 Economic Census
Table 2a. Trucks, Truck Miles, and Average Annual Miles for All Trucks: 2002 and 1997

[Estimates are based on data from the 2002 and 1997 Vehicle Inventory and Use Surveys. Because of rounding, estimates may not be additive]

Vehicular and operational characteristics 2002 trucks

(thousands)

1997 trucks

(thousands)

Percent

change

2002 truck miles (millions)1997 truck miles (millions)

Percent

change

2002 average

miles per truck (thousands)

1997 average

miles per truck (thousands)

Percent

change

ABCDE FGH I

Total 85 174.8  72 800.4 17.0 1 114 728.0 1 044 238.0 6.8 13.1 14.3 –8.8

BUSINESS1

Forhire transportation or warehousing 1 280.2  1 059.4 20.8 72 272.8 72 855.1 –.8 56.5 68.8 –17.9

Vehicle leasing or rental 859.2  539.2 59.3 20 024.6 13 724.4 45.9 23.3 25.5 –8.4

Agriculture, forestry, fishing, or hunting 2 239.9  3 654.5 –38.7 24 120.0 43 075.5 –44.0 10.8 11.8 –8.6

Mining 177.6  250.7 –29.1 3 411.5 4 679.3 –27.1 19.2 18.7 2.9

Utilities 679.3  663.8 2.3 10 244.7 9 437.7 8.6 15.1 14.2 6.1

Construction 4 541.5  6 034.0 –24.7 75 906.2 108 145.6 –29.8 16.7 17.9 –6.7

Manufacturing 782.9  729.4 7.3 15 384.5 16 966.2 –9.3 19.6 23.3 –15.5

Wholesale trade 735.9  1 264.6 –41.8 16 963.5 32 462.7 –47.7 23.1 25.7 –10.2

Retail trade 1 530.5  2 243.9 –31.8 27 470.5 40 274.0 –31.8 17.9 17.9 V

Information services 376.6  N N 5 622.0 N N 14.9 N N

Waste management, landscaping, or

administrative/support services 743.2  N N 10 709.3 N N 14.4 N N

Arts, entertainment, or recreation services 187.1  N N 1 784.1 N N 9.5 N N

Accommodation or food services 284.3  N N 5 816.3 N N 20.5 N N

Other services 2 127.3  N N 35 776.2 N N 16.8 N N

Personal transportation 65 343.0  50 934.5 28.3 766 639.8 631 346.6 21.4 11.7 12.4 –5.3

Not reported 1 308.2  V N 20 820.7 V N 15.9 V N

Not applicable2  1 978.0 1 193.1 65.8 1 761.4 236.0 646.3 .9 .2 350.1

BODY TYPE

Singleunit trucks 83 752.9  71 256.7 17.5 1 024 557.8 943 113.2 8.6 12.2 13.2 –7.6

Pickup 37 991.1  36 191.8 5.0 433 472.1 453 721.0 –4.5 11.4 12.5 –9.0

Minivan 12 207.3  9 837.9 24.1 161 288.1 146 899.6 9.8 13.2 14.9 –11.5

Other light vans 5 251.4  5 572.7 –5.8 59 958.7 71 414.5 –16.0 11.4 12.8 –10.9

Sport utility 24 204.4  15 533.1 55.8 314 836.7 214 836.2 46.5 13.0 13.8 –6.0

Armored 11.3  N N 293.8 N N 26.1 N N

Beverage 41.6  41.1 1.3 582.6 614.0 –5.1 14.0 14.9 –6.3

Concrete mixer 77.0  72.2 6.6 1 201.0 1 090.5 10.1 15.6 15.1 3.3

Concrete pumper 5.9  N N 105.4 N N 17.8 N N

Crane 17.6  52.1 –66.3 121.2 676.6 –82.1 6.9 13.0 –46.9 Curtainside 3.6  N N 69.5 N N 19.3 N N

Dump 727.0  574.4 26.6 7 244.1 6 864.6 5.5 10.0 12.0 –16.6 Flatbed, stake, or platform 948.1  1 250.7 –24.2 9 446.7 12 789.5 –26.1 10.0 10.2 –2.6 Low boy 3.6  26.1 –86.2 20.9 390.8 –94.6 5.8 15.0 –61.1 Pole, logging, pulpwood, or pipe 18.1  22.4 –19.2 391.1 481.0 –18.7 21.6 21.5 .7 Service, utility 262.1  151.3 73.2 3 214.6 1 653.9 94.4 12.3 10.9 12.2

Service, other 221.8  168.4 31.7 3 431.4 2 263.4 51.6 15.5 13.4 15.1

Street sweeper 6.4  N N 80.2 N N 12.6 N N

Tank, dry bulk 26.1  15.5 67.7 191.9 193.5 –.8 7.4 12.5 –40.9

Tank, liquids or gases 166.7  165.2 .9 2 152.1 2 559.0 –15.9 12.9 15.5 –16.6

Tow/Wrecker 127.8  111.7 14.4 2 056.7 1 734.9 18.6 16.1 15.5 3.6

Trash, garbage, or recycling 96.0  85.9 11.9 2 244.9 2 015.7 11.4 23.4 23.5 –.4

Vacuum 14.7  N N 224.1 N N 15.2 N N

Van, basic enclosed 583.1  399.2 46.0 11 271.0 9 170.3 22.9 19.3 23.0 –15.8

Van, insulated nonrefrigerated 18.9  10.4 81.7 335.1 228.1 46.9 17.7 21.9 –19.1

Van, insulated refrigerated 86.3  77.8 10.9 2 094.4 2 026.3 3.4 24.3 26.0 –6.8

Van, open top 151.7  244.2 –37.9 442.1 876.1 –49.5 2.9 3.6 –18.8

Van, step, walkin, or multistop 413.1  557.9 –26.0 6 835.6 9 257.2 –26.2 16.5 16.6 –.3

Van, other 69.0  N N 940.9 N N 13.6 N N

Other 1.1  NNSNNSN N

Trucktractors 1 421.9  1 543.8 –7.9 90 170.2 101 124.9 –10.8 63.4 65.5 –3.2

Automobile carrier 12.8  10.8 18.6 894.5 753.0 18.8 69.8 69.7 .1 Beverage 33.6  29.2 15.3 636.1 630.8 .8 18.9 21.6 –12.5 Curtainside 3.5  N N 272.1 N N 77.5 N N Dump 129.2  96.5 33.9 5 258.9 4 505.2 16.7 40.7 46.7 –12.8 Flatbed, stake, or platform 193.5  233.5 –17.1 9 576.0 13 264.8 –27.8 49.5 56.8 –12.9

Livestock 15.3  14.7 3.7 729.4 865.7 –15.7 47.7 58.8 –18.8

Low boy 57.7  85.0 –32.1 1 525.5 2 317.8 –34.2 26.5 27.3 –3.0

Mobile home toter 4.9  N N 136.0 N N 28.0 N N

Open top 64.0  75.6 –15.4 2 208.8 2 929.4 –24.6 34.5 38.7 –10.8

Pole, logging, pulpwood, or pipe 21.7  33.3 –34.8 1 106.9 1 677.8 –34.0 50.9 50.3 1.1

Tank, dry bulk 28.3  24.2 17.0 1 855.6 1 661.8 11.7 65.6 68.7 –4.5 Tank, liquids or gases 80.6  84.2 –4.3 5 565.1 6 046.0 –8.0 69.0 71.8 –3.8 Van, basic enclosed 592.6  609.7 –2.8 47 381.8 46 679.8 1.5 80.0 76.6 4.4 Van, dropframe 14.0  32.1 –56.4 917.1 1 856.6 –50.6 65.6 57.9 13.4 Van, insulated nonrefrigerated 14.9  24.1 –38.2 1 341.0 2 347.7 –42.9 90.1 97.4 –7.5

Van, insulated refrigerated 120.4  156.1 –22.9 10 742.1 14 336.7 –25.1 89.2 91.8 –2.9 Other 1.3  N N 23.1 N N 17.9 N N Not applicable3  33.7 NNSNNSN N

ANNUAL MILES

Less than 5,000 14 071.6  12 071.7 16.6 28 808.3 25 234.8 14.2 2.0 2.1 –2.1

5,000 to 9,999 17 093.3  13 465.5 26.9 121 794.6 93 905.8 29.7 7.1 7.0 2.2

10,000 to 19,999 37 362.8  29 974.6 24.6 494 022.3 399 709.8 23.6 13.2 13.3 –.8

20,000 to 29,999 9 349.8  10 198.5 –8.3 209 195.6 229 682.3 –8.9 22.4 22.5 –.7

30,000 to 49,999 3 662.6  4 349.9 –15.8 127 078.7 151 776.4 –16.3 34.7 34.9 –.6

50,000 to 74,999 961.5  951.3 1.1 55 029.7 54 517.7 .9 57.2 57.3 –.1

75,000 or more 695.2  815.5 –14.7 77 037.4 89 411.3 –13.8 110.8 109.6 1.1

Not applicable2  1 978.0 973.4 103.2 1 761.4 V N .9 V N

See footnotes at end of table.

Vehicle Inventory and Use Survey United States 13

U.S. Census Bureau, 2002 Economic Census
Table 2a. Trucks, Truck Miles, and Average Annual Miles for All Trucks: 2002 and 1997Con.

[Estimates are based on data from the 2002 and 1997 Vehicle Inventory and Use Surveys. Because of rounding, estimates may not be additive]

Vehicular and operational characteristics 2002 trucks

(thousands)

1997 trucks

(thousands)

Percent

change

2002 truck miles (millions)1997 truck miles (millions)

Percent

change

2002 average

miles per truck (thousands)

1997 average

miles per truck (thousands)

Percent

change

ABCDE FGH I

PRIMARY RANGE OF OPERATION

Offtheroad 1 040.8  2 852.8 –63.5 10 123.4 26 180.8 –61.3 9.7 9.2 6.0

50 miles or less 58 076.1  52 815.7 10.0 705 948.5 657 763.8 7.3 12.2 12.5 –2.4

51 to 100 miles 7 411.7  9 400.2 –21.2 120 933.5 172 749.2 –30.0 16.3 18.4 –11.2

101 to 200 miles 2 136.3  2 977.7 –28.3 42 499.6 68 171.9 –37.7 19.9 22.9 –13.1

201 to 500 miles 1 142.6  1 806.7 –36.8 32 482.5 53 373.5 –39.1 28.4 29.5 –3.8

501 miles or more 1 411.2  1 974.0 –28.5 42 015.3 65 998.7 –36.3 29.8 33.4 –11.0

Not reported 11 977.9  973.4 1 130.6 158 963.9 V N 13.3 V N

Not applicable2  1 978.0 N N 1 761.4 N N .9 N N

PRIMARY JURISDICTION

Operated in Canada 18.9  N N 313.5 N N 16.6 N N Operated in Mexico S  NNSNNSN N

Operated within the home base state 71 871.1  N N 930 033.4 N N 12.9 N N Operated in states other than the home base

state 1 902.8  N N 61 687.4 N N 32.4 N N Not reported 9 360.3  N N 119 815.4 N N 12.8 N N Not applicable2  1 978.0 N N 1 761.4 N N .9 N N

MONTHS OPERATED

12 59 689.6  N N 862 979.6 N N 14.5 N N

7 to 11 11 537.7  N N 157 537.0 N N 13.7 N N

2 to 6 9 585.8  N N 86 156.8 N N 9.0 N N

1 or less 2 383.7  N N 6 293.2 N N 2.6 N N

Vehicle not used 1 978.0  N N 1 761.4 N N .9 N N

VEHICLE SIZE

Light 79 759.6  68 100.0 17.1 969 104.3 896 362.1 8.1 12.2 13.2 –7.7

Medium 1 914.0  1 435.6 33.3 26 255.6 19 815.8 32.5 13.7 13.8 –.6

Lightheavy 910.3  729.3 24.8 11 765.7 10 129.4 16.2 12.9 13.9 –6.9

Heavyheavy 2 590.9  2 535.6 2.2 107 602.4 117 930.8 –8.8 41.5 46.5 –10.7

AVERAGE WEIGHT (POUNDS)

Less than 6,001 62 617.3  62 798.4 –.3 741 532.5 821 915.4 –9.8 11.8 13.1 –9.5 6,001 to 8,500 14 351.6  N N 188 475.9 N N 13.1 N N 8,501 to 10,000 2 790.7  N N 39 095.8 N N 14.0 N N 10,001 to 14,000 1 142.1  818.9 39.5 15 186.1 11 502.0 32.0 13.3 14.0 –5.3 14,001 to 16,000 395.9  315.9 25.3 5 908.3 3 951.4 49.5 14.9 12.5 19.3

16,001 to 19,500 376.1  300.8 25.0 5 161.2 4 362.4 18.3 13.7 14.5 –5.4

19,501 to 26,000 910.3  729.3 24.8 11 765.7 10 129.4 16.2 12.9 13.9 –6.9

26,001 to 33,000 436.8  427.7 2.1 5 845.4 7 092.5 –17.6 13.4 16.6 –19.3

33,001 to 40,000 228.8  256.7 –10.9 3 769.6 6 594.1 –42.8 16.5 25.7 –35.9

40,001 to 50,000 318.4  399.9 –20.4 6 697.6 13 078.2 –48.8 21.0 32.7 –35.7

50,001 to 60,000 326.6  311.4 4.9 8 950.4 12 652.6 –29.3 27.4 40.6 –32.5

60,001 to 80,000 1 178.7  1 069.8 10.2 77 489.4 74 723.6 3.7 65.7 69.9 –5.9

80,001 to 100,000 68.9  46.3 48.9 2 949.8 2 427.0 21.5 42.8 52.5 –18.4

100,001 to 130,000 26.4  17.9 47.1 1 571.1 1 051.0 49.5 59.6 58.6 1.6

130,001 or more 6.3  5.9 5.8 329.1 311.8 5.5 52.3 52.5 –.3

TOTAL LENGTH (FEET)

Less than 20.0 72 155.3  67 826.7 6.4 865 812.7 894 156.4 –3.2 12.0 13.2 –9.0

20.0 to 27.9 7 634.7  2 032.1 275.7 101 006.5 25 530.3 295.6 13.2 12.6 5.3

28.0 to 35.9 2 680.7  1 129.9 137.2 39 685.1 18 152.1 118.6 14.8 16.1 –7.8

36.0 to 40.9 866.4  174.5 396.6 13 676.0 3 203.7 326.9 15.8 18.4 –14.0

41.0 to 44.9 261.1  97.5 167.8 4 322.8 2 004.8 115.6 16.6 20.6 –19.5

45.0 to 49.9 241.7  96.0 151.8 5 118.2 2 656.6 92.7 21.2 27.7 –23.5

50.0 to 54.9 201.8  138.6 45.7 5 414.1 5 036.8 7.5 26.8 36.4 –26.2

55.0 to 59.9 233.0  336.7 –30.8 10 063.2 17 738.2 –43.3 43.2 52.7 –18.0

60.0 to 64.9 301.6  417.3 –27.7 17 561.5 28 469.3 –38.3 58.2 68.2 –14.7

65.0 to 69.9 273.3  303.8 –10.0 21 406.1 25 422.4 –15.8 78.3 83.7 –6.4

70.0 to 74.9 217.2  156.4 38.9 20 632.7 14 110.3 46.2 95.0 90.2 5.3

75.0 to 79.9 92.1  N N 8 955.8 N N 97.3 N N

80.0 or more 15.7  N N 1 073.3 N N 68.2 N N

MILES PER GALLON

Less than 5 481.4  582.4 –17.3 11 005.3 14 865.2 –26.0 22.9 25.5 –10.4

5 to 6.9 1 625.8  1 908.1 –14.8 69 007.1 85 015.4 –18.8 42.4 44.6 –4.7

7 to 8.9 1 364.3  1 391.1 –1.9 21 890.1 25 757.6 –15.0 16.0 18.5 –13.3

9 to 10.9 4 239.4  5 001.4 –15.2 46 779.4 56 385.7 –17.0 11.0 11.3 –2.1

11 to 12.9 6 047.0  8 207.2 –26.3 66 832.6 95 166.7 –29.8 11.1 11.6 –4.7

13 to 14.9 7 031.8  9 353.3 –24.8 89 499.0 118 154.9 –24.3 12.7 12.6 .8

15 or more 48 486.7  45 547.5 6.5 629 026.3 637 416.9 –1.3 13.0 14.0 –7.3

15 to 20.9 38 065.4  34 649.1 9.9 494 122.2 483 885.2 2.1 13.0 14.0 –7.0

21 to 24.9 6 623.6  8 529.2 –22.3 87 864.7 121 513.4 –27.7 13.3 14.2 –6.9

25 or more 3 797.7  2 369.2 60.3 47 039.4 32 018.3 46.9 12.4 13.5 –8.3 Not reported 13 920.3  809.4 1 619.8 178 926.9 11 475.6 1 459.2 12.9 14.2 –9.3 Not applicable2  1 978.0 N N 1 761.4 N N .9 N N

See footnotes at end of table.

14 United States Vehicle Inventory and Use Survey

U.S. Census Bureau, 2002 Economic Census
Table 2a. Trucks, Truck Miles, and Average Annual Miles for All Trucks: 2002 and 1997Con.

[Estimates are based on data from the 2002 and 1997 Vehicle Inventory and Use Surveys. Because of rounding, estimates may not be additive]

Vehicular and operational characteristics 2002 trucks

(thousands)

1997 trucks

(thousands)

Percent

change

2002 truck miles (millions)1997 truck miles (millions)

Percent

change

2002 average

miles per truck (thousands)

1997 average

miles per truck (thousands)

Percent

change

ABCDE FGH I

MODEL YEAR

2003 94.0  N N 2 605.9 N N 27.7 N N

2002 4 982.6  N N 76 980.1 N N 15.4 N N

2001 7 456.4  N N 126 047.8 N N 16.9 N N

2000 8 179.5  N N 141 768.8 N N 17.3 N N

1999 7 016.5  N N 119 130.6 N N 17.0 N N

1998 6 363.2  S S 102 522.3 S S 16.1 S S

1997 5 727.0  4 711.0 21.6 88 884.8 81 967.5 8.4 15.5 17.4 –10.8

1996 4 757.5  5 655.7 –15.9 70 503.7 108 760.2 –35.2 14.8 19.2 –22.9

1995 5 247.7  6 007.6 –12.6 71 863.6 119 211.8 –39.7 13.7 19.8 –31.0

1994 4 479.4  5 699.8 –21.4 58 481.2 102 192.1 –42.8 13.1 17.9 –27.2

1993 4 078.2  5 028.9 –18.9 46 451.2 87 956.5 –47.2 11.4 17.5 –34.9

Pre1993 26 792.8  45 504.5 –41.1 209 488.1 540 489.7 –61.2 7.8 11.9 –34.2

VEHICLE ACQUISITION

New 37 979.5  30 053.0 26.4 561 446.0 472 820.3 18.7 14.8 15.7 –6.0

Used 41 378.6  37 834.6 9.4 473 940.8 472 456.2 .3 11.5 12.5 –8.3

Not reported 5 816.7  4 912.9 18.4 79 341.2 98 961.5 –19.8 13.6 20.1 –32.3

LEASE CHARACTERISTICS

Leased 4 898.9  N N 100 995.2 N N 20.6 N N Lessee 3 871.4  N N 73 358.7 N N 18.9 N N Vehicle only 332.7  N N 16 667.3 N N 50.1 N N Vehicle with driver 19.5  N N 1 748.1 N N 89.4 N N Not reported 2.3  N N 82.6 N N 35.5 N N Not applicable4  3 516.8 N N 54 860.7 N N 15.6 N N Lessor 653.8  N N 22 281.4 N N 34.1 N N Vehicle only 267.3  N N 13 804.4 N N 51.6 N N Vehicle with driver 35.3  N N 2 657.2 N N 75.4 N N Not reported 3.3  N N 149.3 N N 45.7 N N Not applicable4  348.0 N N 5 670.6 N N 16.3 N N Not reported 373.6  N N 5 355.0 N N 14.3 N N Not leased 45 730.1  N N 591 796.8 N N 12.9 N N Not reported 34 545.8  N N 421 936.1 N N 12.2 N N

Length of leasing agreement: Leased 4 898.9  N N 100 995.2 N N 20.6 N N 1 to 11 months 43.0  N N 2 179.1 N N 50.6 N N 12 months or more 618.8  N N 33 027.8 N N 53.4 N N Not reported 13.7  N N 554.7 N N 40.4 N N Not applicable4  4 223.3 N N 65 233.5 N N 15.4 N N

Provisions of lease5:

Financing only 408.9  N N 20 602.6 N N 50.4 N N

Full maintenance 232.7  N N 11 813.0 N N 50.8 N N

Payment of taxes 267.1  N N 13 660.5 N N 51.1 N N

Obtaining licenses and permits 267.7  N N 14 408.6 N N 53.8 N N

Recordkeeping 148.0  N N 8 125.2 N N 54.9 N N

Fuel contract 72.4  N N 4 143.2 N N 57.2 N N

PRIMARY OPERATOR

CLASSIFICATION

Private 15 268.1  N N 239 426.5 N N 15.7 N N

Motor carrier 1 160.2  N N 62 059.9 N N 53.5 N N

Owner operator 545.7  N N 24 402.0 N N 44.7 N N

Rental 879.3  N N 20 434.0 N N 23.2 N N

Personal transportation 65 343.5  N N 766 644.3 N N 11.7 N N

Not applicable2  1 978.0 N N 1 761.4 N N .9 N N

Forhire characteristics:

Type of carrier:

Contract 602.4  N N 41 703.7 N N 69.2 N N

Common 536.4  N N 28 065.2 N N 52.3 N N

Not reported 193.3  N N 7 445.6 N N 38.5 N N

Not applicable6  83 842.7 N N 1 037 513.5 N N 12.4 N N

Type of service:

Truckload 792.6  579.8 36.7 55 846.8 46 815.7 19.3 70.5 80.7 –12.7

Lessthan truckload 350.1  283.2 23.6 14 289.3 16 472.1 –13.3 40.8 58.2 –29.8

Not reported 189.3  N N 7 078.0 N N 37.4 N N

Not applicable6  83 842.8 N N 1 037 513.9 N N 12.4 N N

Source of hauls:

Shippers or receivers 899.2  N N 57 610.6 N N 64.1 N N

Brokers 92.1  N N 6 501.9 N N 70.6 N N Centralized markets or exchanges 24.1  N N 1 042.7 N N 43.3 N N Other V  NNVNNVN N Not reported 316.7  N N 12 059.2 N N 38.1 N N Not applicable6  83 842.7 N N 1 037 513.5 N N 12.4 N N

HAZARDOUS MATERIALS CARRIED7

Carrying hazardous materials 366.1  403.3 –9.2 23 361.8 24 787.8 –5.8 63.8 61.5 3.8

Not carrying hazardous materials 3 873.5  4 436.3 –12.7 92 985.6 113 140.7 –17.8 24.0 25.5 –5.9

Not reported 681.1  1 214.2 –43.9 17 261.5 23 202.8 –25.6 25.3 19.1 32.6

Not applicable8  80 254.0 N N 981 119.1 N N 12.2 N N

EQUIPMENT TYPE5 9

Aerial work platform/bucket 166.0  N N 1 514.3 N N 9.1 N N

Air bag(s) (safety device only) 47 019.2  17 904.6 162.6 687 147.0 305 743.7 124.7 14.6 17.1 –14.4

Air compressor (except air brakes) 353.0  N N 15 299.2 N N 43.3 N N

Airconditioning 67 211.6  50 859.6 32.2 952 431.2 807 349.2 18.0 14.2 15.9 –10.7

Air springs 671.0  N N 45 806.8 N N 68.3 N N

See footnotes at end of table.

Vehicle Inventory and Use Survey United States 15

U.S. Census Bureau, 2002 Economic Census
Table 2a. Trucks, Truck Miles, and Average Annual Miles for All Trucks: 2002 and 1997Con.

[Estimates are based on data from the 2002 and 1997 Vehicle Inventory and Use Surveys. Because of rounding, estimates may not be additive]

Vehicular and operational characteristics 2002 trucks

(thousands)

1997 trucks

(thousands)

Percent

change

2002 truck miles (millions)1997 truck miles (millions)

Percent

change

2002 average

miles per truck (thousands)

1997 average

miles per truck (thousands)

Percent

change

ABCDE FGH I

EQUIPMENT TYPE5 9Con.

Antilock brake system 48 730.0  29 692.9 64.1 732 169.5 489 497.5 49.6 15.0 16.5 –8.9 Collision warning system 64.5  N N 2 553.2 N N 39.6 N N Computerized drive train control unit 10 060.8  N N 151 461.7 N N 15.1 N N Crane 107.4  N N 1 522.8 N N 14.2 N N Electronic vehicle identification device 146.0  147.9 –1.3 13 188.0 13 134.2 .4 90.3 88.8 1.7

Engine retarder/brake 951.5  831.5 14.4 58 553.7 55 246.9 6.0 61.5 66.4 –7.4 Frontwheel drive 32 354.1  13 474.8 140.1 405 069.9 190 644.1 112.5 12.5 14.1 –11.5 Hoist 619.4  N N 5 423.4 N N 8.8 N N Idlereducing technology (portable auxiliary pack,

electrification, etc.) 184.1  N N 12 561.3 N N 68.2 N N Internet access 15.6  N N 1 262.8 N N 81.2 N N

Lift gate 302.8  N N 5 364.5 N N 17.7 N N Mounting bar for snowplow 1 066.9  N N 11 441.3 N N 10.7 N N Navigational system 20.9  64.9 –67.8 1 628.2 5 769.0 –71.8 77.8 88.8 –12.4 Power takeoff 1 389.9  N N 26 861.0 N N 19.3 N N Radial tires 53 952.1  57 902.8 –6.8 734 855.7 866 739.3 –15.2 13.6 15.0 –9.0

Reflective material in addition to those required

by law 725.2  1 182.8 –38.7 24 333.9 50 556.7 –51.9 33.6 42.7 –21.5

Road speed governor 1 397.7  1 451.5 –3.7 66 666.2 71 639.0 –6.9 47.7 49.4 –3.4

Toolbox 8 386.8  N N 129 942.8 N N 15.5 N N

Trip recorder or onboard computer with

communication capabilities 3 305.5  N N 66 964.4 N N 20.3 N N

Trip recorder or onboard computer without

communication capabilities 13 338.8  N N 188 654.5 N N 14.1 N N

Vehicle control aids for handicapped drivers 153.4  134.8 13.8 1 540.0 2 400.8 –35.9 10.0 17.8 –43.6

Wheelchair lift 246.6  161.8 52.4 1 984.6 2 158.6 –8.1 8.0 13.3 –39.7

Winch 770.6  N N 9 266.1 N N 12.0 N N

Transmission type: Automatic 63 022.3  N N 800 969.4 N N 12.7 N N

Manual 18 186.6  N N 256 280.1 N N 14.1 N N

Semiautomated manual 104.5  N N 2 353.0 N N 22.5 N N

Automated manual 109.8  N N 1 995.9 N N 18.2 N N

Not reported 3 751.4  N N 53 129.7 N N 14.2 N N

Braking system:

Hydraulic (standard) 1 501.7  1 252.5 19.9 18 808.6 13 993.6 34.4 12.5 11.2 12.1 Hydraulic with power assist 1 189.1  1 453.7 –18.2 14 808.3 19 230.7 –23.0 12.5 13.2 –5.9 Air 2 307.3  2 457.4 –6.1 96 707.6 112 646.0 –14.1 41.9 45.8 –8.6 Other V  78.7 N V 1 018.1 N V 12.9 N Not reported 522.4  N N 14 847.9 N N 28.4 N N Not applicable10  79 654.3 N N 969 555.5 N N 12.2 N N

FUEL TYPE AND ENGINE SIZE

Fuel type:

Gasoline 76 334.6  67 452.7 13.2 936 146.5 876 746.7 6.8 12.3 13.0 –5.6

Diesel 6 125.4  4 913.4 24.7 167 407.2 162 994.7 2.7 27.3 33.2 –17.6

Natural gas 74.8  N N 979.0 N N 13.1 N N

Propane 48.3  N N 575.9 N N 11.9 N N

Alcohol fuels 141.1  N N 1 560.2 N N 11.1 N N

Electricity S  NNSNNSN N

Combination 379.2  N N 5 080.3 N N 13.4 N N Other V  NNVNNVN N Not reported 93.3  N N 1 217.5 N N 13.1 N N

Not applicable2  1 978.0 N N 1 761.4 N N .9 N N

Cylinders11:

4 cylinders 11 338.9  11 040.5 2.7 127 973.3 147 961.6 –13.5 11.3 13.4 –15.8

6 cylinders 40 872.7  32 365.4 26.3 596 047.2 543 950.9 9.6 14.6 16.8 –13.2

8 cylinders 31 489.9  27 067.2 16.3 379 361.3 335 182.4 13.2 12.0 12.4 –2.7

Other 1 473.3  2 327.3 –36.7 11 346.1 17 143.1 –33.8 7.7 7.4 4.6

Cubic inch displacement11:

Gasoline fuel 76 334.6  67 452.7 13.2 936 146.5 876 746.7 6.8 12.3 13.0 –5.6

Less than 200 19 844.1  20 016.8 –.9 233 334.4 271 229.2 –14.0 11.8 13.6 –13.2

200 to 299 28 727.0  17 628.6 63.0 388 620.3 259 373.6 49.8 13.5 14.7 –8.1

300 to 349 12 502.9  11 834.5 5.6 149 604.2 148 763.9 .6 12.0 12.6 –4.8

350 to 399 11 503.0  12 959.6 –11.2 133 757.0 160 697.7 –16.8 11.6 12.4 –6.2

400 or more 2 452.6  2 211.3 10.9 24 900.5 23 020.9 8.2 10.2 10.4 –2.5

Not available 1 305.0  2 802.0 –53.4 5 930.3 13 661.5 –56.6 4.5 4.9 –6.8

Diesel fuel 6 125.4  4 913.4 24.7 167 407.2 162 994.7 2.7 27.3 33.2 –17.6

Less than 400 1 498.8  1 283.3 16.8 21 974.7 22 297.0 –1.4 14.7 17.4 –15.6

400 to 599 2 703.3  1 570.8 72.1 46 852.3 30 963.3 51.3 17.3 19.7 –12.1

600 to 799 920.8  759.9 21.2 52 169.5 44 584.2 17.0 56.7 58.7 –3.4 800 or more 629.6  742.8 –15.2 32 836.0 48 060.0 –31.7 52.2 64.7 –19.4 Not available 372.9  556.5 –33.0 13 574.6 17 090.2 –20.6 36.4 30.7 18.5 Other fuel 643.5  241.1 166.9 8 195.4 2 791.3 193.6 12.7 11.6 10.0 Less than 400 587.8  178.8 228.8 7 586.4 1 999.4 279.4 12.9 11.2 15.4 400 or more 46.9  36.5 28.7 580.1 708.7 –18.1 12.4 19.4 –36.4 Not available 8.8  25.9 –66.0 28.9 83.2 –65.2 3.3 3.2 2.3 Not reported 93.3  N N 1 217.5 N N 13.1 N N Not applicable2  1 978.0 N N 1 761.4 N N .9 N N

REFUELING LOCATION

Gas station 74 469.5  N N 929 925.6 N N 12.5 N N

Truck stop 1 427.5  N N 62 738.0 N N 44.0 N N

Own facility (including home, farm, ranch, onsite

by mobile supplier, etc.) 2 941.7  N N 60 383.5 N N 20.5 N N

Other company’s/contractor’s facility not open to

the public 401.6  N N 8 667.2 N N 21.6 N N

Other 37.2  N N 421.6 N N 11.3 N N

Not reported 3 919.4  N N 50 830.8 N N 13.0 N N

Not applicable2  1 978.0 N N 1 761.4 N N .9 N N

See footnotes at end of table.

16 United States Vehicle Inventory and Use Survey

U.S. Census Bureau, 2002 Economic Census
Table 2a. Trucks, Truck Miles, and Average Annual Miles for All Trucks: 2002 and 1997Con.

[Estimates are based on data from the 2002 and 1997 Vehicle Inventory and Use Surveys. Because of rounding, estimates may not be additive]

Vehicular and operational characteristics 2002 trucks

(thousands)

1997 trucks

(thousands)

Percent

change

2002 truck miles (millions)1997 truck miles (millions)

Percent

change

2002 average

miles per truck (thousands)

1997 average

miles per truck (thousands)

Percent

change

ABCDE FGH I

MAINTENANCE5

General maintenance performed by:

None performed 1 931.2  791.2 144.1 15 079.6 8 469.8 78.0 7.8 10.7 –27.1

Companyowned maintenance facility 7 079.0  5 012.3 41.2 154 498.0 126 893.4 21.8 21.8 25.3 –13.8

General repair business or private mechanic 35 240.8  25 368.6 38.9 496 550.5 375 862.6 32.1 14.1 14.8 –4.9

Dealership service department 20 763.5  16 051.8 29.4 298 912.2 244 182.4 22.4 14.4 15.2 –5.4

Leasing company 178.8  402.7 –55.6 4 464.6 10 966.1 –59.3 25.0 27.2 –8.3

Individual not employed/paid by any

maintenance type facility 29 909.6  35 010.0 –14.6 346 395.8 450 496.8 –23.1 11.6 12.9 –10.0

Other V  583.7 N V 8 168.6 N V 14.0 N

Not reported 4 118.5  3 195.4 28.9 54 245.1 44 791.5 21.1 13.2 14.0 –6.0

Not applicable2  1 978.0 N N 1 761.4 N N .9 N N

Extensive repairs performed by:

None performed 65 555.5  3 945.5 1 561.5 858 631.1 51 607.1 1 563.8 13.1 13.1 .1

Companyowned maintenance facility 1 055.5  2 370.4 –55.5 22 141.2 58 768.1 –62.3 21.0 24.8 –15.4

General repair business or private mechanic 5 782.8  14 105.0 –59.0 86 267.8 204 013.3 –57.7 14.9 14.5 3.1

Dealership service department 3 587.7  10 178.8 –64.8 61 277.4 181 013.8 –66.1 17.1 17.8 –4.0

Leasing company 37.7  236.3 –84.0 987.0 6 646.1 –85.1 26.2 28.1 –7.0

Component distributorship (engine,

transmission, body, etc.) 309.1  1 504.6 –79.5 6 180.9 34 203.7 –81.9 20.0 22.7 –12.0

Individual not employed/paid by any repair type

facility 3 573.3  6 305.1 –43.3 38 970.3 66 913.4 –41.8 10.9 10.6 2.8

Other V  304.9 N V 4 143.2 N V 13.6 N

Not reported 190.2  36 608.3 –99.5 2 679.6 491 078.4 –99.5 14.1 13.4 5.0

Not applicable2  1 978.0 N N 1 761.4 N N .9 N N

TRUCK TYPE AND AXLE

ARRANGEMENT

Singleunit trucks and trucktractors without

trailer 82 084.0  70 312.4 16.7 1 002 652.1 929 380.5 7.9 12.2 13.2 –7.6

2 axles 81 476.2  69 726.2 16.9 992 916.9 919 233.9 8.0 12.2 13.2 –7.6

3 axles 467.7  475.0 –1.5 6 784.7 7 186.9 –5.6 14.5 15.1 –4.1

4 axles 102.0  111.2 –8.3 2 303.5 2 959.7 –22.2 22.6 26.6 –15.1

5 axles or more 22.3  N N 547.4 N N 24.5 N N

Not reported 15.8  V N 99.6 V N 6.3 V N

Combinations 3 090.8  2 488.0 24.2 112 075.9 114 857.5 –2.4 36.3 46.2 –21.5

Singleunit trucks with trailer 1 702.5  944.3 80.3 21 905.7 13 732.7 59.5 12.9 14.5 –11.5

3 axles 522.8  288.9 80.9 6 550.0 4 129.7 58.6 12.5 14.3 –12.3 4 axles 1 039.1  558.9 85.9 12 549.8 7 191.3 74.5 12.1 12.9 –6.1

5 axles or more 95.7  96.4 –.7 2 103.8 2 411.6 –12.8 22.0 25.0 –12.1

Not reported 44.9  N N 702.0 N N 15.6 N N

Trucktractors with single trailer 1 320.1  1 438.2 –8.2 84 307.7 92 221.6 –8.6 63.9 64.1 –.4

3 axles 61.3  78.0 –21.4 1 404.5 2 183.2 –35.7 22.9 28.0 –18.1

4 axles 127.9  211.7 –39.6 4 594.3 8 808.8 –47.8 35.9 41.6 –13.6

5 axles or more 1 034.5  1 148.5 –9.9 73 112.2 81 229.5 –10.0 70.7 70.7 –.1

Not reported 96.4  N N 5 196.7 N N 53.9 N N

Trucktractors with double trailers 66.6  101.0 –34.0 5 617.4 8 466.7 –33.7 84.3 83.8 .6

5 axles 38.9  56.3 –30.9 3 558.0 4 730.3 –24.8 91.5 84.1 8.9 6 axles 10.8  24.0 –55.2 934.7 2 239.3 –58.3 86.9 93.3 –6.8 7 axles 5.3  11.0 –52.1 313.5 787.9 –60.2 59.6 71.7 –16.9 8 axles or more 9.5  9.8 –3.0 664.9 709.2 –6.3 70.2 72.6 –3.4 Not reported 2.3  N N 146.3 N N 64.8 N N Trucktractors with triple trailers 1.5  4.5 –65.6 245.1 436.6 –43.9 158.6 97.1 63.3 7 axles 1.2  S S 220.1 S S 189.4 S S

8 axles S  3.0 S S 302.6 S S 99.9 S

9 axles S  1.2 S S 111.7 S S 95.1 S

10 axles or more S  SSSSSSS S

Not reported S  NNSNNSN N

Driving axles: 1 50 863.9  46 828.7 8.6 617 333.0 625 512.9 –1.3 12.1 13.4 –9.1

2 34 261.6  25 909.8 32.2 496 730.2 415 145.3 19.7 14.5 16.0 –9.5

3 or more 22.8  62.0 –63.3 376.0 3 579.8 –89.5 16.5 57.8 –71.4

Not reported 26.5  V N 288.8 V N 10.9 V N

Total liftable axles and locations12:

None 5 292.6  1 998.7 164.8 139 553.4 58 899.8 136.9 26.4 29.5 –10.5

1 175.0  140.3 24.8 4 451.5 3 651.4 21.9 25.4 26.0 –2.3

Forward of the drive axle 103.7  N N 2 976.9 N N 28.7 N N

Below the chassis 30.6  N N 588.4 N N 19.2 N N

Beyond the chassis 14.1  N N 234.1 N N 16.6 N N

Not reported 26.6  N N 652.2 N N 24.5 N N

2 or more 25.2  34.4 –26.7 651.5 774.6 –15.9 25.9 22.5 14.7

Forward of the drive axle 21.6  N N 527.8 N N 24.5 N N

Below the chassis 9.4  N N 235.6 N N 24.9 N N

Beyond the chassis 6.9  N N 129.6 N N 18.8 N N

Not reported 1.2  N N 32.7 N N 28.1 N N

Not reported 27.7  N N 516.2 N N 18.6 N N

Not applicable10  79 654.3 N N 969 555.5 N N 12.2 N N

Total liftable axles and number of braking axles:

None 5 292.6  1 998.7 164.8 139 553.4 58 899.8 136.9 26.4 29.5 –10.5

1 175.0  140.3 24.8 4 451.5 3 651.4 21.9 25.4 26.0 –2.3

0 braking 25.3  N N 576.7 N N 22.8 N N

1 braking 140.5  N N 3 687.4 N N 26.2 N N

Not reported 9.2  N N 187.4 N N 20.3 N N

2 or more 25.2  34.4 –26.7 651.5 774.6 –15.9 25.9 22.5 14.7

0 braking .9  N N 18.9 N N 21.6 N N

1 braking .9  N N 26.0 N N 27.8 N N

2 or more braking 22.6  N N 583.4 N N 25.8 N N

Not reported .8  N N 23.1 N N 29.6 N N

Not reported 27.7  N N 516.2 N N 18.6 N N

Not applicable10  79 654.3 N N 969 555.5 N N 12.2 N N

See footnotes at end of table.

Vehicle Inventory and Use Survey United States 17

U.S. Census Bureau, 2002 Economic Census
Table 2a. Trucks, Truck Miles, and Average Annual Miles for All Trucks: 2002 and 1997Con.

[Estimates are based on data from the 2002 and 1997 Vehicle Inventory and Use Surveys. Because of rounding, estimates may not be additive]

Vehicular and operational characteristics 2002 trucks

(thousands)

1997 trucks

(thousands)

Percent

change

2002 truck miles (millions)1997 truck miles (millions)

Percent

change

2002 average

miles per truck (thousands)

1997 average

miles per truck (thousands)

Percent

change

ABCDE FGH I

CAB TYPE

Conventional cab 4 878.7  4 240.5 15.1 127 623.2 124 168.8 2.8 26.2 29.3 –10.7

With sleeper 568.6  N N 49 177.6 N N 86.5 N N

Without sleeper 4 220.0  N N 72 741.0 N N 17.2 N N

Not reported 90.2  N N 5 704.7 N N 63.2 N N

Cab over engine 603.7  705.8 –14.5 17 088.5 19 006.7 –10.1 28.3 26.9 5.1

With sleeper 109.0  N N 7 042.5 N N 64.6 N N

Without sleeper 479.6  N N 8 994.1 N N 18.8 N N

Not reported 15.1  N N 1 051.9 N N 69.7 N N

Cab forward of engine 17.4  181.5 –90.4 284.3 3 335.9 –91.5 16.3 18.4 –11.1

Cab beside engine 9.3  37.6 –75.2 101.0 531.5 –81.0 10.9 14.2 –23.3

Not reported 11.4  N N 75.4 N N 6.6 N N

Not applicable10  79 654.3 N N 969 555.5 N N 12.2 N N

N Not available. S Estimate does not meet publication standards because of high sampling variability or poor response quality. V Represents an estimate of less than 50 vehicles, 50,000

miles, or 0.05 percent.

1Comparability of estimates may vary across survey years due to changes in category definitions.

2Vehicles not in use. When the respondent had partialyear ownership of the vehicle, annual miles were adjusted to reflect miles traveled when not owned by the respondent. 3Trucktractors not in use. 4Lessees or lessors of pickups, minivans, other light vans, and sport utilities.

5Detail lines do not add to total because items were not applicable or multiple responses were possible.

6Includes pickups, minivans, other light vans, and sport utilities; all other vehicles that are private, rental, or used for personal transportation; and vehicles not in use. 7Distributed miles data are available in Table 8.

8Includes pickups, minivans, other light vans, and sport utilities; all other vehicles that are rental or used for personal transportation; and vehicles not in use. 9Pickups, minivans, other light vans, and sport utilites, in the Equipment Type section, were only required to report for aerial work platform/bucket, air bag(s), airconditioning, antilock brake

system, computerized drive train control unit, frontwheel drive, mounting bar for snowplow, radial tires, toolbox, trip recorder, vehicle control aids for handicapped drivers, wheelchair lift, and winch. 10Pickups, minivans, other light vans, and sport utilities. 11Data were derived from administrative records. 12Detail lines do not add to the subtotal line because items were not applicable or multiple responses were possible. When 2 or 3 liftable axles were indicated, respondents properly reported

multiple responses, therefore detail lines will be significantly greater than the corresponding subtotal line.

Note: Use caution when assessing the true increase or decrease in any particular data line. Large changes in the "not reported" or "not applicable" estimates should be taken into account.

Note: Table 2b provides estimated measures of sampling variability. The Introduction gives information on confidentiality protection, sampling error, nonsampling error, sample design, and

definitions. Links to this information on the Internet may be found at www.census.gov/svsd/www/02vehinv.html.

18 United States Vehicle Inventory and Use Survey

U.S. Census Bureau, 2002 Economic Census
Table 2b. Trucks, Truck Miles, and Average Annual Miles for All TrucksMeasures of Sampling

Variability: 2002 and 1997

[Estimates are shown as percents and are based on data from the 2002 and 1997 Vehicle Inventory and Use Surveys. Columns A, B, D, E, G, H show estimated coefficients of variation. Columns C, F,

and I show estimated standard errors]

Vehicular and operational characteristics

2002

trucks

1997

trucks

Percent

change

2002 truck

miles

1997 truck

miles

Percent

change

2002 average

miles per

truck

1997 average

miles per

truck

Percent

change

ABCDE FGH I

Total .2  .2 .3 .6 .6 .9 .6 .6 .7

BUSINESS

Forhire transportation or warehousing 3.4  2.4 5.0 2.2 1.4 2.6 2.2 1.8 2.3 Vehicle leasing or rental 7.8  8.2 18.0 6.3 7.6 14.4 3.5 2.7 4.0 Agriculture, forestry, fishing, or hunting 3.7  2.7 2.8 5.8 3.5 3.8 3.8 2.4 4.2 Mining 11.4  11.1 11.3 10.6 10.0 10.7 5.8 9.3 11.3 Utilities 8.3  8.0 11.7 9.3 8.5 13.7 5.5 4.6 7.6

Construction 3.3  2.5 3.1 4.2 3.3 3.7 2.3 1.8 2.7 Manufacturing 8.5  5.4 10.8 9.2 5.2 9.6 5.2 3.6 5.3 Wholesale trade 7.5  5.0 5.2 8.0 4.7 4.9 5.2 2.5 5.2 Retail trade 5.7  4.4 4.9 5.3 4.5 4.8 3.2 2.5 4.0 Information services 14.2  N N 16.7 N N 9.3 N N

Waste management, landscaping, or

administrative/support services 7.7  N N 8.5 N N 5.0 N N Arts, entertainment, or recreation services 17.6  N N 19.8 N N 13.3 N N Accommodation or food services 12.8  N N 11.8 N N 6.4 N N Other services 5.3  N N 6.6 N N 3.6 N N Personal transportation .5  .5 .9 .8 .9 1.5 .7 .7 1.0 Not reported 6.6  N N 7.3 N N 4.8 N N Not applicable1  5.7 6.5 14.2 13.8 14.7 150.4 13.3 15.0 90.1

BODY TYPE

Singleunit trucks .2  .2 .3 .7 .7 1.0 .6 .6 .8

Pickup .3  .3 .5 1.1 1.1 1.5 1.1 1.0 1.4

Minivan 2.0  1.9 3.4 2.5 2.3 3.7 1.6 1.3 1.8

Other light vans 3.3  2.7 4.0 4.6 3.6 4.9 3.1 2.5 3.5

Sport utility 1.1  1.3 2.7 1.5 1.7 3.3 1.0 1.1 1.4

Armored 38.4  N N 33.6 N N 9.5 N N

Beverage 7.1  9.5 12.0 7.8 10.5 12.4 4.2 5.9 6.8

Concrete mixer 3.2  3.4 5.0 4.2 3.9 6.3 2.5 1.9 3.2

Concrete pumper 12.8  N N 19.1 N N 12.1 N N

Crane 9.5  6.1 3.8 16.7 7.7 3.3 13.2 7.0 7.9

Curtainside 15.8  N N 19.8 N N 13.9 N N

Dump 1.5  1.8 2.9 2.2 2.3 3.4 1.9 2.0 2.3

Flatbed, stake, or platform 1.5  1.4 1.5 2.4 2.3 2.5 2.1 1.9 2.7

Low boy 18.6  8.8 2.8 26.9 13.5 1.6 21.6 9.1 9.1

Pole, logging, pulpwood, or pipe 6.5  7.3 7.9 8.8 10.1 10.9 7.4 7.6 10.7

Service, utility 2.8  4.2 8.7 4.2 5.5 13.4 2.9 3.5 5.1

Service, other 3.1  4.5 7.2 4.2 5.2 10.2 2.8 3.8 5.4 Street sweeper 16.0  N N 15.5 N N 12.3 N N Tank, dry bulk 6.6  9.7 19.7 12.3 12.5 17.5 10.6 9.8 8.6 Tank, liquids or gases 3.0  3.4 4.6 4.4 5.2 5.7 3.3 4.0 4.3 Tow/Wrecker 4.8  5.1 8.0 7.2 7.0 11.9 6.0 5.5 8.4

Trash, garbage, or recycling 3.3  4.2 5.9 4.2 5.1 7.3 2.7 3.7 4.6 Vacuum 8.9  N N 11.9 N N 7.9 N N Van, basic enclosed 2.0  2.4 4.6 4.5 3.3 6.9 3.2 2.3 3.3 Van, insulated nonrefrigerated 9.7  16.6 35.0 13.4 17.5 32.5 10.6 13.8 14.1 Van, insulated refrigerated 4.8  5.6 8.2 5.9 6.6 9.1 3.1 3.9 4.7

Van, open top 2.6  2.4 2.2 6.2 5.6 4.2 5.5 5.2 6.1 Van, step, walkin, or multistop 4.2  2.5 3.6 6.4 3.3 5.3 2.8 2.1 3.6 Van, other 5.5  N N 7.6 N N 5.0 N N Other 33.1  NNSNNSN N

Trucktractors .5  .5 .7 .8 .7 .9 .7 .6 .8 Automobile carrier 9.7  9.8 16.4 11.1 10.7 18.3 5.5 6.0 8.2 Beverage 6.7  7.8 11.9 8.2 9.6 12.8 5.7 4.7 6.4 Curtainside 16.1  N N 18.5 N N 10.7 N N Dump 2.6  3.2 5.5 3.8 3.7 6.2 2.5 2.3 2.9 Flatbed, stake, or platform 2.3  2.0 2.5 3.1 2.3 2.8 2.0 1.5 2.2

Livestock 8.7  7.3 11.7 10.1 8.6 11.2 6.9 5.8 7.4 Low boy 3.8  3.3 3.4 6.5 5.7 5.7 4.9 4.6 6.5 Mobile home toter 13.5  N N 22.3 N N 17.1 N N Open top 3.2  3.2 3.8 5.5 4.6 5.4 4.0 3.3 4.6 Pole, logging, pulpwood, or pipe 5.5  4.9 4.8 7.4 5.5 6.1 4.2 3.4 5.5

Tank, dry bulk 6.1  6.5 10.4 7.8 7.2 11.9 4.5 3.5 5.4

Tank, liquids or gases 3.7  3.3 4.7 4.4 3.8 5.4 2.3 2.1 2.9

Van, basic enclosed 1.2  1.2 1.6 1.4 1.3 2.0 .9 .8 1.3

Van, dropframe 9.8  5.4 4.9 13.1 6.8 7.3 8.7 4.0 10.9

Van, insulated nonrefrigerated 7.7  5.6 5.9 8.4 5.5 5.7 4.3 2.6 4.6

Van, insulated refrigerated 2.9  2.5 3.0 3.4 2.6 3.2 1.6 1.4 2.1

Other 22.0  N N 27.2 N N 25.7 N N

Not applicable2  5.8 NNSNNSN N

ANNUAL MILES

Less than 5,000 1.8  1.7 2.9 2.2 2.2 3.6 1.3 1.2 1.7

5,000 to 9,999 1.7  1.7 3.0 1.8 1.7 3.2 .4 .4 .6

10,000 to 19,999 1.0  1.0 1.7 1.0 1.0 1.8 .3 .3 .4

20,000 to 29,999 2.5  2.0 2.9 2.5 2.0 2.9 .3 .3 .4

30,000 to 49,999 3.8  3.2 4.2 3.9 3.2 4.2 .5 .5 .7

50,000 to 74,999 6.5  5.6 8.6 6.4 5.4 8.5 .9 .7 1.1

75,000 or more 3.1  3.0 3.7 2.8 2.8 3.4 .6 .6 .9

Not applicable1  5.7 7.6 19.3 13.8 N N 13.3 N N

See footnotes at end of table.

Vehicle Inventory and Use Survey United States 19

U.S. Census Bureau, 2002 Economic Census
Table 2b. Trucks, Truck Miles, and Average Annual Miles for All TrucksMeasures of Sampling

Variability: 2002 and 1997Con.

[Estimates are shown as percents and are based on data from the 2002 and 1997 Vehicle Inventory and Use Surveys. Columns A, B, D, E, G, H show estimated coefficients of variation. Columns C, F,

and I show estimated standard errors]

Vehicular and operational characteristics

2002

trucks

1997

trucks

Percent

change

2002 truck

miles

1997 truck

miles

Percent

change

2002 average

miles per

truck

1997 average

miles per

truck

Percent

change

ABCDE FGH I

PRIMARY RANGE OF OPERATION

Offtheroad 7.2  3.8 3.0 9.7 5.9 4.4 7.2 4.2 8.9

50 miles or less .6  .5 .9 .9 .8 1.3 .7 .7 .9

51 to 100 miles 2.7  2.0 2.7 3.1 2.5 2.8 1.8 1.7 2.2

101 to 200 miles 5.2  3.7 4.6 5.6 3.8 4.2 3.4 2.6 3.7

201 to 500 miles 6.4  4.6 5.0 5.7 3.4 4.0 4.7 2.7 5.2

501 miles or more 6.3  4.6 5.6 3.7 2.6 2.9 4.3 3.1 4.7

Not reported 2.1  7.6 97.5 2.4 N N 1.4 N N

Not applicable1  5.7 N N 13.8 N N 13.3 N N

PRIMARY JURISDICTION

Operated in Canada 43.0  N N 36.6 N N 19.2 N N

Operated in Mexico S  NNSNNSN N

Operated within the home base state .4  N N .8 N N .6 N N

Operated in states other than the home base

state 4.7  N N 2.6 N N 3.1 N N

Not reported 2.4  N N 2.7 N N 1.6 N N

Not applicable1  5.7 N N 13.8 N N 13.3 N N

MONTHS OPERATED

12 .6  N N .8 N N .6 N N 7 to 11 2.1  N N 2.4 N N 1.4 N N 2 to 6 2.3  N N 3.4 N N 2.4 N N 1 or less 4.5  N N 9.7 N N 8.6 N N Vehicle not used 5.7  N N 13.8 N N 13.3 N N

VEHICLE SIZE

Light .2  .2 .3 .7 .7 1.1 .7 .7 .9

Medium 3.3  2.4 5.4 4.2 4.4 8.1 2.5 2.9 3.8

Lightheavy 2.2  1.7 3.5 2.6 2.9 4.6 2.3 2.3 3.1

Heavyheavy .5  .5 .7 .7 .6 .8 .7 .6 .8

AVERAGE WEIGHT (POUNDS)

Less than 6,001 .5  .3 .6 .9 .7 1.0 .7 .7 .9

6,001 to 8,500 1.9  N N 2.5 N N 1.5 N N 8,501 to 10,000 4.4  N N 6.3 N N 3.9 N N 10,001 to 14,000 4.4  3.7 8.0 5.5 6.4 11.1 3.0 3.9 4.6 14,001 to 16,000 6.6  3.5 9.4 8.7 4.8 14.9 5.6 3.3 7.8

16,001 to 19,500 7.7  4.4 11.1 10.0 10.2 16.9 6.4 7.7 9.5 19,501 to 26,000 2.2  1.7 3.5 2.6 2.9 4.6 2.3 2.3 3.1 26,001 to 33,000 2.1  2.1 3.1 3.3 3.6 4.0 2.5 2.7 3.0 33,001 to 40,000 2.5  2.3 3.1 4.3 3.1 3.1 3.7 2.5 2.9 40,001 to 50,000 1.9  1.6 2.0 3.1 2.4 2.0 2.6 1.9 2.1

50,001 to 60,000 1.6  1.7 2.5 3.3 2.4 2.9 2.7 1.7 2.1 60,001 to 80,000 .6  .7 1.1 .9 .9 1.3 .7 .6 .9 80,001 to 100,000 3.4  3.4 7.1 4.5 4.2 7.5 2.9 2.5 3.1 100,001 to 130,000 4.7  5.1 10.2 7.3 6.4 14.5 4.8 3.7 6.2 130,001 or more 9.3  10.3 14.7 10.5 11.7 16.7 5.4 5.6 7.7

TOTAL LENGTH (FEET)

Less than 20.0 .4  .2 .4 .8 .7 1.0 .7 .7 .9

20.0 to 27.9 2.5  1.5 10.9 3.2 2.1 15.0 1.9 1.5 2.5

28.0 to 35.9 3.9  3.9 13.2 5.4 5.0 16.1 3.3 3.2 4.2

36.0 to 40.9 7.7  4.3 43.7 9.5 4.6 44.9 6.2 3.7 6.2

41.0 to 44.9 12.3  7.7 38.9 9.7 7.0 25.9 8.0 5.5 7.8

45.0 to 49.9 13.5  3.6 35.2 12.8 5.0 26.5 10.5 3.9 8.5

50.0 to 54.9 11.3  2.8 17.0 6.1 3.4 7.5 7.3 2.6 5.7

55.0 to 59.9 2.9  1.7 2.3 2.9 2.0 2.0 2.6 1.3 2.4

60.0 to 64.9 1.7  1.4 1.6 2.4 1.7 1.8 1.5 1.0 1.5

65.0 to 69.9 1.8  1.7 2.2 2.3 1.9 2.5 1.2 1.0 1.5

70.0 to 74.9 2.2  2.5 4.5 2.5 2.8 5.5 1.2 1.4 1.9 75.0 to 79.9 4.0  N N 4.4 N N 1.7 N N 80.0 or more 7.2  N N 11.5 N N 7.5 N N

MILES PER GALLON

Less than 5 1.5  4.4 3.9 2.3 1.9 2.2 2.0 4.5 4.4

5 to 6.9 2.2  1.0 2.0 1.3 .9 1.3 1.8 1.0 2.0

7 to 8.9 3.7  2.3 4.3 4.1 2.5 4.1 3.4 2.2 3.5

9 to 10.9 3.5  2.6 3.7 4.9 3.6 5.0 3.4 2.6 4.2

11 to 12.9 3.1  2.3 2.9 4.2 3.1 3.7 2.7 2.2 3.4

13 to 14.9 2.9  2.1 2.7 3.6 2.7 3.4 2.1 1.7 2.7

15 or more .8  .6 1.0 1.1 1.0 1.5 .8 .8 1.0

15 to 20.9 1.0  .8 1.4 1.3 1.2 1.8 .9 .9 1.2

21 to 24.9 3.0  2.3 2.9 3.6 2.9 3.3 2.0 1.7 2.5

25 or more 4.3  4.7 10.2 5.1 6.2 11.8 2.9 3.7 4.3

Not reported 1.9  4.0 76.8 2.2 3.1 59.2 1.3 4.6 4.3

Not applicable1  5.7 N N 13.8 N N 13.3 N N

See footnotes at end of table.

20 United States Vehicle Inventory and Use Survey

U.S. Census Bureau, 2002 Economic Census
Table 2b. Trucks, Truck Miles, and Average Annual Miles for All TrucksMeasures of Sampling

Variability: 2002 and 1997Con.

[Estimates are shown as percents and are based on data from the 2002 and 1997 Vehicle Inventory and Use Surveys. Columns A, B, D, E, G, H show estimated coefficients of variation. Columns C, F,

and I show estimated standard errors]

Vehicular and operational characteristics

2002

trucks

1997

trucks

Percent

change

2002 truck

miles

1997 truck

miles

Percent

change

2002 average

miles per

truck

1997 average

miles per

truck

Percent

change

ABCDE FGH I

MODEL YEAR

2003 26.9  N N 12.0 N N 20.2 N N

2002 3.5  N N 3.6 N N 1.8 N N

2001 2.9  N N 3.0 N N 1.5 N N

2000 2.7  N N 2.8 N N 1.6 N N

1999 2.9  N N 3.0 N N 1.5 N N

1998 3.1  S S 3.4 S S 1.8 S S

1997 3.2  3.1 5.4 3.6 2.9 5.0 2.0 1.7 2.3

1996 3.4  2.8 3.7 3.9 2.9 3.2 2.2 1.5 2.1

1995 3.3  2.5 3.6 3.6 2.9 2.8 2.0 1.8 1.8

1994 3.5  2.7 3.5 4.2 2.9 2.9 2.5 1.6 2.1

1993 4.0  3.0 4.0 4.4 3.2 2.9 2.5 1.7 2.0

Pre1993 1.2  .6 .8 2.0 1.0 .9 1.5 .8 1.2

VEHICLE ACQUISITION

New 1.0  1.0 1.7 1.2 1.2 2.0 .8 .8 1.1

Used .9  .8 1.3 1.3 1.2 1.8 .9 .9 1.2

Not reported 3.1  3.0 5.1 3.5 2.7 3.5 1.9 1.4 1.6

LEASE CHARACTERISTICS

Leased 3.4  N N 3.0 N N 1.8 N N Lessee 4.0  N N 3.9 N N 2.1 N N Vehicle only 2.1  N N 2.7 N N 2.0 N N Vehicle with driver 6.4  N N 6.8 N N 3.0 N N Not reported 25.2  N N 27.1 N N 23.4 N N Not applicable3  4.4 N N 5.1 N N 2.5 N N Lessor 8.1  N N 4.3 N N 4.9 N N Vehicle only 2.4  N N 2.7 N N 1.9 N N Vehicle with driver 5.7  N N 6.9 N N 3.5 N N Not reported 28.1  N N 29.8 N N 24.6 N N Not applicable3  15.1 N N 15.1 N N 6.2 N N Not reported 12.5  N N 11.9 N N 5.7 N N Not leased .8  N N 1.1 N N .8 N N Not reported 1.1  N N 1.4 N N 1.0 N N

Length of leasing agreement: Leased 3.4  N N 3.0 N N 1.8 N N 1 to 11 months 5.3  N N 5.9 N N 4.3 N N 12 months or more 1.5  N N 1.8 N N 1.3 N N

Not reported 11.1  N N 12.4 N N 10.7 N N

Not applicable3  4.0 N N 4.6 N N 2.3 N N

Provisions of lease:

Financing only 2.0  N N 2.4 N N 1.8 N N

Full maintenance 2.5  N N 2.8 N N 1.9 N N

Payment of taxes 2.4  N N 2.5 N N 1.7 N N

Obtaining licenses and permits 2.3  N N 2.5 N N 1.7 N N

Recordkeeping 3.3  N N 3.5 N N 2.4 N N

Fuel contract 4.9  N N 5.2 N N 3.5 N N

PRIMARY OPERATOR

CLASSIFICATION

Private 1.7  N N 2.1 N N 1.3 N N Motor carrier 3.5  N N 2.0 N N 2.3 N N Owner operator 6.2  N N 5.5 N N 4.1 N N Rental 7.6  N N 6.2 N N 3.4 N N Personal transportation .5  N N .8 N N .7 N N Not applicable1  5.7 N N 13.8 N N 13.3 N N

Forhire characteristics:

Type of carrier:

Contract 2.8  N N 1.8 N N 1.9 N N Common 1.5  N N 1.9 N N 1.4 N N Not reported 3.6  N N 3.8 N N 2.9 N N Not applicable4  .2 N N .7 N N .6 N N Type of service: Truckload 1.0  1.2 2.2 1.2 1.3 2.1 .9 .8 1.0 Lessthan truckload 4.8  2.5 6.7 3.9 2.5 4.0 2.6 1.9 2.3

Not reported 3.6  N N 3.9 N N 3.0 N N

Not applicable4  .2 N N .7 N N .6 N N

Source of hauls:

Shippers or receivers 2.0  N N 1.4 N N 1.4 N N

Brokers 3.8  N N 4.1 N N 2.6 N N

Centralized markets or exchanges 7.8  N N 10.9 N N 6.6 N N

Other N  NNNNNNN N

Not reported 2.5  N N 2.9 N N 2.2 N N

Not applicable4  .2 N N .7 N N .6 N N

HAZARDOUS MATERIALS CARRIED5

Carrying hazardous materials 1.9  1.8 2.4 2.4 2.0 2.9 1.6 1.5 2.3 Not carrying hazardous materials .6  .4 .6 .9 .7 .9 .7 .6 .9 Not reported 1.5  1.4 1.1 2.2 1.9 2.2 1.8 1.6 3.2

Not applicable6  .2 N N .7 N N .7 N N

See footnotes at end of table.

Vehicle Inventory and Use Survey United States 21

U.S. Census Bureau, 2002 Economic Census
Table 2b. Trucks, Truck Miles, and Average Annual Miles for All TrucksMeasures of Sampling

Variability: 2002 and 1997Con.

[Estimates are shown as percents and are based on data from the 2002 and 1997 Vehicle Inventory and Use Surveys. Columns A, B, D, E, G, H show estimated coefficients of variation. Columns C, F,

and I show estimated standard errors]

Vehicular and operational characteristics

2002

trucks

1997

trucks

Percent

change

2002 truck

miles

1997 truck

miles

Percent

change

2002 average

miles per

truck

1997 average

miles per

truck

Percent

change

ABCDE FGH I

EQUIPMENT TYPE 7

Aerial work platform/bucket 8.8  N N 9.2 N N 6.3 N N

Air bag(s) (safety device only) .8  1.4 4.1 1.0 1.5 4.1 .7 .8 .9

Air compressor (except air brakes) 2.0  N N 2.4 N N 1.9 N N

Airconditioning .4  .5 .9 .7 .8 1.3 .6 .6 .8

Air springs 1.1  N N 1.4 N N .9 N N

Antilock brake system .7  1.0 2.0 .9 1.2 2.2 .7 .7 .9 Collision warning system 5.1  N N 6.5 N N 4.7 N N Computerized drive train control unit 2.4  N N 2.8 N N 1.6 N N Crane 3.9  N N 5.4 N N 3.7 N N Electronic vehicle identification device 3.1  2.9 4.2 3.4 2.8 4.4 1.7 1.9 2.6

Engine retarder/brake .8  1.0 1.5 1.2 1.1 1.7 .8 .8 1.1

Frontwheel drive 1.0  1.6 4.6 1.4 2.0 5.2 .9 1.2 1.3

Hoist 1.4  N N 2.5 N N 2.1 N N

Idlereducing technology (portable auxiliary pack,

electrification, etc.) 4.4  N N 3.6 N N 2.6 N N

Internet access 9.3  N N 8.3 N N 6.5 N N

Lift gate 2.5  N N 3.3 N N 2.2 N N

Mounting bar for snowplow 6.6  N N 9.2 N N 6.0 N N

Navigational system 8.1  3.9 2.9 8.4 4.3 2.7 5.0 2.6 5.0

Power takeoff .9  N N 1.5 N N 1.3 N N

Radial tires .7  .4 .7 .9 .7 1.0 .7 .6 .8

Reflective material in addition to those required

by law 1.6  1.1 1.2 2.1 1.2 1.2 1.5 1.1 1.4 Road speed governor 1.4  .9 1.6 1.3 1.0 1.5 1.0 .8 1.3 Toolbox 2.5  N N 3.0 N N 2.0 N N Trip recorder or onboard computer with

communication capabilities 4.2  N N 3.6 N N 2.3 N N Trip recorder or onboard computer without

communication capabilities 2.0  N N 2.3 N N 1.4 N N

Vehicle control aids for handicapped drivers 24.9  16.7 34.1 27.6 25.2 24.0 10.2 18.0 11.6

Wheelchair lift 18.9  16.5 38.2 21.7 21.2 27.9 14.7 18.9 14.4

Winch 7.4  N N 8.6 N N 5.8 N N

Transmission type: Automatic .5  N N .9 N N .7 N N

Manual 1.5  N N 1.6 N N 1.2 N N

Semiautomated manual 25.7  N N 20.5 N N 11.0 N N

Automated manual 22.6  N N 15.6 N N 19.3 N N Not reported 3.9  N N 4.1 N N 2.1 N N

Braking system:

Hydraulic (standard) 1.0  1.3 2.0 2.9 2.2 4.9 2.4 1.8 3.3

Hydraulic with power assist 1.7  1.2 1.7 3.2 1.9 2.9 2.0 1.4 2.3

Air .5  .5 .7 .8 .7 .9 .7 .6 .9

Other N  6.3 N N 8.0 N N 5.7 N Not reported 2.7  N N 2.5 N N 2.4 N N

Not applicable8  .2 N N .7 N N .7 N N

FUEL TYPE AND ENGINE SIZE

Fuel type:

Gasoline .3  .2 .4 .7 .7 1.1 .7 .7 .9

Diesel 2.1  1.7 3.3 1.5 1.1 2.0 1.4 1.1 1.5

Natural gas 22.1  N N 24.9 N N 14.6 N N

Propane 11.9  N N 11.6 N N 6.7 N N

Alcohol fuels 11.8  N N 14.1 N N 7.5 N N

Electricity S  NNSNNSN N

Combination 12.3  N N 13.5 N N 5.8 N N Other N  NNNNNNN N Not reported 27.1  N N 30.7 N N 9.8 N N Not applicable1  5.7 N N 13.8 N N 13.3 N N

Cylinders9:

4 cylinders 2.3  2.0 3.1 2.9 2.8 3.5 1.8 2.0 2.3

6 cylinders .8  .8 1.5 1.0 1.0 1.5 .7 .7 .9

8 cylinders 1.1  1.0 1.7 1.6 1.5 2.4 1.1 1.1 1.5

Other 4.6  3.7 3.8 8.8 4.1 6.4 6.4 3.8 7.8

Cubic inch displacement9:

Gasoline fuel .3  .2 .4 .7 .7 1.1 .7 .7 .9

Less than 200 1.6  1.3 2.1 2.1 1.9 2.4 1.3 1.3 1.6

200 to 299 1.2  1.4 2.9 1.5 1.7 3.4 1.0 1.0 1.3

300 to 349 2.1  1.7 2.8 2.7 2.5 3.7 1.7 1.7 2.3

350 to 399 2.1  1.7 2.4 2.9 2.2 3.0 1.9 1.5 2.3

400 or more 3.9  4.3 6.4 5.4 5.5 8.3 3.6 3.6 5.0

Not available 6.2  3.8 3.4 14.3 6.0 6.7 11.6 5.0 11.8

Diesel fuel 2.1  1.7 3.3 1.5 1.1 2.0 1.4 1.1 1.5

Less than 400 5.1  4.6 8.0 5.2 4.9 7.1 3.4 3.0 3.8

400 to 599 3.9  3.7 9.3 4.7 4.4 9.8 2.9 2.8 3.5

600 to 799 .9  1.1 1.7 1.3 1.3 2.1 .9 .9 1.2

800 or more 1.4  .9 1.4 1.7 1.2 1.4 1.4 .8 1.3

Not available 2.3  1.4 1.8 2.7 2.1 2.7 2.6 1.7 3.7

Other fuel 8.1  12.3 39.3 9.3 13.3 47.7 4.3 10.7 12.6

Less than 400 8.8  15.4 58.3 10.0 13.6 64.0 4.5 12.2 15.1

400 or more 16.2  26.1 39.5 15.5 35.8 31.9 10.3 13.1 10.6

Not available 17.2  20.8 9.2 26.3 25.8 12.8 20.6 22.0 30.8

Not reported 27.1  N N 30.7 N N 9.8 N N

Not applicable1  5.7 N N 13.8 N N 13.3 N N

See footnotes at end of table.

22 United States Vehicle Inventory and Use Survey

U.S. Census Bureau, 2002 Economic Census
Table 2b. Trucks, Truck Miles, and Average Annual Miles for All TrucksMeasures of Sampling

Variability: 2002 and 1997Con.

[Estimates are shown as percents and are based on data from the 2002 and 1997 Vehicle Inventory and Use Surveys. Columns A, B, D, E, G, H show estimated coefficients of variation. Columns C, F,

and I show estimated standard errors]

Vehicular and operational characteristics

2002

trucks

1997

trucks

Percent

change

2002 truck

miles

1997 truck

miles

Percent

change

2002 average

miles per

truck

1997 average

miles per

truck

Percent

change

ABCDE FGH I

REFUELING LOCATION

Gas station .3  N N .7 N N .7 N N

Truck stop 4.1  N N 2.6 N N 2.8 N N

Own facility (including home, farm, ranch, onsite

by mobile supplier, etc.) 3.2  N N 2.5 N N 2.0 N N

Other company’s/contractor’s facility not open to

the public 10.7  N N 9.6 N N 5.7 N N

Other 30.1  N N 32.0 N N 13.9 N N

Not reported 3.9  N N 4.0 N N 1.8 N N

Not applicable1  5.7 N N 13.8 N N 13.3 N N

MAINTENANCE

General maintenance performed by:

None performed 5.5  7.6 22.9 9.7 9.9 24.7 7.4 7.3 7.6

Companyowned maintenance facility 2.5  2.4 4.9 2.1 1.9 3.5 1.4 1.6 1.8

General repair business or private mechanic 1.0  1.1 2.1 1.3 1.4 2.6 .9 .9 1.2

Dealership service department 1.5  1.5 2.8 1.8 1.7 3.0 1.0 1.0 1.3

Leasing company 15.5  9.7 8.1 7.7 7.5 4.4 11.8 5.4 11.9

Individual not employed/paid by any

maintenance type facility 1.2  .8 1.2 1.6 1.3 1.6 1.1 1.0 1.3

Other N  8.2 N N 8.8 N N 5.8 N

Not reported 3.8  3.6 6.7 4.0 3.7 6.5 1.8 2.8 3.1

Not applicable1  5.7 N N 13.8 N N 13.3 N N

Extensive repairs performed by:

None performed .5  3.2 54.6 .8 4.1 68.7 .6 2.4 2.5

Companyowned maintenance facility 7.1  3.8 3.6 6.2 3.1 2.6 4.3 2.6 4.2

General repair business or private mechanic 3.2  1.7 1.5 3.9 2.2 1.9 2.6 1.4 3.0

Dealership service department 4.1  2.0 1.6 4.2 2.0 1.6 2.2 1.2 2.4

Leasing company 39.3  13.4 6.6 40.1 9.0 6.1 11.1 8.1 12.8

Component distributorship (engine,

transmission, body, etc.) 12.1  5.3 2.7 17.3 4.8 3.2 13.4 3.0 12.1

Individual not employed/paid by any repair type

facility 4.0  2.5 2.6 5.3 3.4 3.7 3.6 2.3 4.4

Other N  10.7 N N 12.2 N N 6.9 N

Not reported 16.6  .8 .1 26.3 1.2 .1 19.4 .9 20.4

Not applicable1  5.7 N N 13.8 N N 13.3 N N

TRUCK TYPE AND AXLE

ARRANGEMENT

Singleunit trucks and trucktractors without

trailer .2  .2 .3 .7 .7 1.0 .6 .6 .8

2 axles .2  .2 .3 .7 .7 1.0 .6 .6 .8

3 axles 1.2  1.4 1.8 2.1 2.3 2.9 1.8 1.8 2.4

4 axles 2.4  2.5 3.2 3.1 3.1 3.4 2.1 2.0 2.5

5 axles or more 5.1  N N 6.5 N N 3.9 N N

Not reported 24.2  N N 22.0 N N 28.1 N N

Combinations 3.1  2.1 4.6 1.7 1.0 1.9 2.4 1.6 2.2

Singleunit trucks with trailer 5.5  5.4 13.9 8.1 6.9 17.1 6.0 4.5 6.7

3 axles 8.9  11.7 26.6 16.8 18.1 39.2 14.2 11.2 15.9

4 axles 7.7  6.7 19.0 10.3 7.9 22.7 6.8 5.2 8.0

5 axles or more 17.6  7.7 19.1 24.0 6.9 21.8 15.4 6.4 14.6

Not reported 28.2  N N 31.1 N N 18.9 N N

Trucktractors with single trailer .5  .6 .7 .8 .7 1.0 .7 .6 .9

3 axles 4.8  4.2 5.0 6.1 5.7 5.4 4.2 4.0 4.8

4 axles 3.3  2.5 2.5 4.4 3.0 2.8 3.1 2.1 3.2

5 axles or more .6  .6 .8 .9 .8 1.1 .7 .6 .9

Not reported 3.3  N N 4.2 N N 2.6 N N

Trucktractors with double trailers 4.3  3.4 3.6 5.3 3.8 4.3 2.8 2.3 3.6

5 axles 6.3  5.1 5.6 7.0 5.6 6.8 3.6 3.4 5.4

6 axles 11.1  7.0 5.9 14.1 7.7 6.7 7.8 4.3 8.3

7 axles 11.9  8.3 7.0 16.9 9.3 7.7 8.2 5.2 8.1

8 axles or more 7.7  7.4 10.3 10.8 7.7 12.4 6.4 4.0 7.3

Not reported 22.1  N N 27.7 N N 13.6 N N

Trucktractors with triple trailers 28.1  12.7 10.6 33.2 13.2 20.1 12.4 5.0 21.9

7 axles 34.5  S S 36.8 S S 7.8 S S

8 axles S  15.5 S S 16.2 S S 5.9 S

9 axles S  25.4 S S 24.2 S S 10.5 S

10 axles or more S  SSSSSSS S

Not reported S  NNSNNSN N

Driving axles:

1 .7  .6 1.0 1.1 1.0 1.5 .9 .8 1.1

2 1.0  1.0 1.8 1.1 1.1 1.9 .7 .7 .9

3 or more 5.3  3.9 2.4 7.5 5.0 .9 5.4 3.5 1.8

Not reported 16.3  N N 14.1 N N 16.4 N N

Total liftable axles and locations:

None .4  .9 2.5 .7 1.1 3.1 .6 1.0 1.0

1 2.0  3.0 4.4 2.9 3.3 5.3 2.2 2.7 3.4

Forward of the drive axle 2.4  N N 3.6 N N 2.6 N N

Below the chassis 5.2  N N 8.3 N N 6.9 N N

Beyond the chassis 8.2  N N 11.0 N N 7.1 N N

Not reported 5.7  N N 7.7 N N 5.4 N N

2 or more 5.2  9.0 7.7 6.0 7.7 8.2 3.9 8.3 10.6

Forward of the drive axle 5.6  N N 6.2 N N 4.2 N N

Below the chassis 7.9  N N 10.4 N N 6.7 N N

Beyond the chassis 8.4  N N 9.9 N N 5.4 N N

Not reported 22.5  N N 27.8 N N 16.0 N N

Not reported 7.5  N N 9.3 N N 8.6 N N

Not applicable8  .2 N N .7 N N .7 N N

See footnotes at end of table.

Vehicle Inventory and Use Survey United States 23

U.S. Census Bureau, 2002 Economic Census
Table 2b. Trucks, Truck Miles, and Average Annual Miles for All TrucksMeasures of Sampling

Variability: 2002 and 1997Con.

[Estimates are shown as percents and are based on data from the 2002 and 1997 Vehicle Inventory and Use Surveys. Columns A, B, D, E, G, H show estimated coefficients of variation. Columns C, F,

and I show estimated standard errors]

Vehicular and operational characteristics

2002

trucks

1997

trucks

Percent

change

2002 truck

miles

1997 truck

miles

Percent

change

2002 average

miles per

truck

1997 average

miles per

truck

Percent

change

ABCDE FGH I

TRUCK TYPE AND AXLE

ARRANGEMENTCon.

Total liftable axles and number of braking axles:

None .4  .9 2.5 .7 1.1 3.1 .6 1.0 1.0

1 2.0  3.0 4.4 2.9 3.3 5.3 2.2 2.7 3.4

0 braking 5.3  N N 8.0 N N 6.3 N N

1 braking 2.2  N N 3.2 N N 2.4 N N

Not reported 10.1  N N 15.3 N N 11.5 N N

2 or more 5.2  9.0 7.7 6.0 7.7 8.2 3.9 8.3 10.6

0 braking 23.0  N N 28.2 N N 18.7 N N

1 braking 25.0  N N 30.4 N N 18.6 N N

2 or more braking 5.7  N N 6.5 N N 4.2 N N

Not reported 23.4  N N 30.7 N N 16.8 N N

Not reported 7.5  N N 9.3 N N 8.6 N N

Not applicable8  .2 N N .7 N N .7 N N

CAB TYPE

Conventional cab .5  .5 .7 .8 .7 1.1 .6 .6 .8 With sleeper 1.1  N N 1.4 N N .8 N N Without sleeper .5  N N 1.2 N N .9 N N Not reported 3.6  N N 4.4 N N 2.2 N N

Cab over engine 1.2  1.6 1.7 2.3 2.0 2.7 1.8 1.6 2.6 With sleeper 3.2  N N 4.7 N N 2.8 N N Without sleeper 1.4  N N 2.1 N N 1.6 N N Not reported 10.1  N N 12.4 N N 5.3 N N

Cab forward of engine 9.5  3.8 1.0 13.8 4.6 1.2 7.4 3.2 7.2 Cab beside engine 12.3  8.6 3.7 17.0 12.1 4.0 10.6 8.6 10.5 Not reported 34.2  N N 25.9 N N 26.5 N N Not applicable8  .2 N N .7 N N .7 N N

N Not available. S Estimate does not meet publication standards because of high sampling variability or poor response quality. V Represents an estimate of less than 50 vehicles, 50,000

miles, or 0.05 percent.

1Vehicles not in use. When the respondent had partialyear ownership of the vehicle, annual miles were adjusted to reflect miles traveled when not owned by the respondent. 2Trucktractors not in use. 3Lessees or lessors of pickups, minivans, other light vans, and sport utilities.

4Includes pickups, minivans, other light vans, and sport utilities; all other vehicles that are private, rental, or used for personal transportation; and vehicles not in use. 5Distributed miles data are available in Table 8.

6Includes pickups, minivans, other light vans, and sport utilities; all other vehicles that are rental or used for personal transportation; and vehicles not in use. 7Pickups, minivans, other light vans, and sport utilites, in the Equipment Type section, were only required to report for aerial work platform/bucket, air bag(s), airconditioning, antilock brake

system, computerized drive train control unit, frontwheel drive, mounting bar for snowplow, radial tires, toolbox, trip recorder, vehicle control aids for handicapped drivers, wheelchair lift, and winch. 8Pickups, minivans, other light vans, and sport utilities.

9Data were derived from administrative records.

24 United States Vehicle Inventory and Use Survey

U.S. Census Bureau, 2002 Economic Census
Table 3a. Trucks, Truck Miles, and Average Annual Miles for Trucks, Excluding Pickups,

Minivans, Other Light Vans, and Sport Utilities: 2002 and 1997

[Estimates are based on data from the 2002 and 1997 Vehicle Inventory and Use Surveys. Because of rounding, estimates may not be additive]

Vehicular and operational characteristics 2002 trucks

(thousands)

1997 trucks

(thousands)

Percent

change

2002 truck

miles

(millions)

1997 truck

miles

(millions)

Percent

change

2002 average

miles per

truck

(thousands)

1997 average

miles per

truck

(thousands)

Percent

change

ABCDE FGH I

Total 5 520.5  5 664.9 –2.5 145 172.5 157 366.7 –7.7 26.3 27.8 –5.3

BUSINESS1

Forhire transportation or warehousing 1 018.7  938.2 8.6 65 349.7 69 019.2 –5.3 64.2 73.6 –12.8

Vehicle leasing or rental 306.5  199.5 53.7 10 693.1 6 553.6 63.2 34.9 32.9 6.2

Agriculture, forestry, fishing, or hunting 793.1  966.9 –18.0 7 797.3 11 113.9 –29.8 9.8 11.5 –14.5

Mining 87.4  82.1 6.5 1 981.1 1 921.8 3.1 22.7 23.4 –3.2

Utilities 186.4  205.0 –9.0 2 498.4 2 571.0 –2.8 13.4 12.5 6.8

Construction 1 027.4  1 161.9 –11.6 14 997.5 17 559.0 –14.6 14.6 15.1 –3.4

Manufacturing 227.3  258.6 –12.1 5 509.1 8 922.2 –38.3 24.2 34.5 –29.7

Wholesale trade 285.2  440.4 –35.2 7 783.7 14 753.9 –47.2 27.3 33.5 –18.5

Retail trade 361.1  469.4 –23.1 9 486.4 11 529.1 –17.7 26.3 24.6 7.0

Information services 49.0  N N 560.4 N N 11.4 N N

Waste management, landscaping, or

administrative/support services 293.2  N N 5 100.7 N N 17.4 N N

Arts, entertainment, or recreation services 27.3  N N 200.6 N N 7.4 N N

Accommodation or food services 80.2  N N 2 402.4 N N 30.0 N N

Other services 146.0  N N 2 207.7 N N 15.1 N N

Personal transportation 47.0  183.0 –74.3 311.1 952.5 –67.3 6.6 5.2 27.0

Not reported 358.6  V N 8 143.3 V N 22.7 V N

Not applicable2  226.1 168.6 34.1 149.9 31.8 371.6 .7 .2 251.7

BODY TYPE

Singleunit trucks 4 098.6  4 121.1 –.5 55 002.3 56 241.8 –2.2 13.4 13.6 –1.7

Armored 11.3  N N 293.8 N N 26.1 N N

Beverage 41.6  41.1 1.3 582.6 614.0 –5.1 14.0 14.9 –6.3

Concrete mixer 77.0  72.2 6.6 1 201.0 1 090.5 10.1 15.6 15.1 3.3

Concrete pumper 5.9  N N 105.4 N N 17.8 N N

Crane 17.6  52.1 –66.3 121.2 676.6 –82.1 6.9 13.0 –46.9

Curtainside 3.6  N N 69.5 N N 19.3 N N

Dump 727.0  574.4 26.6 7 244.1 6 864.6 5.5 10.0 12.0 –16.6

Flatbed, stake, or platform 948.1  1 250.7 –24.2 9 446.7 12 789.5 –26.1 10.0 10.2 –2.6

Low boy 3.6  26.1 –86.2 20.9 390.8 –94.6 5.8 15.0 –61.1

Pole, logging, pulpwood, or pipe 18.1  22.4 –19.2 391.1 481.0 –18.7 21.6 21.5 .7

Service, utility 262.1  151.3 73.2 3 214.6 1 653.9 94.4 12.3 10.9 12.2

Service, other 221.8  168.4 31.7 3 431.4 2 263.4 51.6 15.5 13.4 15.1

Street sweeper 6.4  N N 80.2 N N 12.6 N N Tank, dry bulk 26.1  15.5 67.7 191.9 193.5 –.8 7.4 12.5 –40.9 Tank, liquids or gases 166.7  165.2 .9 2 152.1 2 559.0 –15.9 12.9 15.5 –16.6

Tow/Wrecker 127.8  111.7 14.4 2 056.7 1 734.9 18.6 16.1 15.5 3.6

Trash, garbage, or recycling 96.0  85.9 11.9 2 244.9 2 015.7 11.4 23.4 23.5 –.4

Vacuum 14.7  N N 224.1 N N 15.2 N N

Van, basic enclosed 583.1  399.2 46.0 11 271.0 9 170.3 22.9 19.3 23.0 –15.8

Van, insulated nonrefrigerated 18.9  10.4 81.7 335.1 228.1 46.9 17.7 21.9 –19.1

Van, insulated refrigerated 86.3  77.8 10.9 2 094.4 2 026.3 3.4 24.3 26.0 –6.8

Van, open top 151.7  244.2 –37.9 442.1 876.1 –49.5 2.9 3.6 –18.8

Van, step, walkin, or multistop 413.1  557.9 –26.0 6 835.6 9 257.2 –26.2 16.5 16.6 –.3

Van, other 69.0  N N 940.9 N N 13.6 N N

Other 1.1  NNSNNSN N

Trucktractors 1 421.9  1 543.8 –7.9 90 170.2 101 124.9 –10.8 63.4 65.5 –3.2

Automobile carrier 12.8  10.8 18.6 894.5 753.0 18.8 69.8 69.7 .1

Beverage 33.6  29.2 15.3 636.1 630.8 .8 18.9 21.6 –12.5

Curtainside 3.5  N N 272.1 N N 77.5 N N Dump 129.2  96.5 33.9 5 258.9 4 505.2 16.7 40.7 46.7 –12.8

Flatbed, stake, or platform 193.5  233.5 –17.1 9 576.0 13 264.8 –27.8 49.5 56.8 –12.9

Livestock 15.3  14.7 3.7 729.4 865.7 –15.7 47.7 58.8 –18.8

Low boy 57.7  85.0 –32.1 1 525.5 2 317.8 –34.2 26.5 27.3 –3.0

Mobile home toter 4.9  N N 136.0 N N 28.0 N N

Open top 64.0  75.6 –15.4 2 208.8 2 929.4 –24.6 34.5 38.7 –10.8

Pole, logging, pulpwood, or pipe 21.7  33.3 –34.8 1 106.9 1 677.8 –34.0 50.9 50.3 1.1

Tank, dry bulk 28.3  24.2 17.0 1 855.6 1 661.8 11.7 65.6 68.7 –4.5

Tank, liquids or gases 80.6  84.2 –4.3 5 565.1 6 046.0 –8.0 69.0 71.8 –3.8

Van, basic enclosed 592.6  609.7 –2.8 47 381.8 46 679.8 1.5 80.0 76.6 4.4

Van, dropframe 14.0  32.1 –56.4 917.1 1 856.6 –50.6 65.6 57.9 13.4

Van, insulated nonrefrigerated 14.9  24.1 –38.2 1 341.0 2 347.7 –42.9 90.1 97.4 –7.5

Van, insulated refrigerated 120.4  156.1 –22.9 10 742.1 14 336.7 –25.1 89.2 91.8 –2.9 Other 1.3  N N 23.1 N N 17.9 N N Not applicable3  33.7 NNSNNSN N

ANNUAL MILES

Less than 5,000 1 394.5  1 421.1 –1.9 2 412.6 2 553.1 –5.5 1.7 1.8 –3.7

5,000 to 9,999 719.2  753.4 –4.5 5 013.2 5 102.7 –1.8 7.0 6.8 2.9

10,000 to 19,999 1 059.5  1 128.8 –6.1 14 691.5 15 316.3 –4.1 13.9 13.6 2.2

20,000 to 29,999 671.9  585.5 14.8 15 870.2 13 535.7 17.2 23.6 23.1 2.2

30,000 to 49,999 529.3  571.1 –7.3 19 491.5 20 904.2 –6.8 36.8 36.6 .6

50,000 to 74,999 313.7  374.5 –16.2 19 059.2 22 270.1 –14.4 60.7 59.5 2.2

75,000 or more 606.2  697.3 –13.1 68 484.4 77 684.5 –11.8 113.0 111.4 1.4

Not applicable2  226.1 133.2 69.8 149.9 V N .7 V N

See footnotes at end of table.

Vehicle Inventory and Use Survey United States 25

U.S. Census Bureau, 2002 Economic Census
Table 3a. Trucks, Truck Miles, and Average Annual Miles for Trucks, Excluding Pickups,

Minivans, Other Light Vans, and Sport Utilities: 2002 and 1997Con.

[Estimates are based on data from the 2002 and 1997 Vehicle Inventory and Use Surveys. Because of rounding, estimates may not be additive]

Vehicular and operational characteristics 2002 trucks

(thousands)

1997 trucks

(thousands)

Percent

change

2002 truck

miles

(millions)

1997 truck

miles

(millions)

Percent

change

2002 average

miles per

truck

(thousands)

1997 average

miles per

truck

(thousands)

Percent

change

ABCDE FGH I

PRIMARY RANGE OF OPERATION

Offtheroad 182.9  350.6 –47.8 2 262.8 2 094.3 8.0 12.4 6.0 107.1

50 miles or less 2 942.4  2 971.4 –1.0 42 531.1 38 226.9 11.3 14.5 12.9 12.4

51 to 100 miles 684.7  927.1 –26.1 19 161.6 26 156.5 –26.7 28.0 28.2 –.8

101 to 200 miles 243.5  426.6 –42.9 11 779.9 19 733.5 –40.3 48.4 46.3 4.6

201 to 500 miles 231.6  421.7 –45.1 17 519.7 28 274.0 –38.0 75.7 67.1 12.8

501 miles or more 293.0  434.4 –32.6 26 706.4 42 881.4 –37.7 91.2 98.7 –7.7

Not reported 716.3  133.1 438.3 25 061.1 V N 35.0 V N

Not applicable2  226.1 N N 149.9 N N .7 N N

PRIMARY JURISDICTION

Operated in Canada 1.7  N N 72.0 N N 42.7 N N

Operated in Mexico 1.6  N N 29.3 N N 18.5 N N

Operated within the home base state 4 196.4  N N 84 973.9 N N 20.2 N N

Operated in states other than the home base

state 495.6  N N 40 901.2 N N 82.5 N N

Not reported 599.1  N N 19 046.1 N N 31.8 N N

Not applicable2  226.1 N N 149.9 N N .7 N N

MONTHS OPERATED

12 3 109.1  N N 109 720.0 N N 35.3 N N 7 to 11 928.8  N N 23 978.8 N N 25.8 N N 2 to 6 911.9  N N 10 481.1 N N 11.5 N N 1 or less 344.5  N N 842.7 N N 2.4 N N Vehicle not used 226.1  N N 149.9 N N .7 N N

VEHICLE SIZE

Light 807.4  1 208.7 –33.2 9 234.8 13 665.4 –32.4 11.4 11.3 1.2

Medium 1 240.7  1 191.3 4.1 16 824.5 15 641.1 7.6 13.6 13.1 3.3

Lightheavy 885.1  729.3 21.4 11 541.3 10 129.3 13.9 13.0 13.9 –6.1

Heavyheavy 2 587.3  2 535.6 2.0 107 571.8 117 930.8 –8.8 41.6 46.5 –10.6

AVERAGE WEIGHT (POUNDS)

Less than 6,001 117.5  279.7 –58.0 1 219.5 2 497.7 –51.2 10.4 8.9 16.2

6,001 to 8,500 279.6  N N 2 904.5 N N 10.4 N N 8,501 to 10,000 410.3  N N 5 110.9 N N 12.5 N N 10,001 to 14,000 642.4  625.0 2.8 8 562.2 8 525.6 .4 13.3 13.6 –2.3 14,001 to 16,000 297.1  289.2 2.7 4 250.5 3 561.4 19.4 14.3 12.3 16.2

16,001 to 19,500 301.1  277.0 8.7 4 011.8 3 554.1 12.9 13.3 12.8 3.8 19,501 to 26,000 885.1  729.3 21.4 11 541.3 10 129.3 13.9 13.0 13.9 –6.1 26,001 to 33,000 433.4  427.7 1.3 5 817.5 7 092.5 –18.0 13.4 16.6 –19.1 33,001 to 40,000 228.6  256.7 –10.9 3 766.9 6 594.1 –42.9 16.5 25.7 –35.9 40,001 to 50,000 318.4  399.9 –20.4 6 697.6 13 078.2 –48.8 21.0 32.7 –35.7

50,001 to 60,000 326.6  311.4 4.9 8 950.4 12 652.6 –29.3 27.4 40.6 –32.5 60,001 to 80,000 1 178.7  1 069.8 10.2 77 489.4 74 723.6 3.7 65.7 69.9 –5.9 80,001 to 100,000 68.9  46.3 48.9 2 949.8 2 427.0 21.5 42.8 52.5 –18.4 100,001 to 130,000 26.4  17.9 47.1 1 571.1 1 051.0 49.5 59.6 58.6 1.6 130,001 or more 6.3  5.9 5.8 329.1 311.8 5.5 52.3 52.5 –.3

TOTAL LENGTH (FEET)

Less than 20.0 1 530.4  1 381.6 10.8 18 338.5 16 357.4 12.1 12.0 11.8 1.2

20.0 to 27.9 1 539.2  1 885.2 –18.4 19 495.8 23 565.6 –17.3 12.7 12.5 1.3

28.0 to 35.9 690.9  625.8 10.4 11 186.2 11 431.4 –2.1 16.2 18.3 –11.4

36.0 to 40.9 254.3  156.1 62.9 5 637.6 3 023.2 86.5 22.2 19.4 14.5

41.0 to 44.9 116.8  80.1 45.9 2 814.1 1 820.5 54.6 24.1 22.7 6.0

45.0 to 49.9 115.4  94.0 22.8 3 246.9 2 647.0 22.7 28.1 28.2 –.1

50.0 to 54.9 145.1  137.0 5.9 4 782.8 5 025.4 –4.8 33.0 36.7 –10.2

55.0 to 59.9 228.3  336.6 –32.2 10 041.0 17 737.3 –43.4 44.0 52.7 –16.5

60.0 to 64.9 301.6  417.3 –27.7 17 561.5 28 469.3 –38.3 58.2 68.2 –14.7

65.0 to 69.9 273.3  303.8 –10.0 21 406.1 25 422.4 –15.8 78.3 83.7 –6.4

70.0 to 74.9 217.2  156.4 38.9 20 632.7 14 110.3 46.2 95.0 90.2 5.3 75.0 to 79.9 92.1  N N 8 955.8 N N 97.3 N N 80.0 or more 15.7  N N 1 073.3 N N 68.2 N N

MILES PER GALLON

Less than 5 478.5  522.9 –8.5 11 002.9 14 682.5 –25.1 23.0 28.1 –18.1

5 to 6.9 1 423.1  1 842.0 –22.7 67 034.6 84 527.9 –20.7 47.1 45.9 2.6

7 to 8.9 772.7  1 040.6 –25.7 16 472.2 22 219.6 –25.9 21.3 21.4 –.2

9 to 10.9 773.8  841.5 –8.1 10 630.3 12 007.3 –11.5 13.7 14.3 –3.7

11 to 12.9 409.9  411.3 –.3 5 886.5 5 773.4 2.0 14.4 14.0 2.3

13 to 14.9 147.9  163.0 –9.2 2 178.6 2 591.0 –15.9 14.7 15.9 –7.4

15 or more 223.1  290.5 –23.2 2 964.6 4 309.6 –31.2 13.3 14.8 –10.4

15 to 20.9 223.1  275.0 –18.9 2 964.6 4 007.8 –26.0 13.3 14.6 –8.8

21 to 24.9 V  8.9 N V 118.1 N V 13.3 N

25 or more V  6.6 N V S S V S S

Not reported 1 065.3  553.0 92.6 28 852.9 11 255.4 156.3 27.1 20.4 33.1

Not applicable2  226.1 N N 149.9 N N .7 N N

See footnotes at end of table.

26 United States Vehicle Inventory and Use Survey

U.S. Census Bureau, 2002 Economic Census
Table 3a. Trucks, Truck Miles, and Average Annual Miles for Trucks, Excluding Pickups,

Minivans, Other Light Vans, and Sport Utilities: 2002 and 1997Con.

[Estimates are based on data from the 2002 and 1997 Vehicle Inventory and Use Surveys. Because of rounding, estimates may not be additive]

Vehicular and operational characteristics 2002 trucks

(thousands)

1997 trucks

(thousands)

Percent

change

2002 truck

miles

(millions)

1997 truck

miles

(millions)

Percent

change

2002 average

miles per

truck

(thousands)

1997 average

miles per

truck

(thousands)

Percent

change

ABCDE FGH I

MODEL YEAR

2003 40.4  N N 2 215.3 N N 54.8 N N

2002 179.0  N N 10 599.6 N N 59.2 N N

2001 286.3  N N 16 001.0 N N 55.9 N N

2000 455.7  N N 23 983.5 N N 52.6 N N

1999 399.4  N N 18 435.1 N N 46.2 N N

1998 283.9  S S 12 094.8 S S 42.6 S S

1997 288.3  275.1 4.8 9 602.8 14 996.6 –36.0 33.3 54.5 –38.9

1996 243.0  312.9 –22.3 8 211.0 19 223.6 –57.3 33.8 61.4 –45.0

1995 322.6  420.7 –23.3 9 290.7 22 116.6 –58.0 28.8 52.6 –45.2

1994 234.4  310.3 –24.5 5 663.4 15 470.4 –63.4 24.2 49.9 –51.5

1993 196.7  251.0 –21.6 4 589.5 12 084.3 –62.0 23.3 48.1 –51.5

Pre1993 2 590.8  4 044.1 –35.9 24 485.7 71 150.3 –65.6 9.5 17.6 –46.3

VEHICLE ACQUISITION

New 2 507.7  2 323.7 7.9 89 809.0 83 420.9 7.7 35.8 35.9 –.2 Used 2 614.7  2 762.7 –5.4 42 544.9 44 648.7 –4.7 16.3 16.2 .7 Not reported 398.1  578.4 –31.2 12 818.6 29 297.1 –56.2 32.2 50.6 –36.4

LEASE CHARACTERISTICS

Leased 675.6  N N 35 761.7 N N 52.9 N N Lessee 354.6  N N 18 497.9 N N 52.2 N N Vehicle only 332.7  N N 16 667.3 N N 50.1 N N Vehicle with driver 19.5  N N 1 748.1 N N 89.4 N N Not reported 2.3  N N 82.6 N N 35.5 N N Lessor 305.9  N N 16 610.8 N N 54.3 N N Vehicle only 267.3  N N 13 804.4 N N 51.6 N N Vehicle with driver 35.3  N N 2 657.2 N N 75.4 N N Not reported 3.3  N N 149.3 N N 45.7 N N Not reported 15.2  N N 652.9 N N 43.0 N N Not leased 3 107.5  N N 75 364.6 N N 24.3 N N Not reported 1 737.4  N N 34 046.2 N N 19.6 N N

Length of leasing agreement: Leased 675.6  N N 35 761.7 N N 52.9 N N 1 to 11 months 43.0  N N 2 179.1 N N 50.6 N N 12 months or more 618.8  N N 33 027.8 N N 53.4 N N Not reported 13.7  N N 554.7 N N 40.4 N N

Provisions of lease4:

Financing only 408.9  N N 20 602.6 N N 50.4 N N

Full maintenance 232.7  N N 11 813.0 N N 50.8 N N

Payment of taxes 267.1  N N 13 660.5 N N 51.1 N N

Obtaining licenses and permits 267.7  N N 14 408.6 N N 53.8 N N

Recordkeeping 148.0  N N 8 125.2 N N 54.9 N N

Fuel contract 72.4  N N 4 143.2 N N 57.2 N N

PRIMARY OPERATOR

CLASSIFICATION

Private 3 588.6  N N 56 394.4 N N 15.7 N N

Motor carrier 978.1  N N 58 191.0 N N 59.5 N N

Owner operator 354.0  N N 19 023.5 N N 53.7 N N

Rental 326.6  N N 11 102.5 N N 34.0 N N

Personal transportation 47.0  N N 311.1 N N 6.6 N N

Not applicable2  226.1 N N 149.9 N N .7 N N

Forhire characteristics:

Type of carrier:

Contract 602.4  N N 41 703.7 N N 69.2 N N

Common 536.4  N N 28 065.2 N N 52.3 N N

Not reported 193.3  N N 7 445.6 N N 38.5 N N

Not applicable5  4 188.4 N N 67 957.9 N N 16.2 N N

Type of service:

Truckload 792.6  579.8 36.7 55 846.8 46 815.7 19.3 70.5 80.7 –12.7

Lessthan truckload 350.1  283.2 23.6 14 289.3 16 472.1 –13.3 40.8 58.2 –29.8

Not reported 189.3  N N 7 078.0 N N 37.4 N N

Not applicable5  4 188.4 N N 67 957.9 N N 16.2 N N

Source of hauls:

Shippers or receivers 899.2  N N 57 610.6 N N 64.1 N N

Brokers 92.1  N N 6 501.9 N N 70.6 N N Centralized markets or exchanges 24.1  N N 1 042.7 N N 43.3 N N Other V  NNVNNVN N Not reported 316.7  N N 12 059.2 N N 38.1 N N Not applicable5  4 188.4 N N 67 957.9 N N 16.2 N N

HAZARDOUS MATERIALS CARRIED6

Carrying hazardous materials 366.1  403.3 –9.2 23 361.8 24 787.8 –5.8 63.8 61.5 3.8

Not carrying hazardous materials 3 873.5  4 436.3 –12.7 92 985.6 113 140.7 –17.8 24.0 25.5 –5.9

Not reported 681.1  778.9 –12.6 17 261.5 18 871.9 –8.5 25.3 24.2 4.6

Not applicable7  599.7 N N 11 563.5 N N 19.3 N N

EQUIPMENT TYPE4

Aerial work platform/bucket 132.8  N N 1 273.3 N N 9.6 N N

Air bag(s) (safety device only) 589.5  427.4 37.9 23 123.8 28 108.0 –17.7 39.2 65.8 –40.4

Air compressor (except air brakes) 353.0  N N 15 299.2 N N 43.3 N N

Airconditioning 2 753.9  2 242.3 22.8 112 397.8 110 507.4 1.7 40.8 49.3 –17.2

Air springs 671.0  N N 45 806.8 N N 68.3 N N

See footnotes at end of table.

Vehicle Inventory and Use Survey United States 27

U.S. Census Bureau, 2002 Economic Census
Table 3a. Trucks, Truck Miles, and Average Annual Miles for Trucks, Excluding Pickups,

Minivans, Other Light Vans, and Sport Utilities: 2002 and 1997Con.

[Estimates are based on data from the 2002 and 1997 Vehicle Inventory and Use Surveys. Because of rounding, estimates may not be additive]

Vehicular and operational characteristics 2002 trucks

(thousands)

1997 trucks

(thousands)

Percent

change

2002 truck

miles

(millions)

1997 truck

miles

(millions)

Percent

change

2002 average

miles per

truck

(thousands)

1997 average

miles per

truck

(thousands)

Percent

change

ABCDE FGH I

EQUIPMENT TYPE4Con.

Antilock brake system 1 595.6  748.9 113.1 76 213.1 37 196.0 104.9 47.8 49.7 –3.8

Collision warning system 64.5  N N 2 553.2 N N 39.6 N N

Computerized drive train control unit 167.6  N N 9 318.3 N N 55.6 N N

Crane 107.4  N N 1 522.8 N N 14.2 N N

Electronic vehicle identification device 146.0  147.9 –1.3 13 188.0 13 134.2 .4 90.3 88.8 1.7

Engine retarder/brake 951.5  831.5 14.4 58 553.7 55 246.9 6.0 61.5 66.4 –7.4

Frontwheel drive V  SSVSSVS S

Hoist 619.4  N N 5 423.4 N N 8.8 N N

Idlereducing technology (portable auxiliary pack,

electrification, etc.) 184.1  N N 12 561.3 N N 68.2 N N

Internet access 15.6  N N 1 262.8 N N 81.2 N N

Lift gate 302.8  N N 5 364.5 N N 17.7 N N Mounting bar for snowplow 73.8  N N 610.9 N N 8.3 N N Navigational system 20.9  64.9 –67.8 1 628.2 5 769.0 –71.8 77.8 88.8 –12.4 Power takeoff 1 389.9  N N 26 861.0 N N 19.3 N N Radial tires 3 200.8  3 732.3 –14.2 101 484.2 127 738.5 –20.6 31.7 34.2 –7.4

Reflective material in addition to those required

by law 725.2  1 182.8 –38.7 24 333.9 50 556.7 –51.9 33.6 42.7 –21.5

Road speed governor 1 397.7  1 451.5 –3.7 66 666.2 71 639.0 –6.9 47.7 49.4 –3.4

Toolbox 1 265.1  N N 29 884.1 N N 23.6 N N

Trip recorder or onboard computer with

communication capabilities 328.8  N N 24 542.9 N N 74.6 N N

Trip recorder or onboard computer without

communication capabilities 175.3  N N 9 809.0 N N 56.0 N N

Vehicle control aids for handicapped drivers V  VNVVNVV N

Wheelchair lift V  VNVVNVV N

Winch 264.1  N N 4 201.6 N N 15.9 N N

Transmission type:

Automatic 1 444.8  N N 23 653.8 N N 16.4 N N

Manual 3 587.5  N N 105 180.7 N N 29.3 N N

Semiautomated manual 28.2  N N 1 301.8 N N 46.1 N N

Automated manual 13.1  N N 945.1 N N 72.3 N N

Not reported 447.0  N N 14 091.1 N N 31.5 N N

Braking system:

Hydraulic (standard) 1 501.7  1 252.5 19.9 18 808.6 13 993.6 34.4 12.5 11.2 12.1

Hydraulic with power assist 1 189.1  1 453.7 –18.2 14 808.3 19 230.7 –23.0 12.5 13.2 –5.9

Air 2 307.3  2 457.4 –6.1 96 707.6 112 646.0 –14.1 41.9 45.8 –8.6

Other V  78.7 N V 1 018.1 N V 12.9 N

Not reported 522.4  N N 14 847.9 N N 28.4 N N

FUEL TYPE AND ENGINE SIZE

Fuel type:

Gasoline 1 651.8  2 155.4 –23.4 14 610.0 18 677.0 –21.8 8.8 8.7 2.1

Diesel 3 587.9  3 323.4 8.0 129 723.6 136 518.4 –5.0 36.2 41.1 –12.0

Natural gas 3.6  N N 72.3 N N 20.1 N N

Propane 38.2  N N 498.9 N N 13.0 N N

Alcohol fuels 1.3  NNSNNSN N

Electricity S  NNSNNSN N

Combination 8.6  N N 81.3 N N 9.5 N N Other V  NNVNNVN N

Not reported 3.0  N N 29.2 N N 9.7 N N

Not applicable2  226.1 N N 149.9 N N .7 N N

Cylinders8:

4 cylinders 173.1  118.1 46.5 3 299.8 2 495.9 32.2 19.1 21.1 –9.8

6 cylinders 2 738.7  2 407.7 13.7 115 960.0 119 111.5 –2.6 42.3 49.5 –14.4

8 cylinders 1 996.7  2 064.1 –3.3 22 259.3 25 370.0 –12.3 11.1 12.3 –9.3

Other 612.0  1 074.9 –43.1 3 653.3 10 389.2 –64.8 6.0 9.7 –38.2

Cubic inch displacement8:

Gasoline fuel 1 651.8  2 155.4 –23.4 14 610.0 18 677.0 –21.8 8.8 8.7 2.1

Less than 200 23.7  24.8 –4.5 268.3 340.3 –21.2 11.3 13.7 –17.4

200 to 299 64.4  88.0 –26.8 1 307.3 1 360.8 –3.9 20.3 15.5 31.2

300 to 349 79.7  67.2 18.7 982.4 692.1 41.9 12.3 10.3 19.6

350 to 399 723.8  847.1 –14.6 7 151.5 9 076.4 –21.2 9.9 10.7 –7.8

400 or more 365.8  382.7 –4.4 3 842.8 4 688.0 –18.0 10.5 12.2 –14.2

Not available 394.5  745.6 –47.1 1 057.6 2 519.4 –58.0 2.7 3.4 –20.7

Diesel fuel 3 587.9  3 323.4 8.0 129 723.6 136 518.4 –5.0 36.2 41.1 –12.0

Less than 400 494.1  425.6 16.1 8 783.8 8 716.9 .8 17.8 20.5 –13.2

400 to 599 1 207.2  842.6 43.3 22 734.2 18 105.3 25.6 18.8 21.5 –12.4

600 to 799 920.8  759.6 21.2 52 169.5 44 581.0 17.0 56.7 58.7 –3.5

800 or more 601.4  742.6 –19.0 32 523.2 48 059.1 –32.3 54.1 64.7 –16.4

Not available 364.3  552.9 –34.1 13 512.9 17 056.1 –20.8 37.1 30.8 20.2

Other fuel 51.7  54.0 –4.2 659.8 702.6 –6.1 12.8 13.0 –2.0

Less than 400 18.0  23.3 –22.8 209.2 333.6 –37.3 11.6 14.3 –18.8

400 or more 26.0  17.3 50.5 424.0 308.7 37.4 16.3 17.9 –8.7

Not available 7.7  13.4 –42.5 26.5 60.3 –56.0 3.5 4.5 –23.5

Not reported 3.0  N N 29.2 N N 9.7 N N

Not applicable2  226.1 N N 149.9 N N .7 N N

REFUELING LOCATION

Gas station 2 441.0  N N 36 263.4 N N 14.9 N N

Truck stop 861.9  N N 52 808.9 N N 61.3 N N

Own facility (including home, farm, ranch, onsite

by mobile supplier, etc.) 1 564.7  N N 43 790.5 N N 28.0 N N

Other company’s/contractor’s facility not open to

the public 146.2  N N 4 447.6 N N 30.4 N N

Other 1.0  N N 17.6 N N 18.5 N N

Not reported 279.6  N N 7 694.6 N N 27.5 N N

Not applicable2  226.1 N N 149.9 N N .7 N N

See footnotes at end of table.

28 United States Vehicle Inventory and Use Survey

U.S. Census Bureau, 2002 Economic Census
Table 3a. Trucks, Truck Miles, and Average Annual Miles for Trucks, Excluding Pickups,

Minivans, Other Light Vans, and Sport Utilities: 2002 and 1997Con.

[Estimates are based on data from the 2002 and 1997 Vehicle Inventory and Use Surveys. Because of rounding, estimates may not be additive]

Vehicular and operational characteristics 2002 trucks

(thousands)

1997 trucks

(thousands)

Percent

change

2002 truck

miles

(millions)

1997 truck

miles

(millions)

Percent

change

2002 average

miles per

truck

(thousands)

1997 average

miles per

truck

(thousands)

Percent

change

ABCDE FGH I

MAINTENANCE4

General maintenance performed by:

None performed 94.3  32.8 187.9 480.8 252.4 90.5 5.1 7.7 –33.9

Companyowned maintenance facility 2 374.4  2 132.4 11.3 85 696.5 79 857.9 7.3 36.1 37.4 –3.6

General repair business or private mechanic 1 670.0  1 346.2 24.1 46 632.5 36 207.3 28.8 27.9 26.9 3.8

Dealership service department 562.5  525.1 7.1 23 624.5 20 457.0 15.5 42.0 39.0 7.8

Leasing company 71.3  102.8 –30.6 3 342.7 5 690.0 –41.3 46.9 55.4 –15.3

Individual not employed/paid by any

maintenance type facility 1 077.0  1 875.4 –42.6 15 931.3 32 857.8 –51.5 14.8 17.5 –15.6

Other V  30.1 N V 1 175.6 N V 39.0 N

Not reported 273.9  551.3 –50.3 8 133.9 16 680.4 –51.2 29.7 30.3 –1.9

Not applicable2  226.1 N N 149.9 N N .7 N N

Extensive repairs performed by:

None performed 3 872.5  144.8 2 573.8 100 156.6 2 701.4 3 607.6 25.9 18.7 38.7

Companyowned maintenance facility 338.4  1 137.8 –70.3 11 434.1 40 043.4 –71.4 33.8 35.2 –4.0

General repair business or private mechanic 431.1  1 212.5 –64.4 12 929.5 27 039.1 –52.2 30.0 22.3 34.5

Dealership service department 223.1  824.1 –72.9 10 783.7 38 015.8 –71.6 48.3 46.1 4.8

Leasing company 10.2  68.1 –84.9 437.7 3 581.4 –87.8 42.7 52.6 –18.8

Component distributorship (engine,

transmission, body, etc.) 35.3  266.0 –86.7 1 797.5 14 691.2 –87.8 50.9 55.2 –7.8

Individual not employed/paid by any repair type

facility 153.8  441.5 –65.2 2 831.1 6 534.6 –56.7 18.4 14.8 24.4 Other V  19.0 N V 632.9 N V 33.3 N Not reported 5.8  1 993.4 –99.7 82.5 43 031.3 –99.8 14.3 21.6 –33.9 Not applicable2  226.1 N N 149.9 N N .7 N N

TRUCK TYPE AND AXLE

ARRANGEMENT

Singleunit trucks and trucktractors without trailer 3 873.9  3 853.3 .5 51 158.6 51 469.8 –.6 13.2 13.4 –1.1 2 axles 3 274.0  3 267.1 .2 41 450.1 41 323.2 .3 12.7 12.6 .1 3 axles 467.7  475.0 –1.5 6 784.7 7 186.9 –5.6 14.5 15.1 –4.1 4 axles 102.0  111.2 –8.3 2 303.5 2 959.7 –22.2 22.6 26.6 –15.1 5 axles or more 22.3  N N 547.4 N N 24.5 N N Not reported 8.0  V N 72.9 V N 9.2 V N

Combinations 1 646.6  1 811.6 –9.1 94 013.9 105 896.9 –11.2 57.1 58.5 –2.3

Singleunit trucks with trailer 258.3  267.8 –3.5 3 843.7 4 772.0 –19.5 14.9 17.8 –16.5

3 axles 55.1  44.1 25.0 687.9 488.8 40.7 12.5 11.1 12.6 4 axles 137.5  145.5 –5.5 1 647.4 2 068.1 –20.3 12.0 14.2 –15.7

5 axles or more 54.8  78.2 –30.0 1 290.1 2 215.1 –41.8 23.6 28.3 –16.8

Not reported 10.9  N N 218.4 N N 20.0 N N

Trucktractors with single trailer 1 320.1  1 438.2 –8.2 84 307.7 92 221.6 –8.6 63.9 64.1 –.4

3 axles 61.3  78.0 –21.4 1 404.5 2 183.2 –35.7 22.9 28.0 –18.1

4 axles 127.9  211.7 –39.6 4 594.3 8 808.8 –47.8 35.9 41.6 –13.6

5 axles or more 1 034.5  1 148.5 –9.9 73 112.2 81 229.5 –10.0 70.7 70.7 –.1

Not reported 96.4  N N 5 196.7 N N 53.9 N N

Trucktractors with double trailers 66.6  101.0 –34.0 5 617.4 8 466.7 –33.7 84.3 83.8 .6

5 axles 38.9  56.3 –30.9 3 558.0 4 730.3 –24.8 91.5 84.1 8.9

6 axles 10.8  24.0 –55.2 934.7 2 239.3 –58.3 86.9 93.3 –6.8

7 axles 5.3  11.0 –52.1 313.5 787.9 –60.2 59.6 71.7 –16.9

8 axles or more 9.5  9.8 –3.0 664.9 709.2 –6.3 70.2 72.6 –3.4

Not reported 2.3  N N 146.3 N N 64.8 N N

Trucktractors with triple trailers 1.5  4.5 –65.6 245.1 436.6 –43.9 158.6 97.1 63.3

7 axles 1.2  S S 220.1 S S 189.4 S S

8 axles S  3.0 S S 302.6 S S 99.9 S

9 axles S  1.2 S S 111.7 S S 95.1 S

10 axles or more S  SSSSSSS S

Not reported S  NNSNNSN N

Driving axles: 1 3 575.9  3 802.9 –6.0 52 920.6 62 757.8 –15.7 14.8 16.5 –10.3

2 1 907.5  1 800.0 6.0 91 660.3 91 029.0 .7 48.1 50.6 –5.0

3 or more 22.8  62.0 –63.3 376.0 3 579.8 –89.5 16.5 57.8 –71.4

Not reported 14.4  V N 215.6 V N 15.0 V N

Total liftable axles and locations9:

None 5 292.6  1 910.2 177.1 139 553.4 58 052.2 140.4 26.4 30.4 –13.2

1 175.0  138.1 26.8 4 451.5 3 632.9 22.5 25.4 26.3 –3.3

Forward of the drive axle 103.7  N N 2 976.9 N N 28.7 N N

Below the chassis 30.6  N N 588.4 N N 19.2 N N

Beyond the chassis 14.1  N N 234.1 N N 16.6 N N

Not reported 26.6  N N 652.2 N N 24.5 N N

2 or more 25.2  31.1 –18.9 651.5 741.4 –12.1 25.9 23.9 8.4

Forward of the drive axle 21.6  N N 527.8 N N 24.5 N N

Below the chassis 9.4  N N 235.6 N N 24.9 N N

Beyond the chassis 6.9  N N 129.6 N N 18.8 N N

Not reported 1.2  N N 32.7 N N 28.1 N N

Not reported 27.7  N N 516.2 N N 18.6 N N

Total liftable axles and number of braking axles:

None 5 292.6  1 910.2 177.1 139 553.4 58 052.2 140.4 26.4 30.4 –13.2

1 175.0  138.1 26.8 4 451.5 3 632.9 22.5 25.4 26.3 –3.3

0 braking 25.3  N N 576.7 N N 22.8 N N

1 braking 140.5  N N 3 687.4 N N 26.2 N N

Not reported 9.2  N N 187.4 N N 20.3 N N

2 or more 25.2  31.1 –18.9 651.5 741.4 –12.1 25.9 23.9 8.4

0 braking .9  N N 18.9 N N 21.6 N N

1 braking .9  N N 26.0 N N 27.8 N N

2 or more braking 22.6  N N 583.4 N N 25.8 N N

Not reported .8  N N 23.1 N N 29.6 N N

Not reported 27.7  N N 516.2 N N 18.6 N N

See footnotes at end of table.

Vehicle Inventory and Use Survey United States 29

U.S. Census Bureau, 2002 Economic Census
Table 3a. Trucks, Truck Miles, and Average Annual Miles for Trucks, Excluding Pickups,

Minivans, Other Light Vans, and Sport Utilities: 2002 and 1997Con.

[Estimates are based on data from the 2002 and 1997 Vehicle Inventory and Use Surveys. Because of rounding, estimates may not be additive]

Vehicular and operational characteristics 2002 trucks

(thousands)

1997 trucks

(thousands)

Percent

change

2002 truck

miles

(millions)

1997 truck

miles

(millions)

Percent

change

2002 average

miles per

truck

(thousands)

1997 average

miles per

truck

(thousands)

Percent

change

ABCDE FGH I

CAB TYPE

Conventional cab 4 878.7  4 240.5 15.1 127 623.2 124 168.8 2.8 26.2 29.3 –10.7

With sleeper 568.6  N N 49 177.6 N N 86.5 N N

Without sleeper 4 220.0  N N 72 741.0 N N 17.2 N N

Not reported 90.2  N N 5 704.7 N N 63.2 N N

Cab over engine 603.7  705.8 –14.5 17 088.5 19 006.7 –10.1 28.3 26.9 5.1

With sleeper 109.0  N N 7 042.5 N N 64.6 N N

Without sleeper 479.6  N N 8 994.1 N N 18.8 N N

Not reported 15.1  N N 1 051.9 N N 69.7 N N

Cab forward of engine 17.4  181.5 –90.4 284.3 3 335.9 –91.5 16.3 18.4 –11.1

Cab beside engine 9.3  37.6 –75.2 101.0 531.5 –81.0 10.9 14.2 –23.3

Not reported 11.4  N N 75.4 N N 6.6 N N

N Not available. S Estimate does not meet publication standards because of high sampling variability or poor response quality. V Represents an estimate of less than 50 vehicles, 50,000

miles, or 0.05 percent.

1Comparability of estimates may vary across survey years due to changes in category definitions.

2Vehicles not in use. When the respondent had partialyear ownership of the vehicle, annual miles were adjusted to reflect miles traveled when not owned by the respondent. 3Trucktractors not in use. 4Detail lines do not add to total trucks because items were not applicable or multiple responses were possible.

5Vehicles that are private, rental, or used for personal transportation; and vehicles not in use.

6Distributed miles data are available in Table 8.

7Vehicles that are rental or used for personal tranportation; and vehicles not in use.

8Data were derived from administrative records.

9Detail lines do not add to the subtotal line because items were not applicable or multiple responses were possible. When 2 or 3 liftable axles were indicated, respondents properly reported

multiple responses, therefore detail lines will be significantly greater than the corresponding subtotal line.

Note: Use caution when assessing the true increase or decrease in any particular data line. Large changes in the "not reported" or "not applicable" estimates should be taken into account.

Note: Table 3b provides estimated measures of sampling variability. The Introduction gives information on confidentiality protection, sampling error, nonsampling error, sample design, and

definitions. Links to this information on the Internet may be found at www.census.gov/svsd/www/02vehinv.html.

30 United States Vehicle Inventory and Use Survey

U.S. Census Bureau, 2002 Economic Census
Table 3b. Trucks, Truck Miles, and Average Annual Miles for Trucks, Excluding Pickups,

Minivans, Other Light Vans, and Sport UtilitiesMeasures of Sampling Variability:

2002 and 1997

[Estimates are shown as percents and are based on data from the 2002 and 1997 Vehicle Inventory and Use Surveys. Columns A, B, D, E, G, H show estimated coefficients of variation. Columns C, F,

and I show estimated standard errors]

Vehicular and operational characteristics

2002

trucks

1997

trucks

Percent

change

2002 truck

miles

1997 truck

miles

Percent

change

2002 average

miles per

truck

1997 average

miles per

truck

Percent

change

ABCDE FGH I

Total .4  .3 .5 .7 .6 .8 .6 .5 .7

BUSINESS

Forhire transportation or warehousing 1.8  1.1 2.3 1.3 1.0 1.5 1.2 .8 1.3 Vehicle leasing or rental 3.1  3.6 7.3 4.9 3.9 10.2 2.6 2.8 4.1 Agriculture, forestry, fishing, or hunting 1.2  1.3 1.4 2.6 2.3 2.4 2.3 2.0 2.6 Mining 3.9  4.0 5.9 5.6 5.1 7.8 4.5 4.0 5.9 Utilities 3.2  4.0 4.6 4.3 5.0 6.4 3.1 3.2 4.7

Construction 1.2  1.3 1.6 1.8 1.7 2.1 1.5 1.3 1.9

Manufacturing 3.7  3.2 4.3 3.6 3.1 2.9 3.9 2.8 3.4

Wholesale trade 2.3  2.2 2.1 2.9 2.5 2.0 2.0 1.8 2.2

Retail trade 2.1  2.4 2.4 3.3 2.8 3.6 2.6 2.0 3.5

Information services 6.0  N N 7.9 N N 4.8 N N

Waste management, landscaping, or

administrative/support services 2.7  N N 3.5 N N 2.4 N N

Arts, entertainment, or recreation services 8.5  N N 13.8 N N 9.9 N N

Accommodation or food services 4.6  N N 6.8 N N 5.3 N N

Other services 3.6  N N 5.1 N N 3.8 N N

Personal transportation 9.5  4.1 2.7 8.7 6.9 3.6 8.9 5.5 13.3

Not reported 2.5  N N 3.1 N N 2.6 N N

Not applicable1  2.8 4.4 7.0 10.9 24.5 126.2 10.4 23.9 91.8

BODY TYPE

Singleunit trucks .5  .5 .7 1.3 1.0 1.6 1.1 .9 1.3 Armored 38.4  N N 33.6 N N 9.5 N N Beverage 7.1  9.5 12.0 7.8 10.5 12.4 4.2 5.9 6.8 Concrete mixer 3.2  3.4 5.0 4.2 3.9 6.3 2.5 1.9 3.2 Concrete pumper 12.8  N N 19.1 N N 12.1 N N Crane 9.5  6.1 3.8 16.7 7.7 3.3 13.2 7.0 7.9

Curtainside 15.8  N N 19.8 N N 13.9 N N

Dump 1.5  1.8 2.9 2.2 2.3 3.4 1.9 2.0 2.3

Flatbed, stake, or platform 1.5  1.4 1.5 2.4 2.3 2.5 2.1 1.9 2.7

Low boy 18.6  8.8 2.8 26.9 13.5 1.6 21.6 9.1 9.1

Pole, logging, pulpwood, or pipe 6.5  7.3 7.9 8.8 10.1 10.9 7.4 7.6 10.7

Service, utility 2.8  4.2 8.7 4.2 5.5 13.4 2.9 3.5 5.1

Service, other 3.1  4.5 7.2 4.2 5.2 10.2 2.8 3.8 5.4

Street sweeper 16.0  N N 15.5 N N 12.3 N N

Tank, dry bulk 6.6  9.7 19.7 12.3 12.5 17.5 10.6 9.8 8.6

Tank, liquids or gases 3.0  3.4 4.6 4.4 5.2 5.7 3.3 4.0 4.3

Tow/Wrecker 4.8  5.1 8.0 7.2 7.0 11.9 6.0 5.5 8.4

Trash, garbage, or recycling 3.3  4.2 5.9 4.2 5.1 7.3 2.7 3.7 4.6

Vacuum 8.9  N N 11.9 N N 7.9 N N

Van, basic enclosed 2.0  2.4 4.6 4.5 3.3 6.9 3.2 2.3 3.3

Van, insulated nonrefrigerated 9.7  16.6 35.0 13.4 17.5 32.5 10.6 13.8 14.1

Van, insulated refrigerated 4.8  5.6 8.2 5.9 6.6 9.1 3.1 3.9 4.7 Van, open top 2.6  2.4 2.2 6.2 5.6 4.2 5.5 5.2 6.1 Van, step, walkin, or multistop 4.2  2.5 3.6 6.4 3.3 5.3 2.8 2.1 3.6 Van, other 5.5  N N 7.6 N N 5.0 N N Other 33.1  NNSNNSN N

Trucktractors .5  .5 .7 .8 .7 .9 .7 .6 .8

Automobile carrier 9.7  9.8 16.4 11.1 10.7 18.3 5.5 6.0 8.2

Beverage 6.7  7.8 11.9 8.2 9.6 12.8 5.7 4.7 6.4

Curtainside 16.1  N N 18.5 N N 10.7 N N Dump 2.6  3.2 5.5 3.8 3.7 6.2 2.5 2.3 2.9

Flatbed, stake, or platform 2.3  2.0 2.5 3.1 2.3 2.8 2.0 1.5 2.2

Livestock 8.7  7.3 11.7 10.1 8.6 11.2 6.9 5.8 7.4

Low boy 3.8  3.3 3.4 6.5 5.7 5.7 4.9 4.6 6.5

Mobile home toter 13.5  N N 22.3 N N 17.1 N N

Open top 3.2  3.2 3.8 5.5 4.6 5.4 4.0 3.3 4.6

Pole, logging, pulpwood, or pipe 5.5  4.9 4.8 7.4 5.5 6.1 4.2 3.4 5.5

Tank, dry bulk 6.1  6.5 10.4 7.8 7.2 11.9 4.5 3.5 5.4 Tank, liquids or gases 3.7  3.3 4.7 4.4 3.8 5.4 2.3 2.1 2.9 Van, basic enclosed 1.2  1.2 1.6 1.4 1.3 2.0 .9 .8 1.3 Van, dropframe 9.8  5.4 4.9 13.1 6.8 7.3 8.7 4.0 10.9 Van, insulated nonrefrigerated 7.7  5.6 5.9 8.4 5.5 5.7 4.3 2.6 4.6

Van, insulated refrigerated 2.9  2.5 3.0 3.4 2.6 3.2 1.6 1.4 2.1

Other 22.0  N N 27.2 N N 25.7 N N

Not applicable2  5.8 NNSNNSN N

ANNUAL MILES

Less than 5,000 1.1  1.1 1.5 1.4 1.5 2.0 .9 1.0 1.3 5,000 to 9,999 1.6  1.7 2.2 1.6 1.8 2.4 .3 .4 .6 10,000 to 19,999 1.2  1.5 1.8 1.2 1.5 1.9 .3 .3 .5 20,000 to 29,999 2.6  1.9 3.7 2.6 1.9 3.8 .2 .2 .3 30,000 to 49,999 2.1  1.9 2.6 2.0 1.9 2.6 .3 .3 .4

50,000 to 74,999 2.9  1.8 2.8 3.0 1.8 3.0 .3 .2 .4 75,000 or more 1.1  1.0 1.3 1.2 1.0 1.4 .4 .3 .5 Not applicable1  2.8 5.0 9.7 10.9 N N 10.4 N N

See footnotes at end of table.

Vehicle Inventory and Use Survey United States 31

U.S. Census Bureau, 2002 Economic Census
Table 3b. Trucks, Truck Miles, and Average Annual Miles for Trucks, Excluding Pickups,

Minivans, Other Light Vans, and Sport UtilitiesMeasures of Sampling Variability:

2002 and 1997Con.

[Estimates are shown as percents and are based on data from the 2002 and 1997 Vehicle Inventory and Use Surveys. Columns A, B, D, E, G, H show estimated coefficients of variation. Columns C, F,

and I show estimated standard errors]

Vehicular and operational characteristics

2002

trucks

1997

trucks

Percent

change

2002 truck

miles

1997 truck

miles

Percent

change

2002 average

miles per

truck

1997 average

miles per

truck

Percent

change

ABCDE FGH I

PRIMARY RANGE OF OPERATION

Offtheroad 2.9  2.6 2.0 6.4 4.5 8.5 5.8 4.1 14.7 50 miles or less .8  .7 1.0 1.4 1.1 2.0 1.0 .9 1.5 51 to 100 miles 1.5  1.5 1.5 1.9 1.7 1.8 1.4 1.2 1.8 101 to 200 miles 2.2  2.2 1.8 2.6 2.0 2.0 1.7 1.5 2.4 201 to 500 miles 3.7  1.9 2.3 3.7 1.8 2.5 1.6 1.4 2.4

501 miles or more 2.0  1.5 1.7 2.2 1.5 1.6 1.3 .9 1.4

Not reported 1.6  5.0 28.0 2.0 N N 1.6 N N

Not applicable 2.8  N N 10.9 N N 10.4 N N

PRIMARY JURISDICTION

Operated in Canada 29.1  N N 42.7 N N 27.8 N N

Operated in Mexico 44.4  N N 45.4 N N 16.5 N N

Operated within the home base state .6  N N 1.1 N N .8 N N

Operated in states other than the home base

state 1.4  N N 1.6 N N 1.0 N N

Not reported 1.8  N N 2.2 N N 1.7 N N

Not applicable1  2.8 N N 10.9 N N 10.4 N N

MONTHS OPERATED

12 .8  N N .9 N N .7 N N 7 to 11 1.3  N N 1.8 N N 1.5 N N 2 to 6 1.3  N N 2.6 N N 2.4 N N 1 or less 2.1  N N 7.9 N N 7.5 N N Vehicle not used 2.8  N N 10.9 N N 10.4 N N

VEHICLE SIZE

Light 1.9  1.5 1.7 5.4 2.4 4.0 4.4 1.9 4.8

Medium 1.6  1.4 2.3 2.9 2.2 3.9 1.7 1.6 2.5

Lightheavy 1.4  1.7 2.7 2.4 2.9 4.3 1.9 2.3 2.8

Heavyheavy .5  .5 .7 .7 .6 .8 .7 .6 .8

AVERAGE WEIGHT (POUNDS)

Less than 6,001 4.3  4.3 2.5 7.8 7.1 5.1 6.0 5.5 9.5 6,001 to 8,500 2.6  N N 3.8 N N 2.8 N N 8,501 to 10,000 3.4  N N 9.4 N N 7.6 N N 10,001 to 14,000 1.6  2.1 2.7 2.4 3.0 3.8 1.7 2.1 2.7 14,001 to 16,000 3.6  3.0 4.8 6.5 4.4 9.4 4.2 3.4 6.3

16,001 to 19,500 5.1  3.4 6.6 8.7 5.3 11.6 4.3 3.9 6.0

19,501 to 26,000 1.4  1.7 2.7 2.4 2.9 4.3 1.9 2.3 2.8

26,001 to 33,000 2.0  2.1 2.9 3.2 3.6 4.0 2.5 2.7 3.0

33,001 to 40,000 2.5  2.3 3.1 4.3 3.1 3.1 3.7 2.5 2.9

40,001 to 50,000 1.9  1.6 2.0 3.1 2.4 2.0 2.6 1.9 2.1

50,001 to 60,000 1.6  1.7 2.5 3.3 2.4 2.9 2.7 1.7 2.1 60,001 to 80,000 .6  .7 1.1 .9 .9 1.3 .7 .6 .9 80,001 to 100,000 3.4  3.4 7.1 4.5 4.2 7.5 2.9 2.5 3.1 100,001 to 130,000 4.7  5.1 10.2 7.3 6.4 14.5 4.8 3.7 6.2 130,001 or more 9.3  10.3 14.7 10.5 11.7 16.7 5.4 5.6 7.7

TOTAL LENGTH (FEET)

Less than 20.0 1.5  1.4 2.2 2.7 2.2 3.9 1.8 1.7 2.5 20.0 to 27.9 1.0  .9 1.1 2.7 1.6 2.6 2.2 1.3 2.6 28.0 to 35.9 1.4  1.8 2.5 2.1 2.6 3.3 1.5 1.9 2.2 36.0 to 40.9 2.4  3.5 6.9 3.5 4.5 10.6 2.7 3.1 4.7 41.0 to 44.9 5.0  4.8 10.2 4.8 6.2 12.1 4.7 4.4 6.8

45.0 to 49.9 3.2  3.6 5.9 4.7 5.0 8.4 3.5 3.8 5.1

50.0 to 54.9 2.7  2.7 4.0 3.8 3.4 4.8 2.7 2.4 3.3

55.0 to 59.9 2.1  1.7 1.8 2.9 2.0 2.0 1.9 1.3 2.0

60.0 to 64.9 1.7  1.4 1.6 2.4 1.7 1.8 1.5 1.0 1.5

65.0 to 69.9 1.8  1.7 2.2 2.3 1.9 2.5 1.2 1.0 1.5

70.0 to 74.9 2.2  2.5 4.5 2.5 2.8 5.5 1.2 1.4 1.9 75.0 to 79.9 4.0  N N 4.4 N N 1.7 N N 80.0 or more 7.2  N N 11.5 N N 7.5 N N

MILES PER GALLON

Less than 5 1.5  1.5 1.9 2.3 1.9 2.3 1.9 1.6 2.1

5 to 6.9 .8  .8 .8 1.1 .8 1.1 .9 .8 1.2

7 to 8.9 1.5  1.4 1.5 2.5 2.0 2.4 2.1 1.6 2.6

9 to 10.9 2.5  1.8 2.8 4.4 2.4 4.5 2.6 1.9 3.1

11 to 12.9 2.7  2.8 3.9 3.3 3.6 5.0 2.9 2.6 4.0

13 to 14.9 3.5  4.7 5.3 4.7 6.2 6.5 3.3 4.4 5.1

15 or more 3.0  3.3 3.4 4.1 4.6 4.2 2.9 3.0 3.8

15 to 20.9 3.0  3.2 3.5 4.1 4.1 4.3 2.9 2.8 3.7

21 to 24.9 N  29.8 N N 40.8 N N 26.4 N

25 or more N  43.0 N N S S N S S

Not reported 1.4  2.2 4.9 2.3 3.1 9.9 1.6 2.7 4.2

Not applicable1  2.8 N N 10.9 N N 10.4 N N

See footnotes at end of table.

32 United States Vehicle Inventory and Use Survey

U.S. Census Bureau, 2002 Economic Census
Table 3b. Trucks, Truck Miles, and Average Annual Miles for Trucks, Excluding Pickups,

Minivans, Other Light Vans, and Sport UtilitiesMeasures of Sampling Variability:

2002 and 1997Con.

[Estimates are shown as percents and are based on data from the 2002 and 1997 Vehicle Inventory and Use Surveys. Columns A, B, D, E, G, H show estimated coefficients of variation. Columns C, F,

and I show estimated standard errors]

Vehicular and operational characteristics

2002

trucks

1997

trucks

Percent

change

2002 truck

miles

1997 truck

miles

Percent

change

2002 average

miles per

truck

1997 average

miles per

truck

Percent

change

ABCDE FGH I

MODEL YEAR

2003 6.6  N N 7.6 N N 5.2 N N 2002 3.0  N N 3.6 N N 2.5 N N 2001 2.3  N N 2.9 N N 2.0 N N 2000 2.0  N N 2.3 N N 1.8 N N 1999 2.6  N N 3.4 N N 1.8 N N

1998 2.8  S S 2.9 S S 2.2 S S 1997 3.3  2.7 4.5 3.7 2.5 2.9 2.1 2.2 1.8 1996 2.5  2.6 2.8 3.0 2.3 1.6 2.2 2.1 1.6 1995 2.1  2.2 2.4 2.8 2.1 1.5 2.1 1.7 1.5 1994 2.5  2.5 2.7 3.1 2.4 1.5 2.3 1.9 1.5 1993 2.7  2.6 3.0 3.8 2.8 1.8 3.0 2.1 1.8 Pre1993 .9  .5 .6 1.8 .9 .7 1.4 .8 .9

VEHICLE ACQUISITION

New 1.0  .8 1.4 1.1 .9 1.5 .8 .8 1.2

Used .6  .7 .9 1.2 1.2 1.6 1.1 1.0 1.5

Not reported 2.3  1.9 2.0 2.7 1.8 1.4 2.1 1.5 1.6

LEASE CHARACTERISTICS

Leased 1.4  N N 1.7 N N 1.2 N N

Lessee 2.0  N N 2.5 N N 1.9 N N

Vehicle only 2.1  N N 2.7 N N 2.0 N N

Vehicle with driver 6.4  N N 6.8 N N 3.0 N N

Not reported 25.2  N N 27.1 N N 23.4 N N

Lessor 2.2  N N 2.5 N N 1.7 N N

Vehicle only 2.4  N N 2.7 N N 1.9 N N

Vehicle with driver 5.7  N N 6.9 N N 3.5 N N

Not reported 28.1  N N 29.8 N N 24.6 N N

Not reported 9.0  N N 11.1 N N 9.0 N N

Not leased .8  N N 1.2 N N .9 N N

Not reported .9  N N 1.5 N N 1.3 N N

Length of leasing agreement:

Leased 1.4  N N 1.7 N N 1.2 N N

1 to 11 months 5.3  N N 5.9 N N 4.3 N N

12 months or more 1.5  N N 1.8 N N 1.3 N N Not reported 11.1  N N 12.4 N N 10.7 N N

Provisions of lease: Financing only 2.0  N N 2.4 N N 1.8 N N Full maintenance 2.5  N N 2.8 N N 1.9 N N Payment of taxes 2.4  N N 2.5 N N 1.7 N N Obtaining licenses and permits 2.3  N N 2.5 N N 1.7 N N Recordkeeping 3.3  N N 3.5 N N 2.4 N N Fuel contract 4.9  N N 5.2 N N 3.5 N N

PRIMARY OPERATOR

CLASSIFICATION

Private .5  N N 1.0 N N .9 N N

Motor carrier 1.9  N N 1.4 N N 1.3 N N

Owner operator 1.8  N N 2.2 N N 1.5 N N

Rental 2.9  N N 4.7 N N 2.6 N N

Personal transportation 9.5  N N 8.7 N N 8.9 N N

Not applicable1  2.8 N N 10.9 N N 10.4 N N

Forhire characteristics:

Type of carrier:

Contract 2.8  N N 1.8 N N 1.9 N N

Common 1.5  N N 1.9 N N 1.4 N N

Not reported 3.6  N N 3.8 N N 2.9 N N

Not applicable3  .4 N N 1.1 N N .9 N N

Type of service:

Truckload 1.0  1.2 2.2 1.2 1.3 2.1 .9 .8 1.0

Lessthan truckload 4.8  2.5 6.7 3.9 2.5 4.0 2.6 1.9 2.3

Not reported 3.6  N N 3.9 N N 3.0 N N

Not applicable3  .4 N N 1.1 N N .9 N N

Source of hauls:

Shippers or receivers 2.0  N N 1.4 N N 1.4 N N

Brokers 3.8  N N 4.1 N N 2.6 N N

Centralized markets or exchanges 7.8  N N 10.9 N N 6.6 N N

Other N  NNNNNNN N

Not reported 2.5  N N 2.9 N N 2.2 N N

Not applicable3  .4 N N 1.1 N N .9 N N

HAZARDOUS MATERIALS CARRIED4

Carrying hazardous materials 1.9  1.8 2.4 2.4 2.0 2.9 1.6 1.5 2.3

Not carrying hazardous materials .6  .4 .6 .9 .7 .9 .7 .6 .9

Not reported 1.5  1.7 2.0 2.2 2.2 2.8 1.8 1.8 2.7 Not applicable5  2.0 N N 4.5 N N 3.5 N N

See footnotes at end of table.

Vehicle Inventory and Use Survey United States 33

U.S. Census Bureau, 2002 Economic Census
Table 3b. Trucks, Truck Miles, and Average Annual Miles for Trucks, Excluding Pickups,

Minivans, Other Light Vans, and Sport UtilitiesMeasures of Sampling Variability:

2002 and 1997Con.

[Estimates are shown as percents and are based on data from the 2002 and 1997 Vehicle Inventory and Use Surveys. Columns A, B, D, E, G, H show estimated coefficients of variation. Columns C, F,

and I show estimated standard errors]

Vehicular and operational characteristics

2002

trucks

1997

trucks

Percent

change

2002 truck

miles

1997 truck

miles

Percent

change

2002 average

miles per

truck

1997 average

miles per

truck

Percent

change

ABCDE FGH I

EQUIPMENT TYPE

Aerial work platform/bucket 3.9  N N 5.0 N N 3.3 N N Air bag(s) (safety device only) 2.0  2.0 3.9 2.7 1.7 2.7 1.7 1.6 1.4 Air compressor (except air brakes) 2.0  N N 2.4 N N 1.9 N N Airconditioning .6  .8 1.2 .8 .7 1.1 .7 .7 .8 Air springs 1.1  N N 1.4 N N .9 N N

Antilock brake system 1.0  1.7 4.1 1.2 1.6 4.0 .9 1.4 1.6

Collision warning system 5.1  N N 6.5 N N 4.7 N N

Computerized drive train control unit 2.8  N N 3.3 N N 2.3 N N

Crane 3.9  N N 5.4 N N 3.7 N N

Electronic vehicle identification device 3.1  2.9 4.2 3.4 2.8 4.4 1.7 1.9 2.6

Engine retarder/brake .8  1.0 1.5 1.2 1.1 1.7 .8 .8 1.1

Frontwheel drive N  SSNSSNS S

Hoist 1.4  N N 2.5 N N 2.1 N N

Idlereducing technology (portable auxiliary pack,

electrification, etc.) 4.4  N N 3.6 N N 2.6 N N

Internet access 9.3  N N 8.3 N N 6.5 N N

Lift gate 2.5  N N 3.3 N N 2.2 N N

Mounting bar for snowplow 4.5  N N 6.3 N N 4.5 N N

Navigational system 8.1  3.9 2.9 8.4 4.3 2.7 5.0 2.6 5.0

Power takeoff .9  N N 1.5 N N 1.3 N N

Radial tires .7  .6 .8 .9 .7 .9 .7 .6 .9

Reflective material in addition to those required

by law 1.6  1.1 1.2 2.1 1.2 1.2 1.5 1.1 1.4 Road speed governor 1.4  .9 1.6 1.3 1.0 1.5 1.0 .8 1.3 Toolbox 1.1  N N 1.6 N N 1.3 N N Trip recorder or onboard computer with

communication capabilities 5.0  N N 2.8 N N 3.4 N N Trip recorder or onboard computer without

communication capabilities 2.6  N N 3.2 N N 2.2 N N

Vehicle control aids for handicapped drivers N  NNNNNNN N Wheelchair lift N  NNNNNNN N Winch 2.8  N N 4.1 N N 3.4 N N

Transmission type: Automatic 1.1  N N 1.7 N N 1.4 N N

Manual .6  N N .9 N N .7 N N Semiautomated manual 7.2  N N 8.9 N N 7.1 N N Automated manual 8.5  N N 10.7 N N 6.2 N N Not reported 2.3  N N 2.6 N N 2.0 N N

Braking system:

Hydraulic (standard) 1.0  1.3 2.0 2.9 2.2 4.9 2.4 1.8 3.3 Hydraulic with power assist 1.7  1.2 1.7 3.2 1.9 2.9 2.0 1.4 2.3 Air .5  .5 .7 .8 .7 .9 .7 .6 .9 Other N  6.3 N N 8.0 N N 5.7 N Not reported 2.7  N N 2.5 N N 2.4 N N

FUEL TYPE AND ENGINE SIZE

Fuel type:

Gasoline 1.1  .9 1.1 3.4 1.9 3.1 3.0 1.5 3.4

Diesel .6  .5 .9 .7 .6 .9 .6 .6 .7

Natural gas 31.8  N N 36.9 N N 22.2 N N

Propane 7.9  N N 10.0 N N 6.9 N N

Alcohol fuels 26.1  NNSNNSN N

Electricity S  NNSNNSN N

Combination 12.4  N N 19.2 N N 13.5 N N

Other N  NNNNNNN N

Not reported 15.5  N N 20.3 N N 15.2 N N

Not applicable1  2.8 N N 10.9 N N 10.4 N N

Cylinders6:

4 cylinders 2.2  3.6 6.2 2.9 3.7 6.2 1.9 2.6 2.9

6 cylinders .6  .7 1.0 .8 .7 1.0 .7 .6 .8

8 cylinders 1.1  1.0 1.4 2.3 1.7 2.5 1.6 1.3 1.9

Other 1.6  1.2 1.1 3.2 2.3 1.4 2.9 2.1 2.2

Cubic inch displacement6:

Gasoline fuel 1.1  .9 1.1 3.4 1.9 3.1 3.0 1.5 3.4

Less than 200 11.9  15.1 18.3 15.2 18.3 18.7 8.5 10.4 11.1

200 to 299 11.9  6.9 10.1 34.2 8.9 34.0 23.6 5.1 31.7

300 to 349 9.1  8.5 14.7 7.3 17.3 26.7 8.5 13.6 19.2

350 to 399 1.7  1.8 2.1 2.5 2.7 2.9 2.0 2.1 2.6

400 or more 2.4  2.8 3.5 3.5 4.0 4.4 2.4 2.8 3.1

Not available 2.1  1.7 1.4 5.1 3.5 2.6 4.5 3.0 4.3

Diesel fuel .6  .5 .9 .7 .6 .9 .6 .6 .7

Less than 400 1.7  2.4 3.4 2.2 3.0 3.7 1.4 2.0 2.1

400 to 599 1.7  1.6 3.4 2.4 2.2 4.1 1.3 1.5 1.7

600 to 799 .9  1.1 1.7 1.3 1.3 2.1 .9 .9 1.2

800 or more 1.1  .9 1.1 1.7 1.2 1.4 1.1 .8 1.1

Not available 1.6  1.4 1.4 2.7 2.1 2.7 2.2 1.7 3.4

Other fuel 6.6  7.6 9.7 8.9 9.3 12.1 6.1 6.7 8.9

Less than 400 11.6  12.2 13.0 16.1 13.9 13.3 11.0 8.7 11.4

400 or more 9.1  11.1 21.6 11.3 14.3 25.0 6.9 9.6 10.8

Not available 17.3  17.3 14.1 28.4 22.3 15.9 21.4 14.4 19.7

Not reported 15.5  N N 20.3 N N 15.2 N N

Not applicable1  2.8 N N 10.9 N N 10.4 N N

See footnotes at end of table.

34 United States Vehicle Inventory and Use Survey

U.S. Census Bureau, 2002 Economic Census
Table 3b. Trucks, Truck Miles, and Average Annual Miles for Trucks, Excluding Pickups,

Minivans, Other Light Vans, and Sport UtilitiesMeasures of Sampling Variability:

2002 and 1997Con.

[Estimates are shown as percents and are based on data from the 2002 and 1997 Vehicle Inventory and Use Surveys. Columns A, B, D, E, G, H show estimated coefficients of variation. Columns C, F,

and I show estimated standard errors]

Vehicular and operational characteristics

2002

trucks

1997

trucks

Percent

change

2002 truck

miles

1997 truck

miles

Percent

change

2002 average

miles per

truck

1997 average

miles per

truck

Percent

change

ABCDE FGH I

REFUELING LOCATION

Gas station .7  N N 1.7 N N 1.4 N N

Truck stop 1.0  N N 1.3 N N 1.0 N N

Own facility (including home, farm, ranch, onsite

by mobile supplier, etc.) 1.3  N N 1.6 N N 1.2 N N

Other company’s/contractor’s facility not open to

the public 3.4  N N 4.9 N N 3.8 N N

Other 41.8  N N 45.6 N N 42.6 N N

Not reported 2.9  N N 3.6 N N 2.5 N N

Not applicable1  2.8 N N 10.9 N N 10.4 N N

MAINTENANCE

General maintenance performed by:

None performed 7.6  10.6 37.5 9.5 14.4 32.9 9.7 16.3 12.6

Companyowned maintenance facility 1.0  .8 1.4 1.1 .9 1.6 .8 .8 1.1

General repair business or private mechanic .9  1.2 1.9 1.3 1.5 2.5 1.1 1.3 1.7

Dealership service department 1.6  2.0 2.7 2.1 2.0 3.4 1.6 1.7 2.6

Leasing company 4.5  4.6 4.4 5.1 4.3 3.9 3.7 2.8 3.9

Individual not employed/paid by any

maintenance type facility 1.1  1.0 .8 2.0 1.4 1.2 1.8 1.3 1.9 Other N  8.0 N N 9.5 N N 7.7 N

Not reported 3.0  2.0 1.8 3.5 2.5 2.1 2.5 2.0 3.2

Not applicable1  2.8 N N 10.9 N N 10.4 N N

Extensive repairs performed by:

None performed .6  4.0 108.4 1.0 5.7 213.1 .8 5.2 7.3 Companyowned maintenance facility 2.1  1.3 .7 2.9 1.4 .9 2.3 1.2 2.5 General repair business or private mechanic 1.9  1.3 .8 2.6 1.6 1.5 2.0 1.3 3.3 Dealership service department 2.5  1.4 .8 3.1 1.5 1.0 2.3 1.2 2.7 Leasing company 11.4  6.0 1.9 14.5 5.5 1.9 10.7 3.5 9.1

Component distributorship (engine,

transmission, body, etc.) 6.1  2.4 .9 6.5 2.5 .9 5.0 2.0 5.0

Individual not employed/paid by any repair type

facility 3.0  2.4 1.4 4.7 3.6 2.6 4.1 3.2 6.5

Other N  8.9 N N 12.4 N N 10.2 N

Not reported 20.2  .9 .1 26.0 1.3 – 15.2 1.2 10.1

Not applicable1  2.8 N N 10.9 N N 10.4 N N

TRUCK TYPE AND AXLE

ARRANGEMENT

Singleunit trucks and trucktractors without

trailer .6  .5 .8 1.4 1.0 1.8 1.1 .9 1.4

2 axles .7  .6 .9 1.7 1.3 2.1 1.3 1.1 1.7

3 axles 1.2  1.4 1.8 2.1 2.3 2.9 1.8 1.8 2.4

4 axles 2.4  2.5 3.2 3.1 3.1 3.4 2.1 2.0 2.5

5 axles or more 5.1  N N 6.5 N N 3.9 N N

Not reported 10.1  N N 28.7 N N 27.4 N N

Combinations .6  .6 .8 .7 .7 .9 .7 .6 .9

Singleunit trucks with trailer 3.0  3.0 4.1 4.0 4.1 4.6 3.2 3.1 3.7

3 axles 6.3  8.7 13.4 9.4 12.1 21.6 6.7 8.4 12.1

4 axles 4.8  4.2 6.0 6.4 6.5 7.2 5.0 4.7 5.8

5 axles or more 4.2  4.3 4.2 6.1 5.9 5.0 4.9 4.4 5.5

Not reported 13.3  N N 20.3 N N 12.5 N N

Trucktractors with single trailer .5  .6 .7 .8 .7 1.0 .7 .6 .9

3 axles 4.8  4.2 5.0 6.1 5.7 5.4 4.2 4.0 4.8

4 axles 3.3  2.5 2.5 4.4 3.0 2.8 3.1 2.1 3.2

5 axles or more .6  .6 .8 .9 .8 1.1 .7 .6 .9

Not reported 3.3  N N 4.2 N N 2.6 N N

Trucktractors with double trailers 4.3  3.4 3.6 5.3 3.8 4.3 2.8 2.3 3.6

5 axles 6.3  5.1 5.6 7.0 5.6 6.8 3.6 3.4 5.4

6 axles 11.1  7.0 5.9 14.1 7.7 6.7 7.8 4.3 8.3

7 axles 11.9  8.3 7.0 16.9 9.3 7.7 8.2 5.2 8.1

8 axles or more 7.7  7.4 10.3 10.8 7.7 12.4 6.4 4.0 7.3

Not reported 22.1  N N 27.7 N N 13.6 N N

Trucktractors with triple trailers 28.1  12.7 10.6 33.2 13.2 20.1 12.4 5.0 21.9

7 axles 34.5  S S 36.8 S S 7.8 S S

8 axles S  15.5 S S 16.2 S S 5.9 S

9 axles S  25.4 S S 24.2 S S 10.5 S

10 axles or more S  SSSSSSS S

Not reported S  NNSNNSN N

Driving axles:

1 .6  .5 .8 1.5 1.1 1.6 1.2 .9 1.4

2 .5  .6 .8 .7 .8 1.1 .7 .7 .9

3 or more 5.3  3.9 2.4 7.5 5.0 .9 5.4 3.5 1.8

Not reported 8.0  N N 16.0 N N 13.9 N N

Total liftable axles and locations:

None .4  .9 2.7 .7 1.1 3.2 .6 1.0 1.0

1 2.0  2.9 4.4 2.9 3.3 5.4 2.2 2.6 3.3

Forward of the drive axle 2.4  N N 3.6 N N 2.6 N N

Below the chassis 5.2  N N 8.3 N N 6.9 N N

Beyond the chassis 8.2  N N 11.0 N N 7.1 N N

Not reported 5.7  N N 7.7 N N 5.4 N N

2 or more 5.2  9.0 8.5 6.0 7.7 8.6 3.9 8.4 10.0

Forward of the drive axle 5.6  N N 6.2 N N 4.2 N N

Below the chassis 7.9  N N 10.4 N N 6.7 N N

Beyond the chassis 8.4  N N 9.9 N N 5.4 N N

Not reported 22.5  N N 27.8 N N 16.0 N N

Not reported 7.5  N N 9.3 N N 8.6 N N

See footnotes at end of table.

Vehicle Inventory and Use Survey United States 35

U.S. Census Bureau, 2002 Economic Census
Table 3b. Trucks, Truck Miles, and Average Annual Miles for Trucks, Excluding Pickups,

Minivans, Other Light Vans, and Sport UtilitiesMeasures of Sampling Variability:

2002 and 1997Con.

[Estimates are shown as percents and are based on data from the 2002 and 1997 Vehicle Inventory and Use Surveys. Columns A, B, D, E, G, H show estimated coefficients of variation. Columns C, F,

and I show estimated standard errors]

Vehicular and operational characteristics

2002

trucks

1997

trucks

Percent

change

2002 truck

miles

1997 truck

miles

Percent

change

2002 average

miles per

truck

1997 average

miles per

truck

Percent

change

ABCDE FGH I

TRUCK TYPE AND AXLE

ARRANGEMENTCon.

Total liftable axles and number of braking axles:

None .4  .9 2.7 .7 1.1 3.2 .6 1.0 1.0

1 2.0  2.9 4.4 2.9 3.3 5.4 2.2 2.6 3.3

0 braking 5.3  N N 8.0 N N 6.3 N N

1 braking 2.2  N N 3.2 N N 2.4 N N

Not reported 10.1  N N 15.3 N N 11.5 N N

2 or more 5.2  9.0 8.5 6.0 7.7 8.6 3.9 8.4 10.0

0 braking 23.0  N N 28.2 N N 18.7 N N

1 braking 25.0  N N 30.4 N N 18.6 N N

2 or more braking 5.7  N N 6.5 N N 4.2 N N

Not reported 23.4  N N 30.7 N N 16.8 N N

Not reported 7.5  N N 9.3 N N 8.6 N N

CAB TYPE

Conventional cab .5  .5 .7 .8 .7 1.1 .6 .6 .8

With sleeper 1.1  N N 1.4 N N .8 N N

Without sleeper .5  N N 1.2 N N .9 N N

Not reported 3.6  N N 4.4 N N 2.2 N N

Cab over engine 1.2  1.6 1.7 2.3 2.0 2.7 1.8 1.6 2.6

With sleeper 3.2  N N 4.7 N N 2.8 N N

Without sleeper 1.4  N N 2.1 N N 1.6 N N

Not reported 10.1  N N 12.4 N N 5.3 N N

Cab forward of engine 9.5  3.8 1.0 13.8 4.6 1.2 7.4 3.2 7.2

Cab beside engine 12.3  8.6 3.7 17.0 12.1 4.0 10.6 8.6 10.5

Not reported 34.2  N N 25.9 N N 26.5 N N

N Not available. S Estimate does not meet publication standards because of high sampling variability or poor response quality. V Represents an estimate of less than 50 vehicles, 50,000

miles, or 0.05 percent.

1Vehicles not in use. When the respondent had partialyear ownership of the vehicle, annual miles were adjusted to reflect miles traveled when not owned by the respondent. 2Trucktractors not in use. 3Vehicles that are private, rental, or used for personal transportation; and vehicles not in use.

4Distributed miles data are available in Table 8.

5Vehicles that are rental or used for personal tranportation; and vehicles not in use.

6Data were derived from administrative records.

36 United States Vehicle Inventory and Use Survey

U.S. Census Bureau, 2002 Economic Census
Table 4. Trucks by Vehicle Size: 2002

[Thousands. Estimates are based on data from the 2002 Vehicle Inventory and Use Survey. Because of rounding, estimates may not be additive]

Vehicular and operational characteristics

Vehicle size

Total Light Medium Lightheavy Heavyheavy

Coefficient of

variation of total

(percent)

Total 85 174.8 79 759.6 1 914.0 910.3 2 590.9 X

Coefficient of variation (percent) .2  .2 3.3 2.2 .5 X

BUSINESS1

Forhire transportation or warehousing 1 280.2  285.7 164.0 92.3 738.3 3.4

Vehicle leasing or rental  859.2 576.6 98.5 66.9 117.2 7.8

Agriculture, forestry, fishing, or hunting 2 239.9  1 434.0 227.1 177.1 401.7 3.7

Mining 177.6 91.1 15.7 9.0 61.8 11.4

Utilities  679.3 495.6 76.2 38.6 68.8 8.3

Construction  4 541.5 3 646.8 324.9 142.0 427.8 3.3

Manufacturing  782.9 590.7 40.9 30.7 120.6 8.5

Wholesale trade  735.9 483.5 74.1 51.9 126.5 7.5

Retail trade  1 530.5 1 221.9 107.9 69.2 131.5 5.7

Information services 376.6 324.2 42.0 4.4 6.1 14.2

Waste management, landscaping, or administrative/support services 743.2  467.2 101.4 41.8 132.7 7.7

Arts, entertainment, or recreation services 187.1  166.3 9.9 4.3 6.5 17.6

Accommodation or food services 284.3  224.0 21.6 10.8 27.9 12.8

Other services 2 127.3 2 017.6 71.4 18.5 19.8 5.3

Personal transportation  65 343.0 64 948.5 370.0 S 3.4 .5

Not reported  1 308.2 991.9 114.0 71.1 131.3 6.6

Not applicable2  1 978.0 1 794.1 54.3 60.8 68.8 5.7

BODY TYPE

Singleunit trucks  83 752.9 79 759.6 1 914.0 885.6 1 193.6 .2

Pickup 37 991.1 37 354.3 608.0 S S .3

Minivan 12 207.3 12 206.4 S V V 2.0

Other light vans  5 251.4 5 209.5 41.9 V V 3.3

Sport utility 24 204.4 24 181.9 22.5 V V 1.1

Armored  11.3 S 2.0 3.6 1.3 38.4

Beverage  41.6 .6 4.4 13.9 22.7 7.1

Concrete mixer  77.0 S S .1 76.0 3.2

Concrete pumper  5.9 V S S 5.4 12.8

Crane  17.6 S 2.2 5.5 9.2 9.5

Curtainside  3.6 S .8 .5 2.1 15.8

Dump  727.0 71.4 160.4 145.3 349.9 1.5

Flatbed, stake, or platform  948.1 236.4 294.1 214.5 203.2 1.5

Low boy  3.6 S S 1.4 1.8 18.6

Pole, logging, pulpwood, or pipe 18.1  S 1.0 2.7 14.4 6.5

Service, utility  262.1 65.5 98.2 50.0 48.5 2.8

Service, other  221.8 86.2 92.8 28.8 14.0 3.1

Street sweeper  6.4 .9 4.2 .6 .6 16.0

Tank, dry bulk  26.1 S 2.2 6.8 16.9 6.6

Tank, liquids or gases  166.7 2.4 17.2 37.2 109.8 3.0

Tow/Wrecker 127.8 21.3 53.8 34.6 18.1 4.8

Trash, garbage, or recycling 96.0 .8 6.0 6.8 82.3 3.3

Vacuum  14.7 S 1.6 1.8 10.9 8.9

Van, basic enclosed 583.1 112.5 223.0 173.2 74.5 2.0 Van, insulated nonrefrigerated 18.9  3.0 7.3 5.3 3.4 9.7 Van, insulated refrigerated  86.3 4.5 22.7 30.2 28.8 4.8

Van, open top  151.7 4.2 18.8 42.3 86.4 2.6 Van, step, walkin, or multistop 413.1  162.8 198.6 46.6 5.1 4.2 Van, other  69.0 28.6 28.0 8.4 4.0 5.5 Other  1.1 S S S .7 33.1

Trucktractors  1 421.9 V V 24.7 1 397.2 .5 Automobile carrier  12.8 V V S 12.7 9.7

Beverage  33.6 V V .7 32.9 6.7 Curtainside  3.5 V V S 3.5 16.1

Dump  129.2 V V S 128.9 2.6

Flatbed, stake, or platform  193.5 V V 3.3 190.2 2.3

Livestock  15.3 V V S 15.1 8.7

Low boy  57.7 V V .4 57.2 3.8 Mobile home toter  4.9 V V S 4.6 13.5

Open top  64.0 V V S 63.8 3.2

Pole, logging, pulpwood, or pipe 21.7  V V S 21.7 5.5

Tank, dry bulk  28.3 V V V 28.3 6.1 Tank, liquids or gases  80.6 V V S 80.1 3.7

Van, basic enclosed 592.6 V V 5.3 587.3 1.2 Van, dropframe  14.0 V V S 13.9 9.8

Van, insulated nonrefrigerated 14.9  V V V 14.9 7.7

Van, insulated refrigerated  120.4 V V S 120.0 2.9

Other  1.3 V V S 1.0 22.0

Not applicable3  33.7 V V 12.4 21.3 5.8

ANNUAL MILES

Less than 5,000  14 071.6 12 815.4 438.9 316.0 501.2 1.8 5,000 to 9,999 17 093.3 16 383.0 330.2 120.0 260.1 1.7 10,000 to 19,999  37 362.8 36 197.6 621.7 182.5 361.0 1.0 20,000 to 29,999  9 349.8 8 686.0 280.3 125.7 257.7 2.5 30,000 to 49,999  3 662.6 3 145.3 144.0 74.2 299.1 3.8

50,000 to 74,999  961.5 650.3 34.3 21.2 255.7 6.5 75,000 or more  695.2 87.7 10.3 10.0 587.2 3.1 Not applicable2  1 978.0 1 794.1 54.3 60.8 68.8 5.7

PRIMARY RANGE OF OPERATION

Offtheroad 1 040.8 850.1 64.3 32.9 93.4 7.2

50 miles or less 58 076.1 55 347.5 1 086.7 524.4 1 117.4 .6

51 to 100 miles  7 411.7 6 707.6 262.3 89.3 352.5 2.7

101 to 200 miles  2 136.3 1 870.7 72.3 26.1 167.3 5.2

201 to 500 miles  1 142.6 863.9 62.0 34.0 182.8 6.4

501 miles or more  1 411.2 1 081.6 65.8 15.8 248.1 6.3

Not reported  11 977.9 11 244.1 246.3 127.0 360.6 2.1

Not applicable2  1 978.0 1 794.1 54.3 60.8 68.8 5.7

See footnotes at end of table.

Vehicle Inventory and Use Survey United States 37

U.S. Census Bureau, 2002 Economic Census
Table 4. Trucks by Vehicle Size: 2002Con.

[Thousands. Estimates are based on data from the 2002 Vehicle Inventory and Use Survey. Because of rounding, estimates may not be additive]

Vehicular and operational characteristics

Vehicle size

Total Light Medium Lightheavy Heavyheavy

Coefficient of

variation of total

(percent)

PRIMARY JURISDICTION

Operated in Canada 18.9 S S S .5 43.0

Operated in Mexico  S S S S .9 S

Operated within the home base state 71 871.1  67 760.3 1 571.3 705.4 1 834.1 .4

Operated in states other than the home base state 1 902.8  1 401.8 72.5 26.3 402.1 4.7

Not reported  9 360.3 8 745.3 214.7 115.9 284.4 2.4

Not applicable2  1 978.0 1 794.1 54.3 60.8 68.8 5.7

MONTHS OPERATED

12  59 689.6 56 504.2 1 247.1 472.3 1 465.9 .6 7 to 11  11 537.7 10 624.5 289.0 128.9 495.2 2.1 2 to 6  9 585.8 8 747.6 228.6 168.4 441.2 2.3 1 or less  2 383.7 2 089.2 95.0 79.9 119.6 4.5 Vehicle not used 1 978.0 1 794.1 54.3 60.8 68.8 5.7

AVERAGE WEIGHT (POUNDS)

Less than 6,001  62 617.3 62 617.3 N N N .5

6,001 to 8,500 14 351.6 14 351.6 N N N 1.9

8,501 to 10,000 2 790.7 2 790.7 N N N 4.4

10,001 to 14,000  1 142.1 N 1 142.1 N N 4.4

14,001 to 16,000  395.9 N 395.9 N N 6.6

16,001 to 19,500  376.1 N 376.1 N N 7.7

19,501 to 26,000  910.3 N N 910.3 N 2.2

26,001 to 33,000  436.8 N N N 436.8 2.1

33,001 to 40,000  228.8 N N N 228.8 2.5

40,001 to 50,000  318.4 N N N 318.4 1.9

50,001 to 60,000  326.6 N N N 326.6 1.6

60,001 to 80,000  1 178.7 N N N 1 178.7 .6

80,001 to 100,000  68.9 N N N 68.9 3.4

100,001 to 130,000  26.4 N N N 26.4 4.7

130,001 or more  6.3 N N N 6.3 9.3

TOTAL LENGTH (FEET)

Less than 20.0  72 155.3 70 977.2 721.0 255.8 201.3 .4

20.0 to 27.9  7 634.7 6 198.6 579.7 368.3 488.1 2.5

28.0 to 35.9  2 680.7 1 907.9 262.9 170.6 339.3 3.9

36.0 to 40.9  866.4 532.0 143.0 49.5 141.9 7.7

41.0 to 44.9  261.1 60.6 105.1 20.0 75.4 12.3

45.0 to 49.9  241.7 65.8 53.2 S 95.9 13.5

50.0 to 54.9  201.8 S 47.3 9.9 131.9 11.3

55.0 to 59.9  233.0 S 1.3 3.9 223.0 2.9

60.0 to 64.9  301.6 S S 2.7 298.7 1.7

65.0 to 69.9  273.3 V S 1.1 271.9 1.8

70.0 to 74.9  217.2 V S 1.2 216.0 2.2

75.0 to 79.9  92.1 V V S 92.0 4.0

80.0 or more  15.7 V V S 15.5 7.2

MILES PER GALLON

Less than 5  481.4 21.8 36.7 54.8 368.2 1.5

5 to 6.9  1 625.8 242.6 107.9 132.2 1 143.1 2.2

7 to 8.9  1 364.3 662.3 217.4 163.7 320.9 3.7

9 to 10.9 4 239.4 3 545.9 408.5 149.7 135.4 3.5

11 to 12.9 6 047.0 5 619.4 317.4 64.9 45.3 3.1

13 to 14.9 7 031.8 6 848.2 152.4 18.2 13.0 2.9

15 or more  48 486.7 48 114.0 318.9 35.8 18.0 .8

15 to 20.9 38 065.4 37 707.0 304.6 35.8 18.0 1.0

21 to 24.9 6 623.6 6 619.0 S V V 3.0

25 or more  3 797.7 3 788.0 S V V 4.3

Not reported  13 920.3 12 911.3 300.5 230.3 478.1 1.9

Not applicable2  1 978.0 1 794.1 54.3 60.8 68.8 5.7

MODEL YEAR

2003  94.0 53.6 1.5 3.3 35.6 26.9

2002  4 982.6 4 782.7 65.6 27.8 106.5 3.5

2001  7 456.4 7 112.4 144.4 42.7 156.9 2.9

2000  8 179.5 7 724.0 145.3 59.7 250.5 2.7

1999  7 016.5 6 555.6 211.8 55.4 193.7 2.9

1998  6 363.2 6 051.1 114.0 38.8 159.3 3.1

1997  5 727.0 5 435.2 122.5 39.1 130.1 3.2

1996  4 757.5 4 489.7 85.6 49.4 132.8 3.4

1995  5 247.7 4 930.3 111.0 44.7 161.7 3.3

1994  4 479.4 4 263.4 70.3 27.8 117.9 3.5

1993  4 078.2 3 903.9 51.3 26.9 96.2 4.0

Pre1993  26 792.8 24 457.7 790.7 494.7 1 049.7 1.2

VEHICLE ACQUISITION

New 37 979.5 35 420.1 995.3 384.4 1 179.7 1.0

Used  41 378.6 38 919.9 791.5 464.8 1 202.4 .9

Not reported  5 816.7 5 419.6 127.2 61.2 208.7 3.1

LEASE CHARACTERISTICS

Leased  4 898.9 4 235.8 126.9 98.4 437.8 3.4 Lessee  3 871.4 3 525.0 83.3 43.0 220.1 4.0 Vehicle only 332.7 26.4 64.4 42.8 199.0 2.1 Vehicle with driver  19.5 S V S 19.4 6.4

Not reported  2.3 V S S 1.7 25.2

Not applicable4  3 516.8 3 498.5 S V V 4.4 Lessor 653.8 351.9 41.9 53.1 206.9 8.1 Vehicle only 267.3 9.5 34.9 50.9 172.0 2.4 Vehicle with driver  35.3 S S 1.0 33.3 5.7

Not reported  3.3 S S S 1.6 28.1

Not applicable4  348.0 341.7 S V V 15.1

Not reported  373.6 358.9 1.7 2.2 10.7 12.5

Not leased  45 730.1 42 680.8 1 126.5 502.8 1 420.2 .8

Not reported  34 545.8 32 843.0 660.6 309.2 732.9 1.1

See footnotes at end of table.

38 United States Vehicle Inventory and Use Survey

U.S. Census Bureau, 2002 Economic Census
Table 4. Trucks by Vehicle Size: 2002Con.

[Thousands. Estimates are based on data from the 2002 Vehicle Inventory and Use Survey. Because of rounding, estimates may not be additive]

Vehicular and operational characteristics

Vehicle size

Total Light Medium Lightheavy Heavyheavy

Coefficient of

variation of total

(percent)

LEASE CHARACTERISTICSCon.

Length of leasing agreement:

Leased  4 898.9 4 235.8 126.9 98.4 437.8 3.4

1 to 11 months  43.0 1.8 3.6 5.6 32.0 5.3

12 months or more 618.8 35.1 96.6 90.7 396.5 1.5

Not reported  13.7 S 2.2 2.1 9.2 11.1

Not applicable4  4 223.3 4 198.7 24.6 V V 4.0

Provisions of lease5:

Financing only 408.9 31.5 74.2 60.2 243.0 2.0

Full maintenance  232.7 6.4 27.8 46.8 151.7 2.5

Payment of taxes  267.1 10.6 37.8 49.0 169.7 2.4

Obtaining licenses and permits 267.7  8.7 34.1 48.4 176.6 2.3

Recordkeeping  148.0 5.0 19.5 26.4 97.1 3.3

Fuel contract  72.4 2.5 9.7 11.7 48.4 4.9

PRIMARY OPERATOR CLASSIFICATION

Private  15 268.1 12 012.3 1 200.0 641.3 1 414.5 1.7 Motor carrier  1 160.2 222.8 144.1 91.1 702.1 3.5 Owner operator 545.7 202.9 43.1 26.0 273.8 6.2 Rental 879.3 578.7 102.3 70.1 128.2 7.6 Personal transportation  65 343.5 64 948.7 370.3 S 3.4 .5

Not applicable2  1 978.0 1 794.1 54.3 60.8 68.8 5.7

Forhire characteristics:

Type of carrier:

Contract  602.4 13.2 67.9 46.2 475.0 2.8 Common  536.4 22.4 79.2 44.0 390.8 1.5 Not reported  193.3 23.1 33.3 26.8 110.1 3.6 Not applicable6  83 842.7 79 700.9 1 733.6 793.2 1 614.9 .2 Type of service: Truckload 792.6 15.3 45.9 35.8 695.6 1.0 Lessthan truckload  350.1 20.4 101.3 53.5 175.0 4.8 Not reported  189.3 22.9 33.3 27.8 105.3 3.6 Not applicable6  83 842.8 79 700.9 1 733.6 793.2 1 615.0 .2 Source of hauls:

Shippers or receivers 899.2 26.8 121.6 68.4 682.3 2.0 Brokers 92.1 .8 5.5 4.6 81.2 3.8 Centralized markets or exchanges 24.1  .8 2.9 3.6 16.8 7.8 Other  V VVVV N Not reported  316.7 30.2 50.4 40.5 195.6 2.5 Not applicable6  83 842.7 79 700.9 1 733.6 793.2 1 614.9 .2

HAZARDOUS MATERIALS CARRIED7

Carrying hazardous materials  366.1 8.3 19.3 30.6 307.9 1.9

Not carrying hazardous materials 3 873.5  580.0 883.8 602.6 1 807.1 .6

Not reported  681.1 125.6 166.9 116.7 271.9 1.5

Not applicable8  80 254.0 79 045.7 844.0 160.4 204.0 .2

EQUIPMENT TYPE5 9

Aerial work platform/bucket  166.0 45.0 50.5 35.5 35.0 8.8 Air bag(s) (safety device only) 47 019.2  46 171.1 537.6 71.4 239.1 .8 Air compressor (except air brakes) 353.0  16.5 47.1 38.6 250.8 2.0 Airconditioning 67 211.6 64 158.2 1 107.6 340.3 1 605.4 .4 Air springs  671.0 4.4 17.5 20.4 628.7 1.1

Antilock brake system  48 730.0 46 815.0 838.4 200.6 876.0 .7 Collision warning system 64.5 4.4 28.3 4.0 27.9 5.1 Computerized drive train control unit 10 060.8  9 806.0 117.8 17.7 119.2 2.4 Crane  107.4 9.0 28.7 22.4 47.4 3.9 Electronic vehicle identification device 146.0  2.5 5.3 3.7 134.6 3.1

Engine retarder/brake  951.5 14.3 42.2 24.9 870.2 .8 Frontwheel drive  32 354.1 31 992.1 357.3 S S 1.0 Hoist  619.4 48.3 129.3 136.0 305.9 1.4 Idlereducing technology (portable auxiliary pack, electrification, etc.) 184.1  2.2 20.7 14.8 146.4 4.4 Internet access  15.6 S 1.7 S 12.8 9.3

Lift gate  302.8 49.3 105.7 88.8 59.0 2.5 Mounting bar for snowplow 1 066.9 989.0 57.5 7.7 12.7 6.6 Navigational system 20.9 S 1.4 1.8 17.7 8.1 Power takeoff 1 389.9 61.5 215.5 241.1 871.7 .9 Radial tires 53 952.1 50 669.0 1 181.8 423.9 1 677.4 .7

Reflective material in addition to those required by law 725.2  64.6 141.2 94.1 425.3 1.6 Road speed governor  1 397.7 45.1 204.7 184.2 963.7 1.4 Toolbox  8 386.8 7 130.3 523.1 199.5 533.9 2.5 Trip recorder or onboard computer with communication capabilities 3 305.5  2 954.0 93.9 31.9 225.7 4.2 Trip recorder or onboard computer without communication capabilities 13 338.8  13 012.8 177.5 9.9 138.7 2.0

Vehicle control aids for handicapped drivers 153.4  148.1 S V V 24.9

Wheelchair lift  246.6 245.0 S V V 18.9

Winch  770.6 508.2 102.2 60.2 100.0 7.4

Transmission type:

Automatic 63 022.3 61 512.0 1 054.0 211.1 245.3 .5

Manual  18 186.6 14 726.9 748.0 601.8 2 110.0 1.5

Semiautomated manual  104.5 78.2 2.3 2.9 21.1 25.7

Automated manual 109.8 95.8 S 1.2 11.3 22.6

Not reported  3 751.4 3 346.7 108.2 93.4 203.1 3.9

Braking system:

Hydraulic (standard) 1 501.7 403.0 556.2 329.8 212.7 1.0

Hydraulic with power assist 1 189.1  308.0 476.0 260.2 144.9 1.7 Air  2 307.3 15.4 72.5 195.5 2 023.9 .5 Other  V VVVV N Not reported  522.4 80.9 136.0 99.6 205.9 2.7 Not applicable10  79 654.3 78 952.2 673.3 S S .2

See footnotes at end of table.

Vehicle Inventory and Use Survey United States 39

U.S. Census Bureau, 2002 Economic Census
Table 4. Trucks by Vehicle Size: 2002Con.

[Thousands. Estimates are based on data from the 2002 Vehicle Inventory and Use Survey. Because of rounding, estimates may not be additive]

Vehicular and operational characteristics

Vehicle size

Total Light Medium Lightheavy Heavyheavy

Coefficient of

variation of total

(percent)

FUEL TYPE AND ENGINE SIZE

Fuel type:

Gasoline 76 334.6 74 765.1 1 012.6 341.9 215.0 .3

Diesel  6 125.4 2 513.0 831.7 490.0 2 290.6 2.1

Natural gas  74.8 71.5 S S .6 22.1

Propane  48.3 14.0 9.5 14.3 10.5 11.9

Alcohol fuels  141.1 139.4 S S .3 11.8

Electricity  S SVVV S

Combination  379.2 371.9 2.3 1.6 3.4 12.3

Other  V VVVV N

Not reported  93.3 90.5 .9 .3 1.7 27.1

Not applicable2  1 978.0 1 794.1 54.3 60.8 68.8 5.7

Cylinders11:

4 cylinders  11 338.9 11 204.2 101.9 14.5 18.2 2.3

6 cylinders  40 872.7 38 135.3 326.0 363.4 2 048.1 .8

8 cylinders  31 489.9 29 552.8 1 316.8 384.9 235.4 1.1

Other  1 473.3 867.3 169.3 147.5 289.1 4.6

Cubic inch displacement11:

Gasoline fuel  76 334.6 74 765.1 1 012.6 341.9 215.0 .3

Less than 200  19 844.1 19 828.1 9.3 6.0 S 1.6

200 to 299  28 727.0 28 639.0 74.4 11.7 2.0 1.2

300 to 349  12 502.9 12 391.1 102.9 5.3 3.6 2.1

350 to 399  11 503.0 10 927.8 396.0 120.8 58.5 2.1

400 or more 2 452.6 2 033.1 316.2 62.4 40.9 3.9

Not available  1 305.0 946.1 113.8 135.8 109.3 6.2

Diesel fuel  6 125.4 2 513.0 831.7 490.0 2 290.6 2.1

Less than 400  1 498.8 1 025.1 298.8 104.6 70.3 5.1

400 to 599  2 703.3 1 448.8 506.3 334.1 414.0 3.9

600 to 799  920.8 1.1 5.5 19.1 895.0 .9

800 or more 629.6 25.8 7.9 7.4 588.5 1.4

Not available  372.9 S 13.3 24.8 322.7 2.3

Other fuel 643.5 596.8 14.5 17.4 14.7 8.1

Less than 400  587.8 572.1 6.5 6.4 2.8 8.8

400 or more 46.9 21.8 6.7 8.8 9.6 16.2

Not available  8.8 2.9 1.4 2.2 2.4 17.2

Not reported  93.3 90.5 .9 .3 1.7 27.1

Not applicable2  1 978.0 1 794.1 54.3 60.8 68.8 5.7

REFUELING LOCATION

Gas station  74 469.5 72 045.1 1 333.4 456.8 634.1 .3

Truck stop  1 427.5 543.7 99.4 69.7 714.7 4.1

Own facility (including home, farm, ranch, onsite by mobile supplier, etc.) 2 941.7  1 418.3 322.2 253.5 947.7 3.2

Other company’s/contractor’s facility not open to the public 401.6  268.2 24.9 22.6 85.9 10.7

Other  37.2 36.3 S S .2 30.1

Not reported  3 919.4 3 653.8 79.6 46.6 139.4 3.9

Not applicable2  1 978.0 1 794.1 54.3 60.8 68.8 5.7

MAINTENANCE5

General maintenance performed by:

None performed  1 931.2 1 862.3 28.3 18.6 22.0 5.5 Companyowned maintenance facility 7 079.0  4 817.5 561.8 320.2 1 379.5 2.5

General repair business or private mechanic 35 240.8  33 641.6 644.0 244.5 710.7 1.0

Dealership service department 20 763.5  20 126.4 282.1 77.5 277.5 1.5

Leasing company  178.8 109.3 8.4 12.1 49.1 15.5

Individual not employed/paid by any maintenance type facility 29 909.6  28 684.0 550.2 221.7 453.7 1.2 Other  V VVVV N Not reported  4 118.5 3 856.0 79.4 44.4 138.7 3.8 Not applicable2  1 978.0 1 794.1 54.3 60.8 68.8 5.7

Extensive repairs performed by:

None performed  65 555.5 61 754.6 1 373.7 631.9 1 795.3 .5

Companyowned maintenance facility 1 055.5  736.5 68.9 36.0 214.1 7.1

General repair business or private mechanic 5 782.8  5 359.2 155.0 54.9 213.6 3.2

Dealership service department 3 587.7  3 320.0 107.0 27.0 133.6 4.1

Leasing company  37.7 S 1.3 3.0 5.8 39.3

Component distributorship (engine, transmission, body, etc.) 309.1  265.8 16.6 3.2 23.4 12.1 Individual not employed/paid by any repair type facility 3 573.3  3 387.8 94.2 26.4 64.9 4.0 Other  V VVVV N Not reported  190.2 185.0 1.1 2.4 1.7 16.6 Not applicable2  1 978.0 1 794.1 54.3 60.8 68.8 5.7

TRUCK TYPE AND AXLE ARRANGEMENT

Singleunit trucks and trucktractors without trailer 82 084.0  78 649.0 1 512.1 820.5 1 102.4 .2

2 axles  81 476.2 78 637.5 1 501.4 803.0 534.3 .2

3 axles  467.7 2.8 8.6 14.7 441.5 1.2

4 axles  102.0 S .4 .9 100.7 2.4

5 axles or more 22.3 S V S 22.1 5.1

Not reported  15.8 8.5 1.7 1.8 3.8 24.2

Combinations  3 090.8 1 110.6 401.9 89.8 1 488.4 3.1 Singleunit trucks with trailer 1 702.5  1 110.6 401.9 77.5 112.5 5.5 3 axles  522.8 449.6 43.0 12.3 17.9 8.9 4 axles  1 039.1 606.3 337.8 54.5 40.6 7.7 5 axles or more 95.7 S S 4.9 50.9 17.6

Not reported  44.9 32.0 4.0 S 3.2 28.2 Trucktractors with single trailer 1 320.1  V V 12.3 1 307.7 .5 3 axles  61.3 V V 1.7 59.6 4.8 4 axles  127.9 V V 6.1 121.8 3.3 5 axles or more 1 034.5 V V 2.8 1 031.7 .6 Not reported  96.4 V V 1.7 94.7 3.3 Trucktractors with double trailers 66.6  V V V 66.6 4.3 5 axles  38.9 V V V 38.9 6.3 6 axles  10.8 V V V 10.8 11.1 7 axles  5.3 V V V 5.3 11.9 8 axles or more 9.5 V V V 9.5 7.7 Not reported  2.3 V V V 2.3 22.1 Trucktractors with triple trailers 1.5  V V V 1.5 28.1

7 axles  1.2 V V V 1.2 34.5

8 axles  S VVVS S

9 axles  S VVVS S

10 axles or more S VVVS S

Not reported  S VVVS S

See footnotes at end of table.

40 United States Vehicle Inventory and Use Survey

U.S. Census Bureau, 2002 Economic Census
Table 4. Trucks by Vehicle Size: 2002Con.

[Thousands. Estimates are based on data from the 2002 Vehicle Inventory and Use Survey. Because of rounding, estimates may not be additive]

Vehicular and operational characteristics

Vehicle size

Total Light Medium Lightheavy Heavyheavy

Coefficient of

variation of total

(percent)

TRUCK TYPE AND AXLE ARRANGEMENTCon.

Driving axles:

1  50 863.9 47 690.0 1 454.3 864.4 855.2 .7

2  34 261.6 32 056.8 458.0 43.9 1 702.9 1.0

3 or more  22.8 V S .3 22.3 5.3

Not reported  26.5 12.8 1.6 1.7 10.5 16.3

Total liftable axles and locations12:

None 5 292.6 805.6 1 236.9 879.2 2 370.8 .4

1  175.0 1.2 2.3 3.8 167.8 2.0

Forward of the drive axle  103.7 S .8 2.1 100.5 2.4

Below the chassis 30.6 S 1.0 1.3 28.0 5.2

Beyond the chassis  14.1 V V V 14.1 8.2

Not reported  26.6 S S S 25.2 5.7

2 or more  25.2 V V S 25.0 5.2

Forward of the drive axle  21.6 V V S 21.4 5.6

Below the chassis 9.4 V V S 9.4 7.9

Beyond the chassis  6.9 V V V 6.9 8.4

Not reported  1.2 V V S 1.1 22.5

Not reported  27.7 .5 1.5 2.0 23.7 7.5

Not applicable10  79 654.3 78 952.2 673.3 S S .2

Total liftable axles and number of braking axles:

None 5 292.6 805.6 1 236.9 879.2 2 370.8 .4

1  175.0 1.2 2.3 3.8 167.8 2.0

0 braking  25.3 S .6 .8 23.6 5.3

1 braking  140.5 .4 1.5 2.2 136.4 2.2

Not reported  9.2 S S .7 7.8 10.1

2 or more  25.2 V V S 25.0 5.2

0 braking  .9 V V V .9 23.0

1 braking  .9 V V S .8 25.0

2 or more braking  22.6 V V S 22.5 5.7

Not reported  .8 V V V .8 23.4

Not reported  27.7 .5 1.5 2.0 23.7 7.5

Not applicable10  79 654.3 78 952.2 673.3 S S .2

CAB TYPE

Conventional cab  4 878.7 742.8 1 035.9 810.3 2 289.7 .5 With sleeper  568.6 V V 1.9 566.6 1.1 Without sleeper 4 220.0 742.8 1 035.9 806.9 1 634.4 .5 Not reported  90.2 V V 1.5 88.7 3.6

Cab over engine  603.7 56.4 197.9 68.2 281.2 1.2 With sleeper  109.0 V V 1.6 107.4 3.2 Without sleeper 479.6 56.4 197.9 66.4 158.9 1.4 Not reported  15.1 V V S 14.9 10.1

Cab forward of engine  17.4 2.8 2.8 S 10.4 9.5

Cab beside engine  9.3 4.4 2.8 .6 1.5 12.3 Not reported  11.4 1.0 1.2 S 4.5 34.2

Not applicable10  79 654.3 78 952.2 673.3 S S .2

N Not available. S Estimate does not meet publication standards because of high sampling variability or poor response quality. V Represents an estimate of less than 50 vehicles, 50,000

miles, or 0.05 percent.

1Comparability of estimates may vary across survey years due to changes in category definitions.

2Vehicles not in use.

3Trucktractors not in use. 4Lessees or lessors of pickups, minivans, other light vans, and sport utilities.

5Detail lines do not add to total trucks because items were not applicable or multiple responses were possible.

6Includes pickups, minivans, other light vans, and sport utilities; all other vehicles that are private, rental, or used for personal transportation; and vehicles not in use. 7Distributed miles data are available in Table 8.

8Includes pickups, minivans, other light vans, and sport utilities; all other vehicles that are rental or used for personal transportation; and vehicles not in use. 9Pickups, minivans, other light vans, and sport utilites, in the Equipment Type section, were only required to report for aerial work platform/bucket, air bag(s), airconditioning, antilock brake

system, computerized drive train control unit, frontwheel drive, mounting bar for snowplow, radial tires, toolbox, trip recorder, vehicle control aids for handicapped drivers, wheelchair lift, and winch. 10Pickups, minivans, other light vans, and sport utilities. 11Data were derived from administrative records. 12Detail lines do not add to the subtotal line because items were not applicable or multiple responses were possible. When 2 or 3 liftable axles were indicated, respondents properly reported

multiple responses, therefore detail lines will be significantly greater than the corresponding subtotal line.

Note: Use caution when assessing the true increase or decrease in any particular data line. Large changes in the "not reported" or "not applicable" estimates should be taken into account.

Note: The Appendix provides instructions for approximating unpublished coefficients of variation (CVs). CVs estimated from sample data are available on request. The Introduction

gives information on confidentiality protection, sampling error, nonsampling error, sample design, and definitions. Links to this information on the Internet may be found

at www.census.gov/svsd/www/02vehinv.html.

Vehicle Inventory and Use Survey United States 41

U.S. Census Bureau, 2002 Economic Census
Table 5. Trucks by Truck Type: 2002

[Thousands. Estimates are based on data from the 2002 Vehicle Inventory and Use Survey. Because of rounding, estimates may not be additive]

Vehicular and operational characteristics

Truck type

Combination

Total

Singleunit

trucks and

trucktractors

without trailer Total

Singleunit

truck with

trailer

Trucktractor

with single

trailer

Trucktractor

with double

trailers

Trucktractor

with triple

trailers

Coefficient of

variation of

total

(percent)

Total 85 174.8  82 084.0 3 090.8 1 702.5 1 320.1 66.6 1.5 X

Coefficient of variation (percent) .2  .2 3.1 5.5 .5 4.3 28.1 X

BUSINESS1

Forhire transportation or warehousing 1 280.2  574.1 706.2 21.7 637.9 45.1 1.5 3.4

Vehicle leasing or rental 859.2  781.8 77.4 .5 76.7 S V 7.8

Agriculture, forestry, fishing, or hunting 2 239.9  1 857.5 382.4 217.6 156.3 8.5 V 3.7

Mining  177.6 145.9 31.7 7.4 23.2 1.1 V 11.4

Utilities  679.3 614.8 64.5 56.8 7.5 S V 8.3

Construction 4 541.5  4 208.6 332.9 222.9 104.4 5.5 S 3.3

Manufacturing 782.9  706.3 76.6 15.6 60.1 .9 V 8.5

Wholesale trade 735.9  654.8 81.0 12.6 66.7 1.8 V 7.5

Retail trade 1 530.5  1 411.8 118.8 55.7 62.3 .7 S 5.7

Information services 376.6  375.1 1.5 .8 .7 V V 14.2

Waste management, landscaping, or administrative/support services 743.2  565.0 178.1 159.0 18.8 .4 V 7.7

Arts, entertainment, or recreation services 187.1  166.6 20.5 16.9 3.5 S V 17.6

Accommodation or food services 284.3  261.7 22.6 1.1 20.6 .8 V 12.8

Other services 2 127.3  2 094.4 32.9 23.3 9.6 S V 5.3

Personal transportation 65 343.0  64 497.2 845.8 845.1 .7 V V .5

Not reported 1 308.2  1 190.4 117.8 45.4 71.1 1.3 V 6.6

Not applicable2  1 978.0 1 978.0 V V V V V 5.7

BODY TYPE

Singleunit trucks 83 752.9  82 050.3 1 702.5 1 702.5 N N N .2

Pickup 37 991.1  36 789.6 1 201.5 1 201.5 N N N .3

Minivan 12 207.3  12 194.0 S S N N N 2.0

Other light vans 5 251.4  5 207.8 43.7 43.7 N N N 3.3

Sport utility 24 204.4  24 018.8 185.7 185.7 N N N 1.1

Armored 11.3  11.3 V V N N N 38.4

Beverage 41.6  41.0 .6 .6 N N N 7.1

Concrete mixer 77.0  76.0 1.0 1.0 N N N 3.2

Concrete pumper 5.9  5.7 S S N N N 12.8

Crane  17.6 17.4 .1 .1 N N N 9.5 Curtainside 3.6  3.4 S S N N N 15.8

Dump 727.0 631.7 95.4 95.4 N N N 1.5 Flatbed, stake, or platform 948.1  857.9 90.2 90.2 N N N 1.5 Low boy  3.6 1.6 2.0 2.0 N N N 18.6 Pole, logging, pulpwood, or pipe 18.1  11.8 6.3 6.3 N N N 6.5 Service, utility 262.1  238.1 24.0 24.0 N N N 2.8

Service, other 221.8  213.1 8.7 8.7 N N N 3.1

Street sweeper 6.4  6.4 V V N N N 16.0

Tank, dry bulk 26.1  25.5 .6 .6 N N N 6.6

Tank, liquids or gases 166.7  161.0 5.6 5.6 N N N 3.0

Tow/Wrecker 127.8  126.0 1.8 1.8 N N N 4.8

Trash, garbage, or recycling 96.0  95.9 S S N N N 3.3

Vacuum 14.7  14.3 S S N N N 8.9

Van, basic enclosed 583.1  573.0 10.1 10.1 N N N 2.0

Van, insulated nonrefrigerated 18.9  18.7 .3 .3 N N N 9.7

Van, insulated refrigerated 86.3  84.6 1.7 1.7 N N N 4.8

Van, open top 151.7  148.5 3.2 3.2 N N N 2.6

Van, step, walkin, or multistop 413.1  409.4 3.7 3.7 N N N 4.2

Van, other 69.0  66.9 2.1 2.1 N N N 5.5

Other  1.1 1.1 S S N N N 33.1

Trucktractors 1 421.9  33.7 1 388.2 N 1 320.1 66.6 1.5 .5 Automobile carrier 12.8  N 12.8 N 12.8 V V 9.7 Beverage 33.6  N 33.6 N 33.5 S V 6.7

Curtainside 3.5  N 3.5 N 3.5 S V 16.1

Dump 129.2 N 129.2 N 118.5 10.6 S 2.6

Flatbed, stake, or platform 193.5  N 193.5 N 183.7 9.8 V 2.3

Livestock 15.3  N 15.3 N 15.2 S V 8.7

Low boy 57.7  N 57.7 N 57.2 S S 3.8

Mobile home toter 4.9  N 4.9 N 4.9 V V 13.5

Open top 64.0  N 64.0 N 61.7 2.3 V 3.2

Pole, logging, pulpwood, or pipe 21.7  N 21.7 N 21.4 .4 V 5.5

Tank, dry bulk 28.3  N 28.3 N 25.7 2.6 V 6.1 Tank, liquids or gases 80.6  N 80.6 N 78.8 1.8 V 3.7 Van, basic enclosed 592.6  N 592.6 N 557.9 33.5 1.2 1.2 Van, dropframe 14.0  N 14.0 N 10.8 3.2 V 9.8 Van, insulated nonrefrigerated 14.9  N 14.9 N 14.4 .5 V 7.7

Van, insulated refrigerated 120.4  N 120.4 N 119.0 1.4 S 2.9

Other  1.3 N 1.3 N 1.3 V V 22.0 Not applicable3  33.7 33.7 V N V V V 5.8

ANNUAL MILES

Less than 5,000 14 071.6  13 442.4 629.2 504.5 122.2 2.6 V 1.8

5,000 to 9,999 17 093.3  16 668.2 425.1 351.4 72.1 1.6 V 1.7

10,000 to 19,999 37 362.8  36 724.8 637.9 520.4 114.4 3.1 V 1.0

20,000 to 29,999 9 349.8  9 093.8 256.0 149.2 103.6 3.0 S 2.5

30,000 to 49,999 3 662.6  3 361.6 300.9 116.7 174.6 9.6 S 3.8

50,000 to 74,999 961.5  708.2 253.3 42.9 198.0 12.4 V 6.5

75,000 or more 695.2  106.9 588.3 17.5 535.2 34.3 1.3 3.1

Not applicable2  1 978.0 1 978.0 V V V V V 5.7

See footnotes at end of table.

42 United States Vehicle Inventory and Use Survey

U.S. Census Bureau, 2002 Economic Census
Table 5. Trucks by Truck Type: 2002Con.

[Thousands. Estimates are based on data from the 2002 Vehicle Inventory and Use Survey. Because of rounding, estimates may not be additive]

Vehicular and operational characteristics

Truck type

Combination

Total

Singleunit

trucks and

trucktractors

without trailer Total

Singleunit

truck with

trailer

Trucktractor

with single

trailer

Trucktractor

with double

trailers

Trucktractor

with triple

trailers

Coefficient of

variation of

total

(percent)

PRIMARY RANGE OF OPERATION

Offtheroad 1 040.8  939.4 101.4 72.0 29.0 .3 V 7.2

50 miles or less 58 076.1  56 864.6 1 211.5 843.1 354.7 13.6 S .6

51 to 100 miles 7 411.7  6 987.9 423.9 212.7 202.0 9.1 V 2.7

101 to 200 miles 2 136.3  1 902.4 234.0 97.5 123.1 13.3 S 5.2

201 to 500 miles 1 142.6  880.0 262.6 94.6 153.5 14.1 .3 6.4

501 miles or more 1 411.2  1 053.7 357.5 118.4 228.0 10.0 1.1 6.3

Not reported 11 977.9  11 478.0 499.9 264.2 229.7 6.1 S 2.1

Not applicable2  1 978.0 1 978.0 V V V V V 5.7

PRIMARY JURISDICTION

Operated in Canada 18.9  S S S .5 V V 43.0

Operated in Mexico S  S 1.0 S .9 V V S

Operated within the home base state 71 871.1  69 645.6 2 225.6 1 394.5 785.7 45.0 .3 .4 Operated in states other than the home base state 1 902.8  1 426.5 476.3 95.8 363.2 16.3 1.0 4.7 Not reported 9 360.3  8 975.6 384.7 209.5 169.7 5.3 S 2.4

Not applicable2  1 978.0 1 978.0 V V V V V 5.7

MONTHS OPERATED

12 59 689.6 57 721.1 1 968.5 1 062.3 861.8 43.0 1.3 .6

7 to 11 11 537.7  10 963.2 574.5 323.3 239.4 11.6 S 2.1

2 to 6  9 585.8 9 152.1 433.7 240.1 182.3 11.2 S 2.3

1 or less 2 383.7  2 269.6 114.1 76.8 36.5 .7 V 4.5

Vehicle not used 1 978.0  1 978.0 V V V V V 5.7

VEHICLE SIZE

Light 79 759.6 78 649.0 1 110.6 1 110.6 V V V .2

Medium 1 914.0  1 512.1 401.9 401.9 V V V 3.3

Lightheavy 910.3  820.5 89.8 77.5 12.3 V V 2.2

Heavyheavy 2 590.9  1 102.4 1 488.4 112.5 1 307.7 66.6 1.5 .5

AVERAGE WEIGHT (POUNDS)

Less than 6,001 62 617.3  62 212.8 404.4 404.4 V V V .5 6,001 to 8,500 14 351.6  13 930.1 421.5 421.5 V V V 1.9 8,501 to 10,000 2 790.7  2 506.0 284.7 284.7 V V V 4.4 10,001 to 14,000 1 142.1  913.0 229.1 229.1 V V V 4.4 14,001 to 16,000 395.9  305.7 90.2 90.2 V V V 6.6

16,001 to 19,500 376.1  293.4 82.7 82.7 V V V 7.7

19,501 to 26,000 910.3  820.5 89.8 77.5 12.3 V V 2.2

26,001 to 33,000 436.8  380.4 56.5 31.6 24.5 S V 2.1

33,001 to 40,000 228.8  152.5 76.3 25.4 50.0 .9 V 2.5

40,001 to 50,000 318.4  199.9 118.5 15.6 101.9 1.1 V 1.9

50,001 to 60,000 326.6  192.7 133.8 10.7 119.9 3.2 V 1.6

60,001 to 80,000 1 178.7  167.1 1 011.6 21.5 941.3 48.7 S .6

80,001 to 100,000 68.9  8.4 60.4 4.8 53.2 2.2 .4 3.4

100,001 to 130,000 26.4  1.4 25.0 2.6 14.7 6.9 .8 4.7

130,001 or more 6.3  S 6.2 .3 2.3 3.3 S 9.3

TOTAL LENGTH (FEET)

Less than 20.0 72 155.3  72 155.3 V V V V V .4

20.0 to 27.9 7 634.7  7 231.5 403.2 403.2 V V V 2.5

28.0 to 35.9 2 680.7  2 194.8 485.9 472.5 13.5 V V 3.9

36.0 to 40.9 866.4  416.3 450.1 389.5 60.6 V V 7.7

41.0 to 44.9 261.1  51.9 209.2 162.3 46.9 V V 12.3

45.0 to 49.9 241.7  22.3 219.4 151.8 67.4 S V 13.5

50.0 to 54.9 201.8  11.8 190.0 82.2 107.3 .6 V 11.3

55.0 to 59.9 233.0  S 233.0 19.5 211.6 1.8 V 2.9

60.0 to 64.9 301.6  S 301.6 10.9 283.3 7.4 V 1.7

65.0 to 69.9 273.3  V 273.3 6.0 249.1 18.2 V 1.8

70.0 to 74.9 217.2  V 217.2 3.1 196.7 17.5 V 2.2

75.0 to 79.9 92.1  V 92.1 .9 79.0 12.2 V 4.0

80.0 or more 15.7  V 15.7 .7 4.8 8.7 1.5 7.2

MILES PER GALLON

Less than 5 481.4  299.0 182.4 22.4 150.5 9.2 .3 1.5

5 to 6.9 1 625.8  772.1 853.7 54.7 757.1 40.9 1.0 2.2

7 to 8.9 1 364.3  1 139.2 225.1 81.5 133.4 10.3 S 3.7

9 to 10.9 4 239.4  3 968.6 270.9 247.6 22.7 S V 3.5

11 to 12.9 6 047.0  5 730.9 316.0 308.1 7.8 S V 3.1

13 to 14.9 7 031.8  6 842.1 189.7 187.9 1.7 S V 2.9

15 or more 48 486.7  47 926.3 560.4 559.1 1.1 S V .8

15 to 20.9 38 065.4  37 545.2 520.2 519.0 1.1 S V 1.0

21 to 24.9 6 623.6  6 591.6 32.0 32.0 V V V 3.0

25 or more 3 797.7  3 789.5 S S V V V 4.3

Not reported 13 920.3  13 427.8 492.5 241.1 245.7 5.5 S 1.9

Not applicable2  1 978.0 1 978.0 V V V V V 5.7

See footnotes at end of table.

Vehicle Inventory and Use Survey United States 43

U.S. Census Bureau, 2002 Economic Census
Table 5. Trucks by Truck Type: 2002Con.

[Thousands. Estimates are based on data from the 2002 Vehicle Inventory and Use Survey. Because of rounding, estimates may not be additive]

Vehicular and operational characteristics

Truck type

Combination

Total

Singleunit

trucks and

trucktractors

without trailer Total

Singleunit

truck with

trailer

Trucktractor

with single

trailer

Trucktractor

with double

trailers

Trucktractor

with triple

trailers

Coefficient of

variation of

total

(percent)

MODEL YEAR

2003  94.0 62.5 31.5 S 26.1 2.9 V 26.9

2002  4 982.6 4 852.0 130.5 53.3 72.3 4.8 S 3.5

2001  7 456.4 7 210.2 246.2 133.9 106.9 4.9 S 2.9

2000  8 179.5 7 879.9 299.6 120.5 172.1 6.8 S 2.7

1999  7 016.5 6 745.5 271.0 138.4 128.5 4.0 S 2.9

1998  6 363.2 6 156.6 206.6 99.6 100.2 6.8 S 3.1

1997  5 727.0 5 539.5 187.4 112.3 71.2 3.8 S 3.2

1996  4 757.5 4 581.1 176.4 88.4 82.9 5.0 S 3.4

1995  5 247.7 5 039.7 207.9 108.9 93.0 5.9 S 3.3

1994  4 479.4 4 346.7 132.7 62.5 66.3 3.7 S 3.5

1993  4 078.2 3 957.2 121.0 66.0 52.8 2.2 V 4.0

Pre1993 26 792.8  25 713.1 1 079.8 716.2 347.7 15.7 S 1.2

VEHICLE ACQUISITION

New  37 979.5 36 558.7 1 420.8 719.5 661.5 38.5 1.2 1.0

Used  41 378.6 39 964.1 1 414.5 854.5 538.3 21.5 S .9

Not reported 5 816.7  5 561.2 255.5 128.5 120.3 6.6 .2 3.1

LEASE CHARACTERISTICS

Leased 4 898.9  4 520.7 378.2 54.5 312.9 10.3 .5 3.4

Lessee 3 871.4  3 666.4 205.1 48.2 149.7 6.7 .5 4.0

Vehicle only 332.7  184.3 148.4 11.8 129.6 6.5 S 2.1

Vehicle with driver 19.5  .5 19.1 S 18.8 S S 6.4

Not reported 2.3  S 1.7 S 1.2 S V 25.2

Not applicable4  3 516.8 3 481.0 35.9 35.9 V V V 4.4

Lessor 653.8  490.3 163.6 4.8 155.5 3.2 V 8.1

Vehicle only 267.3  135.7 131.6 3.6 125.4 2.7 V 2.4

Vehicle with driver 35.3  4.6 30.6 1.0 29.0 .6 V 5.7

Not reported 3.3  1.9 1.3 S 1.1 V V 28.1

Not applicable4  348.0 348.0 V V V VV 15.1

Not reported 373.6  364.0 9.6 S 7.8 S V 12.5

Not leased 45 730.1  44 071.1 1 659.0 925.8 690.2 42.3 .8 .8

Not reported 34 545.8  33 492.2 1 053.6 722.3 317.0 14.1 S 1.1

Length of leasing agreement:

Leased 4 898.9  4 520.7 378.2 54.5 312.9 10.3 .5 3.4

1 to 11 months 43.0  16.7 26.3 .5 25.5 .4 V 5.3

12 months or more 618.8  310.6 308.3 16.2 281.9 9.6 .5 1.5

Not reported 13.7  6.7 7.0 1.2 5.5 S V 11.1

Not applicable4  4 223.3 4 186.7 36.5 36.5 V V V 4.0

Provisions of lease5:

Financing only 408.9  226.2 182.7 12.7 162.8 7.0 S 2.0

Full maintenance 232.7  116.6 116.1 1.7 111.7 2.5 S 2.5

Payment of taxes 267.1  134.0 133.0 3.9 126.7 2.5 S 2.4

Obtaining licenses and permits 267.7  125.8 141.9 3.3 136.4 2.3 V 2.3

Recordkeeping 148.0  68.0 80.0 2.1 76.0 1.9 V 3.3

Fuel contract 72.4  31.7 40.7 S 39.1 S S 4.9

PRIMARY OPERATOR CLASSIFICATION

Private 15 268.1  13 954.8 1 313.2 814.1 487.0 12.0 S 1.7

Motor carrier 1 160.2  551.3 608.8 12.5 550.0 44.9 1.5 3.5

Owner operator 545.7  303.9 241.8 29.6 202.8 9.4 V 6.2

Rental  879.3 798.3 81.0 1.3 79.6 S V 7.6

Personal transportation 65 343.5  64 497.6 845.8 845.2 .7 V V .5

Not applicable2  1 978.0 1 978.0 V V V V V 5.7

Forhire characteristics:

Type of carrier:

Contract 602.4  170.6 431.8 8.4 402.2 20.8 .4 2.8

Common 536.4  220.5 316.0 7.2 277.2 30.7 1.0 1.5

Not reported 193.3  111.1 82.2 5.7 73.5 2.9 S 3.6

Not applicable6  83 842.7 81 581.8 2 260.9 1 681.3 567.2 12.3 S .2

Type of service:

Truckload 792.6  188.4 604.1 12.6 572.8 18.5 S 1.0

Lessthan truckload 350.1  201.4 148.7 3.4 110.8 33.4 1.2 4.8

Not reported 189.3  112.4 77.0 5.3 69.1 2.5 S 3.6

Not applicable6  83 842.8 81 581.8 2 261.0 1 681.3 567.3 12.3 S .2

Source of hauls:

Shippers or receivers 899.2  283.5 615.6 9.3 559.0 46.0 1.4 2.0

Brokers 92.1  20.3 71.9 .8 68.4 2.6 V 3.8 Centralized markets or exchanges 24.1  14.0 10.1 .8 8.9 S V 7.8

Other  V V V V V VV N Not reported 316.7  184.4 132.3 10.3 116.5 5.4 S 2.5

Not applicable6  83 842.7 81 581.8 2 260.9 1 681.3 567.2 12.3 S .2

HAZARDOUS MATERIALS CARRIED7

Carrying hazardous materials 366.1  125.2 241.0 5.0 217.7 17.3 .9 1.9

Not carrying hazardous materials 3 873.5  2 743.3 1 130.2 224.4 867.4 37.8 .6 .6

Not reported 681.1  490.0 191.1 25.1 154.7 11.3 V 1.5

Not applicable8  80 254.0 78 725.5 1 528.5 1 448.1 80.2 S V .2

EQUIPMENT TYPE5 9

Aerial work platform/bucket 166.0  148.4 17.7 17.7 V V V 8.8

Air bag(s) (safety device only) 47 019.2  46 187.9 831.3 650.3 174.5 6.2 S .8

Air compressor (except air brakes) 353.0  174.0 179.0 11.3 159.2 8.5 V 2.0

Airconditioning 67 211.6  64 858.0 2 353.6 1 234.5 1 060.3 57.2 1.5 .4

Air springs 671.0  114.9 556.1 10.4 525.7 19.3 .7 1.1

See footnotes at end of table.

44 United States Vehicle Inventory and Use Survey

U.S. Census Bureau, 2002 Economic Census
Table 5. Trucks by Truck Type: 2002Con.

[Thousands. Estimates are based on data from the 2002 Vehicle Inventory and Use Survey. Because of rounding, estimates may not be additive]

Vehicular and operational characteristics

Truck type

Combination

Total

Singleunit

trucks and

trucktractors

without trailer Total

Singleunit

truck with

trailer

Trucktractor

with single

trailer

Trucktractor

with double

trailers

Trucktractor

with triple

trailers

Coefficient of

variation of

total

(percent)

EQUIPMENT TYPE5 9Con.

Antilock brake system 48 730.0  47 141.8 1 588.3 927.0 625.6 34.6 1.1 .7

Collision warning system 64.5  41.3 23.2 2.5 17.8 3.0 V 5.1

Computerized drive train control unit 10 060.8  9 802.3 258.5 168.3 85.9 4.1 S 2.4

Crane  107.4 98.5 8.9 5.6 3.2 S V 3.9

Electronic vehicle identification device 146.0  21.4 124.6 1.3 118.7 4.5 .1 3.1

Engine retarder/brake 951.5  251.5 700.1 29.0 645.0 25.5 .5 .8

Frontwheel drive 32 354.1  31 661.4 692.7 692.7 V V V 1.0

Hoist  619.4 568.9 50.5 50.5 V V V 1.4

Idlereducing technology (portable auxiliary pack, electrification, etc.) 184.1  54.4 129.7 3.2 120.0 5.9 S 4.4

Internet access 15.6  3.5 12.0 S 11.4 S V 9.3

Lift gate 302.8 296.7 6.1 6.1 V V V 2.5

Mounting bar for snowplow 1 066.9  963.7 103.2 103.2 V V V 6.6

Navigational system 20.9  7.1 13.8 S 12.5 S S 8.1

Power takeoff 1 389.9  1 051.7 338.1 84.6 246.6 6.9 S .9

Radial tires 53 952.1  51 822.7 2 129.3 1 124.4 949.2 54.3 1.5 .7

Reflective material in addition to those required by law 725.2  470.1 255.1 41.6 205.5 8.0 V 1.6 Road speed governor 1 397.7  670.8 726.9 42.1 638.7 44.7 1.4 1.4 Toolbox 8 386.8  7 663.6 723.2 474.6 237.1 11.2 S 2.5

Trip recorder or onboard computer with communication capabilities 3 305.5  3 044.3 261.2 48.8 209.2 3.1 .1 4.2 Trip recorder or onboard computer without communication

capabilities 13 338.8  12 980.5 358.3 248.2 94.1 15.4 .6 2.0

Vehicle control aids for handicapped drivers 153.4  153.4 V V V VV 24.9

Wheelchair lift 246.6  245.0 S S V VV 18.9

Winch  770.6 711.3 59.4 39.3 18.4 1.7 V 7.4

Transmission type:

Automatic 63 022.3  61 889.9 1 132.5 1 086.1 46.2 S V .5

Manual 18 186.6  16 442.5 1 744.1 551.1 1 129.5 62.0 1.5 1.5

Semiautomated manual 104.5  88.4 16.1 1.1 14.7 S V 25.7 Automated manual 109.8  99.1 10.8 S 8.9 S V 22.6

Not reported 3 751.4  3 564.1 187.4 62.7 120.7 4.0 V 3.9

Braking system:

Hydraulic (standard) 1 501.7  1 391.7 110.0 85.4 23.5 1.1 V 1.0

Hydraulic with power assist 1 189.1  1 107.9 81.1 69.2 11.8 S V 1.7

Air  2 307.3 991.5 1 315.8 85.2 1 167.5 61.5 1.5 .5

Other  V V V V V VV N

Not reported 522.4  382.7 139.7 18.5 117.2 3.9 V 2.7

Not applicable10 79 654.3 78 210.1 1 444.2 1 444.2 V V V .2

FUEL TYPE AND ENGINE SIZE

Fuel type:

Gasoline 76 334.6  75 092.0 1 242.6 1 235.4 7.1 S V .3

Diesel 6 125.4  4 282.7 1 842.6 463.2 1 311.4 66.5 1.5 2.1

Natural gas 74.8  74.7 S V S VV 22.1

Propane 48.3  46.3 2.0 S S V V 11.9

Alcohol fuels 141.1  139.6 S S S VV 11.8

Electricity  S S V V V VV S

Combination 379.2  377.7 S S S VV 12.3

Other  V V V V V VV N

Not reported 93.3  92.9 .4 S .3 V V 27.1

Not applicable2  1 978.0 1 978.0 V V V V V 5.7

Cylinders11: 4 cylinders 11 338.9  11 280.5 58.4 56.1 2.2 V V 2.3 6 cylinders 40 872.7  39 158.6 1 714.2 407.7 1 240.2 64.6 1.5 .8 8 cylinders 31 489.9  30 314.6 1 175.4 1 160.0 15.0 .3 V 1.1 Other 1 473.3  1 330.4 142.9 78.6 62.6 1.6 V 4.6

Cubic inch displacement11: Gasoline fuel 76 334.6  75 092.0 1 242.6 1 235.4 7.1 S V .3 Less than 200 19 844.1  19 760.4 83.7 83.7 V V V 1.6 200 to 299 28 727.0  28 525.7 201.3 201.3 V V V 1.2 300 to 349 12 502.9  12 296.9 206.0 205.9 S V V 2.1 350 to 399 11 503.0  11 041.6 461.4 460.6 .6 S V 2.1 400 or more 2 452.6  2 185.9 266.7 264.9 1.8 V V 3.9 Not available 1 305.0  1 281.4 23.6 19.0 4.6 V V 6.2 Diesel fuel 6 125.4  4 282.7 1 842.6 463.2 1 311.4 66.5 1.5 2.1 Less than 400 1 498.8  1 375.0 123.8 117.7 6.1 S V 5.1 400 to 599 2 703.3  2 337.8 365.5 288.4 76.1 1.0 V 3.9

600 to 799 920.8  278.7 642.1 19.0 590.5 32.2 .5 .9

800 or more 629.6  124.4 505.1 23.2 458.4 22.9 .6 1.4

Not available 372.9  166.7 206.2 14.9 180.4 10.4 S 2.3

Other fuel 643.5  638.4 5.1 3.8 S V V 8.1

Less than 400 587.8  584.5 3.2 2.5 S V V 8.8

400 or more 46.9  45.2 1.7 S .4 V V 16.2

Not available 8.8  8.6 S S S V V 17.2

Not reported 93.3  92.9 .4 S .3 V V 27.1

Not applicable2  1 978.0 1 978.0 V V V V V 5.7

REFUELING LOCATION

Gas station 74 469.5  72 899.1 1 570.3 1 369.8 196.0 4.5 V .3

Truck stop 1 427.5  709.8 717.7 119.3 584.5 13.6 S 4.1

Own facility (including home, farm, ranch, onsite by mobile supplier,

etc.)  2 941.7 2 348.5 593.2 128.8 423.1 40.0 1.2 3.2

Other company’s/contractor’s facility not open to the public 401.6  347.1 54.5 7.8 42.3 4.5 V 10.7

Other  37.2 37.0 .2 S S V V 30.1

Not reported 3 919.4  3 764.5 154.9 76.8 74.1 4.0 V 3.9

Not applicable2  1 978.0 1 978.0 V V V V V 5.7

See footnotes at end of table.

Vehicle Inventory and Use Survey United States 45

U.S. Census Bureau, 2002 Economic Census
Table 5. Trucks by Truck Type: 2002Con.

[Thousands. Estimates are based on data from the 2002 Vehicle Inventory and Use Survey. Because of rounding, estimates may not be additive]

Vehicular and operational characteristics

Truck type

Combination

Total

Singleunit

trucks and

trucktractors

without trailer Total

Singleunit

truck with

trailer

Trucktractor

with single

trailer

Trucktractor

with double

trailers

Trucktractor

with triple

trailers

Coefficient of

variation of

total

(percent)

MAINTENANCE5

General maintenance performed by:

None performed 1 931.2  1 897.0 34.2 25.8 8.3 S V 5.5

Companyowned maintenance facility 7 079.0  6 022.3 1 056.7 235.0 774.4 45.9 1.3 2.5 General repair business or private mechanic 35 240.8  34 193.7 1 047.1 633.4 394.4 19.2 .1 1.0 Dealership service department 20 763.5  20 310.8 452.6 265.9 180.8 5.9 .1 1.5 Leasing company 178.8  138.1 40.7 S 33.9 1.1 S 15.5

Individual not employed/paid by any maintenance type facility 29 909.6  28 969.2 940.4 744.3 188.8 7.2 V 1.2 Other  V V V V V VV N Not reported 4 118.5  3 963.2 155.3 72.4 79.6 3.3 V 3.8 Not applicable2  1 978.0 1 978.0 V V V V V 5.7

Extensive repairs performed by:

None performed 65 555.5  63 337.1 2 218.4 1 245.5 927.9 43.8 1.2 .5

Companyowned maintenance facility 1 055.5  909.7 145.8 35.6 100.2 9.9 .1 7.1

General repair business or private mechanic 5 782.8  5 502.3 280.5 160.7 112.3 7.4 S 3.2

Dealership service department 3 587.7  3 392.3 195.4 107.4 82.8 4.9 S 4.1

Leasing company 37.7  33.9 3.9 S 3.6 S V 39.3

Component distributorship (engine, transmission, body, etc.) 309.1  279.9 29.2 13.8 14.5 .9 S 12.1

Individual not employed/paid by any repair type facility 3 573.3  3 422.2 151.2 121.1 29.1 1.0 S 4.0

Other  V V V V V VV N

Not reported 190.2  183.0 S S 1.5 V V 16.6

Not applicable2  1 978.0 1 978.0 V V V V V 5.7

AXLE ARRANGEMENT

Driving axles:

1 50 863.9 49 672.7 1 191.2 934.7 213.3 42.0 1.2 .7

2 34 261.6 32 369.7 1 891.9 767.0 1 100.1 24.5 .3 1.0

3 or more 22.8  21.2 1.6 .4 1.1 S V 5.3

Not reported 26.5  20.5 6.1 .4 5.5 S V 16.3

Total liftable axles and locations12:

None 5 292.6  3 687.5 1 605.1 245.7 1 292.2 65.7 1.5 .4

1 175.0 142.7 32.4 9.3 22.3 .8 S 2.0

Forward of the drive axle 103.7  80.2 23.5 6.4 16.3 .7 S 2.4

Below the chassis 30.6  27.8 2.9 .9 1.9 S V 5.2

Beyond the chassis 14.1  13.3 .8 .4 .5 V V 8.2

Not reported 26.6  21.4 5.2 1.5 3.7 S V 5.7

2 or more 25.2  23.2 2.0 2.0 V V V 5.2

Forward of the drive axle 21.6  19.7 1.9 1.9 V V V 5.6

Below the chassis 9.4  8.6 .9 .9 V V V 7.9

Beyond the chassis 6.9  6.8 S S V V V 8.4

Not reported 1.2  1.1 S S V V V 22.5

Not reported 27.7  20.6 7.1 1.4 5.6 S V 7.5

Not applicable10 79 654.3 78 210.1 1 444.2 1 444.2 V V V .2

Total liftable axles and number of braking axles:

None 5 292.6  3 687.5 1 605.1 245.7 1 292.2 65.7 1.5 .4 1 175.0 142.7 32.4 9.3 22.3 .8 S 2.0

0 braking 25.3  19.5 5.8 1.5 4.2 S V 5.3

1 braking 140.5  115.3 25.2 7.4 17.0 .7 S 2.2

Not reported 9.2  7.9 1.4 .3 1.1 V V 10.1 2 or more 25.2  23.2 2.0 2.0 V V V 5.2 0 braking .9  .8 S S V V V 23.0

1 braking .9  .9 S S V V V 25.0

2 or more braking 22.6  20.8 1.8 1.8 V V V 5.7

Not reported .8  .7 S S V V V 23.4

Not reported 27.7  20.6 7.1 1.4 5.6 S V 7.5

Not applicable10 79 654.3 78 210.1 1 444.2 1 444.2 V V V .2

CAB TYPE

Conventional cab 4 878.7  3 403.2 1 475.5 244.2 1 171.8 58.1 1.4 .5

With sleeper 568.6  7.0 561.5 V 549.0 12.1 .5 1.1

Without sleeper 4 220.0  3 393.2 826.8 244.2 539.1 42.6 .9 .5

Not reported 90.2  3.1 87.2 V 83.7 3.4 V 3.6

Cab over engine 603.7  434.3 169.4 13.4 147.3 8.6 S 1.2

With sleeper 109.0  4.2 104.8 V 98.9 5.7 S 3.2

Without sleeper 479.6  429.1 50.4 13.4 34.5 2.5 V 1.4

Not reported 15.1  .9 14.2 V 13.9 S V 10.1

Cab forward of engine 17.4  17.2 S S V V V 9.5

Cab beside engine 9.3  8.9 S S S V V 12.3

Not reported 11.4  10.3 1.0 S .8 V V 34.2

Not applicable10 79 654.3 78 210.1 1 444.2 1 444.2 V V V .2

N Not available. S Estimate does not meet publication standards because of high sampling variability or poor response quality. V Represents an estimate of less than 50 vehicles, 50,000

miles, or 0.05 percent.

1Comparability of estimates may vary across survey years due to changes in category definitions.

2Vehicles not in use. When the respondent had partialyear ownership of the vehicle, annual miles were adjusted to reflect miles traveled when not owned by the respondent. 3Trucktractors not in use. 4Lessees or lessors of pickups, minivans, other light vans, and sport utilities.

5Detail lines do not add to total trucks because items were not applicable or multiple responses were possible.

6Includes pickups, minivans, other light vans, and sport utilities; all other vehicles that are private, rental, or used for personal transportation; and vehicles not in use. 7Distributed miles data are available in Table 8.

8Includes pickups, minivans, other light vans, and sport utilities; all other vehicles that are rental or used for personal transportation; and vehicles not in use. 9Pickups, minivans, other light vans, and sport utilites, in the Equipment Type section, were only required to report for aerial work platform/bucket, air bag(s), airconditioning, antilock brake

system, computerized drive train control unit, frontwheel drive, mounting bar for snowplow, radial tires, toolbox, trip recorder, vehicle control aids for handicapped drivers, wheelchair lift, and winch. 10Pickups, minivans, other light vans, and sport utilities. 11Data were derived from administrative records. 12Detail lines do not add to the subtotal line because items were not applicable or multiple responses were possible. When 2 or 3 liftable axles were indicated, respondents properly reported

multiple responses, therefore detail lines will be significantly greater than the corresponding subtotal line.

Note: Use caution when assessing the true increase or decrease in any particular data line. Large changes in the "not reported" or "not applicable" estimates should be taken into account.

Note: The Appendix provides instructions for approximating unpublished coefficients of variation (CVs). CVs estimated from sample data are available on request. The Introduction

gives information on confidentiality protection, sampling error, nonsampling error, sample design, and definitions. Links to this information on the Internet may be found

at www.census.gov/svsd/www/02vehinv.html.

46 United States Vehicle Inventory and Use Survey

U.S. Census Bureau, 2002 Economic Census
Table 6. Truck Miles by Vehicle Size: 2002

[Millions. Estimates are based on data from the 2002 Vehicle Inventory and Use Survey. Because of rounding, estimates may not be additive]

Vehicular and operational characteristics

Vehicle size

Total Light Medium Lightheavy Heavyheavy

Coefficient of variation of total (percent)

Total 1 114 728.0 969 104.3 26 255.6 11 765.7 107 602.4 X Coefficient of variation (percent) .6  .7 4.2 2.6 .7 X

BUSINESS1

Forhire transportation or warehousing 72 272.8  6 821.0 4 165.7 2 252.2 59 034.0 2.2

Vehicle leasing or rental  20 024.6 10 039.9 1 655.9 1 706.9 6 621.9 6.3

Agriculture, forestry, fishing, or hunting 24 120.0  15 586.0 1 824.4 868.6 5 841.0 5.8

Mining 3 411.5 1 410.4 177.9 69.2 1 754.0 10.6

Utilities  10 244.7 7 512.9 1 309.5 402.6 1 019.6 9.3

Construction  75 906.2 62 256.6 4 253.0 1 404.4 7 992.2 4.2

Manufacturing  15 384.5 10 254.1 518.1 450.4 4 162.0 9.2

Wholesale trade  16 963.5 9 773.9 1 502.4 1 247.0 4 440.1 8.0

Retail trade  27 470.5 18 642.8 1 790.0 1 194.9 5 842.9 5.3

Information services 5 622.0 4 833.4 S 59.6 95.5 16.7

Waste management, landscaping, or administrative/support services 10 709.3  5 497.6 1 383.3 451.6 3 376.8 8.5 Arts, entertainment, or recreation services 1 784.1  1 628.6 81.3 28.5 45.7 19.8 Accommodation or food services 5 816.3  3 700.9 331.7 165.4 1 618.3 11.8 Other services 35 776.2 33 997.0 1 077.2 254.1 447.9 6.6 Personal transportation  766 639.8 762 421.9 4 098.4 S 25.1 .8

Not reported  20 820.7 13 072.9 1 419.7 1 078.2 5 250.0 7.3 Not applicable2  1 761.4 1 654.3 33.6 37.8 35.7 13.8

BODY TYPE

Singleunit trucks  1 024 557.8 969 104.3 26 255.6 11 407.2 17 790.7 .7

Pickup 433 472.1 424 755.7 8 461.4 S S 1.1

Minivan 161 288.1 161 282.9 S V V 2.5

Other light vans  59 958.7 59 235.1 723.6 V V 4.6

Sport utility 314 836.7 314 595.7 240.9 V V 1.5

Armored  293.8 S 60.2 106.4 36.0 33.6

Beverage  582.6 S 58.2 190.8 325.3 7.8

Concrete mixer  1 201.0 S S .2 1 181.5 4.2

Concrete pumper  105.4 V S S 98.1 19.1

Crane  121.2 S 6.7 34.2 71.6 16.7

Curtainside  69.5 S S 7.8 49.2 19.8

Dump  7 244.1 362.3 1 049.7 764.7 5 067.3 2.2

Flatbed, stake, or platform 9 446.7  1 993.4 3 014.0 1 937.5 2 501.7 2.4

Low boy  20.9 S S S 15.6 26.9

Pole, logging, pulpwood, or pipe 391.1  S 1.3 16.9 372.7 8.8

Service, utility  3 214.6 830.1 1 344.3 549.9 490.3 4.2

Service, other  3 431.4 1 259.0 1 495.0 474.3 203.2 4.2

Street sweeper  80.2 12.9 53.3 6.9 7.1 15.5

Tank, dry bulk  191.9 S 11.2 36.2 142.2 12.3

Tank, liquids or gases  2 152.1 17.9 191.9 371.3 1 571.0 4.4

Tow/Wrecker 2 056.7 147.6 929.3 724.5 255.3 7.2

Trash, garbage, or recycling 2 244.9  7.3 84.7 100.4 2 052.5 4.2

Vacuum  224.1 S 24.7 26.8 168.5 11.9

Van, basic enclosed 11 271.0 1 791.0 3 626.8 3 971.0 1 882.2 4.5

Van, insulated nonrefrigerated 335.1  23.6 132.6 91.8 87.2 13.4

Van, insulated refrigerated 2 094.4  79.4 484.2 796.5 734.3 5.9

Van, open top  442.1 14.7 55.5 92.7 279.2 6.2 Van, step, walkin, or multistop 6 835.6  2 224.5 3 789.2 712.3 109.5 6.4 Van, other  940.9 349.8 381.5 160.5 49.0 7.6 Other  S SSSS S

Trucktractors  90 170.2 V V 358.5 89 811.7 .8 Automobile carrier  894.5 V V S 890.3 11.1

Beverage  636.1 V V 9.1 627.0 8.2 Curtainside  272.1 V V S 272.1 18.5

Dump  5 258.9 V V S 5 255.2 3.8

Flatbed, stake, or platform 9 576.0  V V 44.3 9 531.7 3.1

Livestock  729.4 V V S 727.6 10.1

Low boy  1 525.5 V V S 1 522.2 6.5 Mobile home toter  136.0 V V S 133.8 22.3

Open top  2 208.8 V V S 2 206.1 5.5

Pole, logging, pulpwood, or pipe 1 106.9  V V S 1 106.2 7.4

Tank, dry bulk  1 855.6 V V V 1 855.6 7.8 Tank, liquids or gases  5 565.1 V V S 5 559.4 4.4

Van, basic enclosed 47 381.8 V V 264.6 47 117.2 1.4 Van, dropframe  917.1 V V S 914.7 13.1

Van, insulated nonrefrigerated 1 341.0  V V V 1 341.0 8.4

Van, insulated refrigerated 10 742.1  V V 13.0 10 729.1 3.4 Other  23.1 V V S 22.3 27.2

Not applicable3  S VVSV S

ANNUAL MILES

Less than 5,000  28 808.3 26 534.3 808.0 515.7 950.4 2.2 5,000 to 9,999 121 794.6 116 881.4 2 269.3 832.5 1 811.4 1.8 10,000 to 19,999  494 022.3 477 789.4 8 647.8 2 519.1 5 066.1 1.0 20,000 to 29,999  209 195.6 193 588.9 6 475.9 3 000.9 6 129.9 2.5 30,000 to 49,999  127 078.7 108 024.4 5 068.0 2 629.9 11 356.2 3.9

50,000 to 74,999  55 029.7 36 134.3 1 980.3 1 259.2 15 655.8 6.4 75,000 or more  77 037.4 8 497.3 972.6 970.5 66 597.0 2.8 Not applicable2  1 761.4 1 654.3 33.6 37.8 35.7 13.8

PRIMARY RANGE OF OPERATION

Offtheroad 10 123.4 7 678.4 494.9 111.5 1 838.7 9.7

50 miles or less 705 948.5 664 929.5 13 591.3 5 990.3 21 437.4 .9

51 to 100 miles  120 933.5 101 434.9 4 774.2 1 641.5 13 082.8 3.1

101 to 200 miles  42 499.6 30 367.3 1 422.6 776.1 9 933.5 5.6

201 to 500 miles  32 482.5 14 640.6 1 157.1 679.5 16 005.3 5.7

501 miles or more  42 015.3 14 941.4 867.7 429.7 25 776.5 3.7

Not reported  158 963.9 133 457.9 3 914.1 2 099.3 19 492.7 2.4

Not applicable2  1 761.4 1 654.3 33.6 37.8 35.7 13.8

See footnotes at end of table.

Vehicle Inventory and Use Survey United States 47

U.S. Census Bureau, 2002 Economic Census
Table 6. Truck Miles by Vehicle Size: 2002Con.

[Millions. Estimates are based on data from the 2002 Vehicle Inventory and Use Survey. Because of rounding, estimates may not be additive]

Vehicular and operational characteristics

Vehicle size

Total Light Medium Lightheavy Heavyheavy

Coefficient of variation of total (percent)

PRIMARY JURISDICTION

Operated in Canada 313.5 228.4 S S 33.0 36.6

Operated in Mexico  S S S S 17.1 S

Operated within the home base state 930 033.4  844 881.0 21 800.9 8 997.4 54 354.2 .8

Operated in states other than the home base state 61 687.4  20 829.4 1 053.2 786.2 39 018.6 2.6

Not reported  119 815.4 100 423.7 3 350.7 1 897.1 14 143.8 2.7

Not applicable2  1 761.4 1 654.3 33.6 37.8 35.7 13.8

MONTHS OPERATED

12  862 979.6 752 430.7 20 926.9 8 978.4 80 643.7 .8 7 to 11  157 537.0 133 425.2 3 758.2 1 717.1 18 636.5 2.4 2 to 6  86 156.8 76 055.7 1 398.5 929.0 7 773.7 3.4 1 or less  6 293.2 5 538.5 138.4 103.4 512.9 9.7 Vehicle not used 1 761.4 1 654.3 33.6 37.8 35.7 13.8

AVERAGE WEIGHT (POUNDS)

Less than 6,001  741 532.5 741 532.5 N N N .9

6,001 to 8,500 188 475.9 188 475.9 N N N 2.5

8,501 to 10,000 39 095.8 39 095.8 N N N 6.3

10,001 to 14,000  15 186.1 N 15 186.1 N N 5.5

14,001 to 16,000  5 908.3 N 5 908.3 N N 8.7

16,001 to 19,500  5 161.2 N 5 161.2 N N 10.0

19,501 to 26,000  11 765.7 N N 11 765.7 N 2.6

26,001 to 33,000  5 845.4 N N N 5 845.4 3.3

33,001 to 40,000  3 769.6 N N N 3 769.6 4.3

40,001 to 50,000  6 697.6 N N N 6 697.6 3.1

50,001 to 60,000  8 950.4 N N N 8 950.4 3.3

60,001 to 80,000  77 489.4 N N N 77 489.4 .9

80,001 to 100,000  2 949.8 N N N 2 949.8 4.5

100,001 to 130,000  1 571.1 N N N 1 571.1 7.3

130,001 or more  329.1 N N N 329.1 10.5

TOTAL LENGTH (FEET)

Less than 20.0  865 812.7 850 982.2 9 701.2 2 507.7 2 621.6 .8

20.0 to 27.9  101 006.5 82 678.5 7 810.0 4 441.8 6 076.1 3.2

28.0 to 35.9  39 685.1 26 987.0 3 945.3 3 073.1 5 679.8 5.4

36.0 to 40.9  13 676.0 6 787.1 2 065.8 942.3 3 880.8 9.5

41.0 to 44.9  4 322.8 480.1 1 299.6 184.3 2 358.8 9.7

45.0 to 49.9  5 118.2 S 891.0 238.0 2 958.4 12.8

50.0 to 54.9  5 414.1 S 527.2 127.8 4 622.8 6.1

55.0 to 59.9  10 063.2 S S 41.9 9 987.6 2.9

60.0 to 64.9  17 561.5 S S 73.6 17 487.3 2.4

65.0 to 69.9  21 406.1 V S S 21 382.3 2.3

70.0 to 74.9  20 632.7 V S 112.1 20 520.0 2.5

75.0 to 79.9  8 955.8 V V S 8 955.7 4.4 80.0 or more  1 073.3 V V S 1 071.3 11.5

MILES PER GALLON

Less than 5  11 005.3 172.8 340.6 352.2 10 139.7 2.3

5 to 6.9  69 007.1 2 330.8 1 021.6 1 362.5 64 292.3 1.3

7 to 8.9  21 890.1 6 131.4 2 726.1 2 234.1 10 798.4 4.1

9 to 10.9 46 779.4 36 727.7 5 913.7 2 205.0 1 933.0 4.9

11 to 12.9 66 832.6 60 470.2 4 428.2 1 180.0 754.2 4.2

13 to 14.9 89 499.0 86 360.0 2 654.5 290.7 193.7 3.6

15 or more  629 026.3 623 841.5 4 495.7 421.5 267.6 1.1

15 to 20.9 494 122.2 489 145.6 4 287.5 421.5 267.6 1.3

21 to 24.9 87 864.7 87 767.0 S V V 3.6

25 or more  47 039.4 46 928.9 S V V 5.1

Not reported  178 926.9 151 415.6 4 641.6 3 681.8 19 187.9 2.2

Not applicable2  1 761.4 1 654.3 33.6 37.8 35.7 13.8

MODEL YEAR

2003  2 605.9 S 32.1 49.0 2 134.0 12.0

2002  76 980.1 66 116.4 1 046.6 713.5 9 103.5 3.6

2001  126 047.8 109 301.6 2 705.4 1 257.9 12 782.9 3.0

2000  141 768.8 117 724.5 3 034.3 1 541.2 19 468.7 2.8

1999  119 130.6 99 670.5 4 436.3 1 538.5 13 485.3 3.0

1998  102 522.3 90 194.9 1 973.3 814.6 9 539.6 3.4

1997  88 884.8 79 214.7 2 328.3 741.3 6 600.4 3.6

1996  70 503.7 62 121.9 1 461.4 670.5 6 249.9 3.9

1995  71 863.6 62 777.3 1 623.0 801.0 6 662.3 3.6

1994  58 481.2 53 002.0 1 025.7 408.9 4 044.6 4.2

1993  46 451.2 42 232.4 634.8 428.9 3 155.1 4.4

Pre1993  209 488.1 186 357.3 5 954.4 2 800.5 14 375.9 2.0

VEHICLE ACQUISITION

New 561 446.0 471 179.5 16 678.1 7 293.6 66 294.8 1.2

Used  473 940.8 431 411.0 7 685.6 3 584.0 31 260.2 1.3

Not reported  79 341.2 66 513.8 1 891.9 888.1 10 047.4 3.5

LEASE CHARACTERISTICS

Leased  100 995.2 65 505.3 2 482.5 2 543.2 30 464.1 3.0 Lessee  73 358.7 55 050.4 1 533.1 1 037.0 15 738.2 3.9 Vehicle only 16 667.3 437.2 1 280.9 1 035.5 13 913.7 2.7 Vehicle with driver  1 748.1 S V S 1 746.6 6.8

Not reported  82.6 V S S 77.9 27.1

Not applicable4  54 860.7 54 612.2 S V V 5.1 Lessor 22 281.4 5 744.4 919.9 1 483.4 14 133.7 4.3 Vehicle only 13 804.4 179.6 792.4 1 431.8 11 400.6 2.7 Vehicle with driver  2 657.2 S 7.5 S 2 609.4 6.9

Not reported  149.3 S S S 123.7 29.8

Not applicable4  5 670.6 5 552.4 S V V 15.1

Not reported  5 355.0 4 710.5 29.5 22.9 592.2 11.9

Not leased  591 796.8 516 359.5 15 352.8 6 055.2 54 029.4 1.1

Not reported  421 936.1 387 239.5 8 420.3 3 167.3 23 108.9 1.4

See footnotes at end of table.

48 United States Vehicle Inventory and Use Survey

U.S. Census Bureau, 2002 Economic Census
Table 6. Truck Miles by Vehicle Size: 2002Con.

[Millions. Estimates are based on data from the 2002 Vehicle Inventory and Use Survey. Because of rounding, estimates may not be additive]

Vehicular and operational characteristics

Vehicle size

Total Light Medium Lightheavy Heavyheavy

Coefficient of variation of total (percent)

LEASE CHARACTERISTICSCon.

Length of leasing agreement:

Leased  100 995.2 65 505.3 2 482.5 2 543.2 30 464.1 3.0

1 to 11 months  2 179.1 29.5 54.1 123.8 1 971.8 5.9

12 months or more 33 027.8 606.1 2 023.0 2 392.9 28 005.8 1.8

Not reported  554.7 S 38.7 26.5 486.6 12.4

Not applicable4  65 233.5 64 866.8 S V V 4.6

Provisions of lease5:

Financing only 20 602.6 547.7 1 559.7 1 546.6 16 948.6 2.4

Full maintenance  11 813.0 123.4 635.9 1 320.0 9 733.7 2.8

Payment of taxes  13 660.5 189.9 816.5 1 359.7 11 294.4 2.5

Obtaining licenses and permits 14 408.6  154.5 729.9 1 353.2 12 171.1 2.5

Recordkeeping  8 125.2 103.0 424.7 711.1 6 886.4 3.5

Fuel contract  4 143.2 48.2 228.7 300.0 3 566.3 5.2

PRIMARY OPERATOR CLASSIFICATION

Private  239 426.5 185 119.6 16 103.0 7 114.0 31 089.9 2.1 Motor carrier  62 059.9 4 590.8 3 267.3 2 122.2 52 079.7 2.0 Owner operator 24 402.0 5 238.9 1 047.8 634.1 17 481.2 5.5 Rental 20 434.0 10 078.1 1 701.7 1 763.2 6 890.9 6.2 Personal transportation  766 644.3 762 422.6 4 102.3 S 25.1 .8

Not applicable2  1 761.4 1 654.3 33.6 37.8 35.7 13.8

Forhire characteristics:

Type of carrier:

Contract  41 703.7 315.9 1 800.8 1 313.7 38 273.3 1.8 Common  28 065.2 334.7 1 587.9 958.3 25 184.4 1.9 Not reported  7 445.6 287.2 570.8 484.3 6 103.2 3.8 Not applicable6  1 037 513.5 968 166.5 22 296.0 9 009.4 38 041.6 .7 Type of service: Truckload 55 846.8 230.3 938.6 1 055.3 53 622.6 1.2 Lessthan truckload  14 289.3 419.3 2 444.7 1 157.8 10 267.4 3.9 Not reported  7 078.0 288.1 576.2 543.2 5 670.5 3.9 Not applicable6  1 037 513.9 968 166.5 22 296.0 9 009.4 38 041.9 .7 Source of hauls:

Shippers or receivers 57 610.6 511.1 2 850.6 1 609.8 52 639.2 1.4 Brokers 6 501.9 S 123.1 116.2 6 241.9 4.1

Centralized markets or exchanges 1 042.7  19.4 57.8 138.9 826.6 10.9 Other  V VVVV N Not reported  12 059.2 386.5 928.1 891.4 9 853.2 2.9 Not applicable6  1 037 513.5 968 166.5 22 296.0 9 009.4 38 041.6 .7

HAZARDOUS MATERIALS CARRIED7

Carrying hazardous materials 23 361.8  130.9 315.6 510.3 22 405.0 2.4

Not carrying hazardous materials 92 985.6  6 888.2 12 389.0 7 788.2 65 920.2 .9

Not reported  17 261.5 1 284.8 2 257.3 1 424.4 12 295.0 2.2

Not applicable8  981 119.1 960 800.3 11 293.6 2 042.8 6 982.3 .7

EQUIPMENT TYPE5 9

Aerial work platform/bucket  1 514.3 341.0 517.7 302.8 352.8 9.2 Air bag(s) (safety device only) 687 147.0  660 174.4 9 220.1 1 705.8 16 046.6 1.0 Air compressor (except air brakes) 15 299.2  216.0 717.3 631.3 13 734.7 2.4 Airconditioning 952 431.2 836 600.8 17 392.1 7 190.6 91 247.6 .7 Air springs  45 806.8 56.8 221.6 745.8 44 782.7 1.4

Antilock brake system  732 169.5 651 975.4 13 738.1 4 564.9 61 891.1 .9 Collision warning system 2 553.2 85.8 600.1 71.9 1 795.3 6.5 Computerized drive train control unit 151 461.7  141 155.5 1 676.9 438.1 8 191.2 2.8 Crane  1 522.8 119.7 397.4 288.0 717.8 5.4 Electronic vehicle identification device 13 188.0  40.6 109.1 102.5 12 935.9 3.4

Engine retarder/brake  58 553.7 234.7 855.6 505.2 56 958.2 1.2 Frontwheel drive  405 069.9 399 843.6 5 098.3 S S 1.4 Hoist  5 423.4 255.7 868.0 661.5 3 638.2 2.5 Idlereducing technology (portable auxiliary pack, electrification, etc.) 12 561.3  25.2 626.8 322.7 11 586.6 3.6 Internet access  1 262.8 S S S 1 219.3 8.3

Lift gate  5 364.5 651.9 1 813.6 1 816.2 1 082.9 3.3 Mounting bar for snowplow 11 441.3  10 726.8 523.6 45.8 145.1 9.2 Navigational system 1 628.2 S S S 1 537.6 8.4 Power takeoff 26 861.0 383.6 2 149.8 1 988.3 22 339.2 1.5 Radial tires 734 855.7 631 436.0 17 918.4 6 888.3 78 612.9 .9

Reflective material in addition to those required by law 24 333.9  748.5 2 400.7 1 393.9 19 790.8 2.1

Road speed governor  66 666.2 714.2 3 783.5 3 416.7 58 751.8 1.3

Toolbox  129 942.8 99 253.1 7 984.1 2 966.9 19 738.7 3.0

Trip recorder or onboard computer with communication capabilities 66 964.4  42 213.8 1 899.5 653.9 22 197.2 3.6

Trip recorder or onboard computer without communication capabilities 188 654.5  176 746.0 2 608.7 212.2 9 087.6 2.3

Vehicle control aids for handicapped drivers 1 540.0  1 414.6 S V V 27.6

Wheelchair lift  1 984.6 1 981.3 S V V 21.7

Winch  9 266.1 4 826.4 1 507.2 873.5 2 059.0 8.6

Transmission type: Automatic 800 969.4 776 427.1 15 217.8 3 039.4 6 285.0 .9 Manual  256 280.1 150 901.8 9 176.0 7 000.8 89 201.4 1.6 Semiautomated manual  2 353.0 1 066.6 S 26.6 1 236.3 20.5 Automated manual 1 995.9 1 048.9 S 11.2 925.1 15.6

Not reported  53 129.7 39 659.8 1 827.6 1 687.8 9 954.6 4.1

Braking system:

Hydraulic (standard) 18 808.6 4 538.6 7 043.5 3 798.8 3 427.8 2.9 Hydraulic with power assist 14 808.3  3 510.7 6 622.9 3 081.7 1 593.1 3.2

Air  96 707.6 138.5 798.4 2 921.9 92 848.8 .8

Other  V VVVV N

Not reported  14 847.9 1 046.9 2 359.8 1 738.9 9 702.2 2.5

Not applicable10  969 555.5 959 869.5 9 431.0 S S .7

See footnotes at end of table.

Vehicle Inventory and Use Survey United States 49

U.S. Census Bureau, 2002 Economic Census
Table 6. Truck Miles by Vehicle Size: 2002Con.

[Millions. Estimates are based on data from the 2002 Vehicle Inventory and Use Survey. Because of rounding, estimates may not be additive]

Vehicular and operational characteristics

Vehicle size

Total Light Medium Lightheavy Heavyheavy

Coefficient of variation of total (percent)

FUEL TYPE AND ENGINE SIZE

Fuel type:

Gasoline 936 146.5 922 152.4 10 757.8 2 112.9 1 123.5 .7

Diesel  167 407.2 36 527.6 15 249.9 9 401.4 106 228.2 1.5

Natural gas  979.0 912.7 S S S 24.9

Propane  575.9 104.1 153.9 174.7 143.2 11.6

Alcohol fuels  1 560.2 1 547.3 S S S 14.1

Electricity  S SVVV S

Combination  5 080.3 5 017.1 21.7 11.3 30.2 13.5

Other  V VVVV N

Not reported  1 217.5 1 188.8 6.9 1.7 20.1 30.7

Not applicable2  1 761.4 1 654.3 33.6 37.8 35.7 13.8

Cylinders11:

4 cylinders  127 973.3 125 338.3 1 963.8 290.7 380.6 2.9

6 cylinders  596 047.2 480 100.2 5 716.1 7 236.3 102 994.6 1.0

8 cylinders  379 361.3 356 395.1 17 181.6 3 813.2 1 971.5 1.6

Other  11 346.1 7 270.7 1 394.1 425.5 2 255.8 8.8

Cubic inch displacement11:

Gasoline fuel  936 146.5 922 152.4 10 757.8 2 112.9 1 123.5 .7

Less than 200  233 334.4 233 179.2 S 57.8 S 2.1

200 to 299  388 620.3 387 359.6 1 100.2 140.3 S 1.5

300 to 349  149 604.2 148 419.7 1 130.3 21.9 S 2.7

350 to 399  133 757.0 127 943.0 4 594.1 826.6 393.3 2.9

400 or more 24 900.5 20 241.1 3 531.7 749.4 378.2 5.4

Not available  5 930.3 5 009.8 308.1 316.9 295.4 14.3

Diesel fuel  167 407.2 36 527.6 15 249.9 9 401.4 106 228.2 1.5

Less than 400  21 974.7 13 250.3 5 643.3 1 869.8 1 211.3 5.2

400 to 599  46 852.3 22 919.3 9 308.7 6 924.6 7 699.7 4.7

600 to 799  52 169.5 9.1 54.2 275.3 51 830.8 1.3

800 or more 32 836.0 272.2 152.3 190.5 32 221.1 1.7

Not available  13 574.6 S 91.3 141.3 13 265.3 2.7

Other fuel 8 195.4 7 581.2 207.4 211.9 194.9 9.3

Less than 400  7 586.4 7 401.2 82.7 82.8 19.6 10.0

400 or more 580.1 167.6 122.0 121.1 169.5 15.5

Not available  28.9 S S 8.0 5.8 26.3

Not reported  1 217.5 1 188.8 6.9 1.7 20.1 30.7

Not applicable2  1 761.4 1 654.3 33.6 37.8 35.7 13.8

REFUELING LOCATION

Gas station  929 925.6 892 771.6 17 992.5 5 668.1 13 493.4 .7 Truck stop  62 738.0 9 494.8 1 864.0 1 767.8 49 611.3 2.6 Own facility (including home, farm, ranch, onsite by mobile supplier, etc.) 60 383.5  16 973.8 4 753.6 3 123.7 35 532.4 2.5 Other company’s/contractor’s facility not open to the public 8 667.2  4 389.8 382.7 503.5 3 391.1 9.6 Other  421.6 404.5 S S S 32.0

Not reported  50 830.8 43 415.5 1 225.0 660.4 5 530.0 4.0 Not applicable2  1 761.4 1 654.3 33.6 37.8 35.7 13.8

MAINTENANCE5

General maintenance performed by:

None performed  15 079.6 14 662.4 96.8 48.2 272.3 9.7

Companyowned maintenance facility 154 498.0  70 059.3 9 393.5 5 207.0 69 838.1 2.1

General repair business or private mechanic 496 550.5  450 423.3 9 478.3 3 931.7 32 717.1 1.3

Dealership service department 298 912.2  274 039.5 4 908.9 1 839.1 18 124.6 1.8

Leasing company  4 464.6 1 153.0 181.1 321.1 2 809.4 7.7

Individual not employed/paid by any maintenance type facility 346 395.8  328 212.9 5 433.3 1 563.6 11 185.9 1.6

Other  V VVVV N

Not reported  54 245.1 46 390.5 1 152.6 656.8 6 045.1 4.0

Not applicable2  1 761.4 1 654.3 33.6 37.8 35.7 13.8

Extensive repairs performed by:

None performed  858 631.1 758 331.6 18 283.9 7 894.4 74 121.2 .8 Companyowned maintenance facility 22 141.2  10 847.6 1 216.0 591.7 9 485.9 6.2 General repair business or private mechanic 86 267.8  73 584.7 2 303.0 957.4 9 422.6 3.9 Dealership service department 61 277.4  49 734.1 2 047.8 666.4 8 829.1 4.2 Leasing company  987.0 S 29.7 88.4 318.5 40.1

Component distributorship (engine, transmission, body, etc.) 6 180.9  4 069.5 S 106.3 1 532.8 17.3

Individual not employed/paid by any repair type facility 38 970.3  35 444.2 1 233.2 228.4 2 064.6 5.3

Other  V VVVV N

Not reported  2 679.6 2 600.8 10.0 S 38.8 26.3

Not applicable2  1 761.4 1 654.3 33.6 37.8 35.7 13.8

TRUCK TYPE AND AXLE ARRANGEMENT

Singleunit trucks and trucktractors without trailer 1 002 652.1  955 691.0 20 620.8 10 563.9 15 776.4 .7 2 axles  992 916.9 955 645.1 20 515.8 10 426.0 6 330.0 .7 3 axles  6 784.7 17.4 92.4 126.9 6 548.0 2.1 4 axles  2 303.5 S S 7.7 2 292.2 3.1

5 axles or more 547.4 V V S 546.0 6.5

Not reported  99.6 28.0 9.5 1.9 60.2 22.0

Combinations  112 075.9 13 413.3 5 634.8 1 201.8 91 826.1 1.7

Singleunit trucks with trailer 21 905.7  13 413.3 5 634.8 843.3 2 014.4 8.1

3 axles  6 550.0 5 625.5 577.9 143.6 203.1 16.8

4 axles  12 549.8 6 733.7 4 852.9 502.4 460.7 10.3

5 axles or more 2 103.8 S S 42.8 1 265.3 24.0

Not reported  702.0 404.4 57.9 S 85.3 31.1

Trucktractors with single trailer 84 307.7  V V 358.5 83 949.2 .8

3 axles  1 404.5 V V 32.2 1 372.2 6.1

4 axles  4 594.3 V V 134.2 4 460.2 4.4

5 axles or more 73 112.2 V V 143.9 72 968.2 .9

Not reported  5 196.7 V V 48.2 5 148.6 4.2

Trucktractors with double trailers 5 617.4  V V V 5 617.4 5.3

5 axles  3 558.0 V V V 3 558.0 7.0

6 axles  934.7 V V V 934.7 14.1

7 axles  313.5 V V V 313.5 16.9

8 axles or more 664.9 V V V 664.9 10.8

Not reported  146.3 V V V 146.3 27.7

See footnotes at end of table.

50 United States Vehicle Inventory and Use Survey

U.S. Census Bureau, 2002 Economic Census
Table 6. Truck Miles by Vehicle Size: 2002Con.

[Millions. Estimates are based on data from the 2002 Vehicle Inventory and Use Survey. Because of rounding, estimates may not be additive]

Vehicular and operational characteristics

Vehicle size

Total Light Medium Lightheavy Heavyheavy

Coefficient of variation of total (percent)

TRUCK TYPE AND AXLE ARRANGEMENTCon.

CombinationsCon.

Trucktractors with triple trailers 245.1  V V V 245.1 33.2

7 axles  220.1 V V V 220.1 36.8

8 axles  S VVVS S

9 axles  S VVVS S

10 axles or more S VVVS S

Not reported  S VVVS S

Driving axles:

1  617 333.0 568 541.1 19 834.6 11 085.8 17 871.5 1.1

2  496 730.2 400 488.4 6 410.7 676.2 89 154.9 1.1

3 or more  376.0 V S S 373.9 7.5

Not reported  288.8 74.8 10.0 1.9 202.2 14.1

Total liftable axles and locations12:

None 139 553.4 9 227.7 16 794.1 11 487.7 102 043.8 .7

1  4 451.5 5.7 16.7 S 4 386.2 2.9

Forward of the drive axle 2 976.9  S S S 2 937.7 3.6

Below the chassis 588.4 S 9.8 S 568.2 8.3

Beyond the chassis  234.1 V V V 234.1 11.0

Not reported  652.2 S S S 646.2 7.7

2 or more  651.5 V V S 649.9 6.0

Forward of the drive axle  527.8 V V S 526.3 6.2

Below the chassis 235.6 V V S 234.4 10.4

Beyond the chassis  129.6 V V V 129.6 9.9

Not reported  32.7 V V S 32.5 27.8

Not reported  516.2 1.4 13.7 9.0 492.0 9.3

Not applicable10  969 555.5 959 869.5 9 431.0 S S .7

Total liftable axles and number of braking axles:

None 139 553.4 9 227.7 16 794.1 11 487.7 102 043.8 .7

1  4 451.5 5.7 16.7 S 4 386.2 2.9

0 braking  576.7 S S S 568.8 8.0

1 braking  3 687.4 S 11.7 S 3 641.8 3.2

Not reported  187.4 S S S 175.6 15.3

2 or more  651.5 V V S 649.9 6.0

0 braking  18.9 V V V 18.9 28.2

1 braking  26.0 V V S 24.8 30.4

2 or more braking  583.4 V V S 583.1 6.5

Not reported  23.1 V V V 23.1 30.7

Not reported  516.2 1.4 13.7 9.0 492.0 9.3

Not applicable10  969 555.5 959 869.5 9 431.0 S S .7

CAB TYPE

Conventional cab  127 623.2 8 312.9 12 980.7 10 421.2 95 908.4 .8 With sleeper  49 177.6 V V 102.2 49 075.4 1.4 Without sleeper 72 741.0 8 312.9 12 980.7 10 287.3 41 160.0 1.2 Not reported  5 704.7 V V S 5 673.0 4.4

Cab over engine  17 088.5 832.9 3 730.9 1 072.2 11 452.5 2.3

With sleeper  7 042.5 V V 38.7 7 003.9 4.7

Without sleeper 8 994.1 832.9 3 730.9 1 033.5 3 396.7 2.1

Not reported  1 051.9 V V V 1 051.9 12.4

Cab forward of engine  284.3 37.2 68.2 S 149.6 13.8

Cab beside engine  101.0 41.8 41.5 S 14.3 17.0

Not reported  75.4 S 3.2 S 47.0 25.9

Not applicable10  969 555.5 959 869.5 9 431.0 S S .7

N Not available. S Estimate does not meet publication standards because of high sampling variability or poor response quality. V Represents an estimate of less than 50 vehicles, 50,000

miles, or 0.05 percent.

1Comparability of estimates may vary across survey years due to changes in category definitions.

2Vehicles not in use. When the respondent had partialyear ownership of the vehicle, annual miles were adjusted to reflect miles traveled when not owned by the respondent. 3Trucktractors not in use. 4Lessees or lessors of pickups, minivans, other light vans, and sport utilities.

5Detail lines do not add to total trucks because items were not applicable or multiple responses were possible.

6Includes pickups, minivans, other light vans, and sport utilities; all other vehicles that are private, rental, or used for personal transportation; and vehicles not in use. 7Distributed miles data are available in Table 8.

8Includes pickups, minivans, other light vans, and sport utilities; all other vehicles that are rental or used for personal transportation; and vehicles not in use. 9Pickups, minivans, other light vans, and sport utilites, in the Equipment Type section, were only required to report for aerial work platform/bucket, air bag(s), airconditioning, antilock brake

system, computerized drive train control unit, frontwheel drive, mounting bar for snowplow, radial tires, toolbox, trip recorder, vehicle control aids for handicapped drivers, wheelchair lift, and winch. 10Pickups, minivans, other light vans, and sport utilities. 11Data were derived from administrative records. 12Detail lines do not add to the subtotal line because items were not applicable or multiple responses were possible. When 2 or 3 liftable axles were indicated, respondents properly reported

multiple responses, therefore detail lines will be significantly greater than the corresponding subtotal line.

Note: Use caution when assessing the true increase or decrease in any particular data line. Large changes in the "not reported" or "not applicable" estimates should be taken into account.

Note: The Appendix provides instructions for approximating unpublished coefficients of variation (CVs). CVs estimated from sample data are available on request. The Introduction

gives information on confidentiality protection, sampling error, nonsampling error, sample design, and definitions. Links to this information on the Internet may be found

at www.census.gov/svsd/www/02vehinv.html.

Vehicle Inventory and Use Survey United States 51

U.S. Census Bureau, 2002 Economic Census
Table 7. Truck Miles by Truck Type: 2002

[Millions. Estimates are based on data from the 2002 Vehicle Inventory and Use Survey. Because of rounding, estimates may not be additive]

Vehicular and operational characteristics

Truck type

Combination

Total

Singleunit

trucks and

trucktractors

without trailer Total

Singleunit

truck with

trailer

Trucktractor

with single

trailer

Trucktractor

with double

trailers

Trucktractor

with triple

trailers

Coefficient of

variation of

total

(percent)

Total 1 114 728.0  1 002 652.1 112 075.9 21 905.7 84 307.7 5 617.4 245.1 X

Coefficient of variation (percent) .6  .7 1.7 8.1 .8 5.3 33.2 X

BUSINESS1

Forhire transportation or warehousing 72 272.8  13 733.3 58 539.5 1 079.2 52 947.5 4 274.2 238.7 2.2

Vehicle leasing or rental 20 024.6  14 487.9 5 536.7 S 5 514.6 S V 6.3

Agriculture, forestry, fishing, or hunting 24 120.0  17 523.3 6 596.7 2 120.1 4 131.1 345.4 V 5.8

Mining  3 411.5 2 196.5 1 215.1 140.9 986.6 87.5 V 10.6

Utilities 10 244.7  9 077.0 1 167.7 890.8 273.9 S V 9.3

Construction 75 906.2  68 968.0 6 938.1 3 824.7 2 724.8 382.8 S 4.2

Manufacturing 15 384.5  11 912.9 3 471.6 240.2 3 171.0 60.4 V 9.2

Wholesale trade 16 963.5  13 552.8 3 410.7 297.0 2 970.0 143.7 V 8.0

Retail trade 27 470.5  21 608.5 5 862.0 1 062.1 4 735.5 S S 5.3

Information services 5 622.0  5 586.4 35.6 12.7 22.9 V V 16.7

Waste management, landscaping, or administrative/support services 10 709.3  7 784.5 2 924.8 2 020.3 882.5 21.9 V 8.5

Arts, entertainment, or recreation services 1 784.1  1 576.7 207.4 S 32.8 S V 19.8

Accommodation or food services 5 816.3  4 323.0 1 493.4 15.3 1 364.2 S V 11.8

Other services 35 776.2  35 354.6 421.6 130.1 291.5 S V 6.6

Personal transportation 766 639.8  757 379.8 9 260.0 9 256.8 3.3 V V .8

Not reported 20 820.7  15 825.6 4 995.1 627.7 4 255.5 111.8 V 7.3

Not applicable2  1 761.4 1 761.4 V V V VV 13.8

BODY TYPE

Singleunit trucks 1 024 557.8  1 002 652.1 21 905.7 21 905.7 N N N .7

Pickup 433 472.1  418 992.9 14 479.2 14 479.2 N N N 1.1

Minivan 161 288.1  161 070.3 S S N N N 2.5

Other light vans 59 958.7  59 453.4 505.2 505.2 N N N 4.6

Sport utility 314 836.7  311 976.9 2 859.8 2 859.8 N N N 1.5

Armored 293.8  293.8 V V N N N 33.6

Beverage 582.6  571.9 10.7 10.7 N N N 7.8

Concrete mixer 1 201.0  1 165.1 35.9 35.9 N N N 4.2

Concrete pumper 105.4  103.9 S S N N N 19.1

Crane  121.2 120.1 S S N N N 16.7

Curtainside 69.5  66.4 S S N N N 19.8

Dump 7 244.1  5 987.0 1 257.1 1 257.1 N N N 2.2 Flatbed, stake, or platform 9 446.7  8 155.3 1 291.4 1 291.4 N N N 2.4 Low boy 20.9  S 15.0 15.0 N N N 26.9

Pole, logging, pulpwood, or pipe 391.1  122.9 268.2 268.2 N N N 8.8 Service, utility 3 214.6  2 946.7 267.9 267.9 N N N 4.2

Service, other 3 431.4  3 270.5 161.0 161.0 N N N 4.2

Street sweeper 80.2  80.2 V V N N N 15.5

Tank, dry bulk 191.9  185.8 S S N N N 12.3

Tank, liquids or gases 2 152.1  1 950.8 201.3 201.3 N N N 4.4

Tow/Wrecker 2 056.7  2 041.1 S S N N N 7.2

Trash, garbage, or recycling 2 244.9  2 244.1 S S N N N 4.2

Vacuum 224.1  217.1 7.0 7.0 N N N 11.9

Van, basic enclosed 11 271.0  11 134.4 136.7 136.7 N N N 4.5

Van, insulated nonrefrigerated 335.1  333.0 S S N N N 13.4

Van, insulated refrigerated 2 094.4  2 048.2 46.2 46.2 N N N 5.9

Van, open top 442.1  408.8 33.3 33.3 N N N 6.2

Van, step, walkin, or multistop 6 835.6  6 772.0 63.5 63.5 N N N 6.4

Van, other 940.9  922.9 18.0 18.0 N N N 7.6

Other  S S S S N NN S

Trucktractors 90 170.2  S 90 170.2 N 84 307.7 5 617.4 245.1 .8 Automobile carrier 894.5  N 894.5 N 894.5 V V 11.1 Beverage 636.1  N 636.1 N 627.4 S V 8.2

Curtainside 272.1  N 272.1 N 269.7 S V 18.5

Dump 5 258.9  N 5 258.9 N 4 573.5 683.9 S 3.8

Flatbed, stake, or platform 9 576.0  N 9 576.0 N 9 136.9 439.1 V 3.1

Livestock 729.4  N 729.4 N 725.4 S V 10.1

Low boy 1 525.5  N 1 525.5 N 1 505.5 S 14.5 6.5

Mobile home toter 136.0  N 136.0 N 136.0 V V 22.3

Open top 2 208.8  N 2 208.8 N 2 120.5 88.4 V 5.5

Pole, logging, pulpwood, or pipe 1 106.9  N 1 106.9 N 1 095.4 S V 7.4

Tank, dry bulk 1 855.6  N 1 855.6 N 1 644.3 211.4 V 7.8 Tank, liquids or gases 5 565.1  N 5 565.1 N 5 411.9 153.3 V 4.4 Van, basic enclosed 47 381.8  N 47 381.8 N 43 770.1 3 385.5 226.3 1.4 Van, dropframe 917.1  N 917.1 N 488.3 428.8 V 13.1 Van, insulated nonrefrigerated 1 341.0  N 1 341.0 N 1 283.5 S V 8.4

Van, insulated refrigerated 10 742.1  N 10 742.1 N 10 601.8 137.4 S 3.4

Other  23.1 N 23.1 N 23.1 V V 27.2 Not applicable3  S S VN V VV S

ANNUAL MILES

Less than 5,000 28 808.3  27 564.0 1 244.4 983.0 255.1 6.2 V 2.2

5,000 to 9,999 121 794.6  118 933.6 2 861.0 2 355.7 493.7 11.5 V 1.8

10,000 to 19,999 494 022.3  485 414.5 8 607.9 6 942.5 1 617.7 47.7 V 1.0

20,000 to 29,999 209 195.6  203 255.2 5 940.4 3 368.9 2 494.9 72.4 S 2.5

30,000 to 49,999 127 078.7  115 918.3 11 160.3 4 001.6 6 771.8 386.6 S 3.9

50,000 to 74,999 55 029.7  39 650.3 15 379.3 2 366.6 12 239.6 770.9 2.3 6.4

75,000 or more 77 037.4  10 154.8 66 882.6 1 887.3 60 435.0 4 322.0 238.4 2.8

Not applicable2  1 761.4 1 761.4 V V V VV 13.8

See footnotes at end of table.

52 United States Vehicle Inventory and Use Survey

U.S. Census Bureau, 2002 Economic Census
Table 7. Truck Miles by Truck Type: 2002Con.

[Millions. Estimates are based on data from the 2002 Vehicle Inventory and Use Survey. Because of rounding, estimates may not be additive]

Vehicular and operational characteristics

Truck type

Combination

Total

Singleunit

trucks and

trucktractors

without trailer Total

Singleunit

truck with

trailer

Trucktractor

with single

trailer

Trucktractor

with double

trailers

Trucktractor

with triple

trailers

Coefficient of

variation of

total

(percent)

PRIMARY RANGE OF OPERATION

Offtheroad 10 123.4  7 702.0 2 421.5 S 1 376.4 S V 9.7

50 miles or less 705 948.5  685 077.8 20 870.7 9 802.8 10 407.2 656.1 S .9

51 to 100 miles 120 933.5  107 974.9 12 958.6 3 145.8 9 227.3 585.5 V 3.1

101 to 200 miles 42 499.6  31 804.5 10 695.1 1 658.5 7 960.3 1 067.2 S 5.6

201 to 500 miles 32 482.5  15 396.7 17 085.8 1 390.0 14 087.8 1 562.8 S 5.7

501 miles or more 42 015.3  15 070.0 26 945.4 1 290.0 24 186.0 1 283.4 185.8 3.7

Not reported 158 963.9  137 864.9 21 098.9 3 585.4 17 062.7 450.4 S 2.4

Not applicable2  1 761.4 1 761.4 V V V VV 13.8

PRIMARY JURISDICTION

Operated in Canada 313.5  260.1 53.5 S 29.0 V V 36.6

Operated in Mexico S  S 18.5 S 18.2 V V S

Operated within the home base state 930 033.4  873 116.6 56 916.8 17 960.1 35 597.3 3 315.4 S .8

Operated in states other than the home base state 61 687.4  21 813.1 39 874.3 1 261.3 36 499.2 1 917.6 196.2 2.6 Not reported 119 815.4  104 602.6 15 212.9 2 659.5 12 164.1 384.3 S 2.7

Not applicable2  1 761.4 1 761.4 V V V VV 13.8

MONTHS OPERATED

12 862 979.6 777 840.1 85 139.5 16 564.7 63 981.9 4 380.2 212.7 .8

7 to 11 157 537.0  138 927.3 18 609.7 3 691.9 14 170.2 742.7 S 2.4

2 to 6 86 156.8  78 281.3 7 875.4 1 590.8 5 788.5 468.7 S 3.4

1 or less 6 293.2  5 842.0 451.2 58.4 367.1 S V 9.7

Vehicle not used 1 761.4  1 761.4 V V V VV 13.8

VEHICLE SIZE

Light 969 104.3  955 691.0 13 413.3 13 413.3 V V V .7

Medium 26 255.6  20 620.8 5 634.8 5 634.8 V V V 4.2

Lightheavy 11 765.7  10 563.9 1 201.8 843.3 358.5 V V 2.6

Heavyheavy 107 602.4  15 776.4 91 826.1 2 014.4 83 949.2 5 617.4 245.1 .7

AVERAGE WEIGHT (POUNDS)

Less than 6,001 741 532.5  736 719.8 4 812.7 4 812.7 V V V .9 6,001 to 8,500 188 475.9  182 989.5 5 486.4 5 486.4 V V V 2.5 8,501 to 10,000 39 095.8  35 981.7 3 114.2 3 114.2 V V V 6.3 10,001 to 14,000 15 186.1  12 244.3 2 941.8 2 941.8 V V V 5.5 14,001 to 16,000 5 908.3  4 508.6 1 399.7 1 399.7 V V V 8.7

16,001 to 19,500 5 161.2  3 867.9 1 293.3 1 293.3 V V V 10.0

19,501 to 26,000 11 765.7  10 563.9 1 201.8 843.3 358.5 V V 2.6

26,001 to 33,000 5 845.4  4 736.0 1 109.3 300.5 780.5 S V 3.3

33,001 to 40,000 3 769.6  1 615.0 2 154.6 349.7 1 716.4 88.5 V 4.3

40,001 to 50,000 6 697.6  2 352.4 4 345.2 201.9 4 051.8 91.5 V 3.1

50,001 to 60,000 8 950.4  2 880.8 6 069.6 133.5 5 680.8 255.2 V 3.3

60,001 to 80,000 77 489.4  3 985.4 73 504.0 741.1 68 375.7 4 377.7 S .9

80,001 to 100,000 2 949.8  182.4 2 767.5 176.3 2 435.0 109.1 47.1 4.5

100,001 to 130,000 1 571.1  24.3 1 546.8 103.1 785.9 483.2 174.6 7.3

130,001 or more 329.1  S 329.0 S 123.1 183.9 13.9 10.5

TOTAL LENGTH (FEET)

Less than 20.0 865 812.7  865 812.7 V V V V V .8

20.0 to 27.9 101 006.5  96 585.7 4 420.8 4 420.8 V V V 3.2

28.0 to 35.9 39 685.1  32 197.1 7 488.0 7 152.0 336.0 V V 5.4

36.0 to 40.9 13 676.0  6 817.7 6 858.3 4 375.6 2 482.8 V V 9.5

41.0 to 44.9 4 322.8  683.4 3 639.4 1 687.7 1 951.7 V V 9.7

45.0 to 49.9 5 118.2  364.8 4 753.4 2 217.8 2 520.1 S V 12.8

50.0 to 54.9 5 414.1  187.7 5 226.4 1 052.4 4 147.1 26.9 V 6.1

55.0 to 59.9 10 063.2  S 10 063.1 307.8 9 645.6 109.8 V 2.9

60.0 to 64.9 17 561.5  S 17 558.6 362.4 16 742.0 454.1 V 2.4

65.0 to 69.9 21 406.1  V 21 406.1 184.3 19 712.5 1 509.3 V 2.3

70.0 to 74.9 20 632.7  V 20 632.7 86.7 18 812.2 1 733.8 V 2.5

75.0 to 79.9 8 955.8  V 8 955.8 35.4 7 810.6 1 109.8 V 4.4

80.0 or more 1 073.3  V 1 073.3 22.9 147.1 658.2 245.1 11.5

MILES PER GALLON

Less than 5 11 005.3  3 601.5 7 403.8 378.5 6 472.7 529.0 23.7 2.3

5 to 6.9 69 007.1  9 500.6 59 506.5 956.9 54 714.3 3 650.9 184.4 1.3

7 to 8.9 21 890.1  12 864.0 9 026.0 696.0 7 348.4 980.0 S 4.1

9 to 10.9 46 779.4  43 713.6 3 065.7 2 545.8 500.3 S V 4.9

11 to 12.9 66 832.6  62 964.7 3 867.8 3 675.4 187.9 S V 4.2

13 to 14.9 89 499.0  86 792.9 2 706.1 2 663.4 42.5 S V 3.6

15 or more 629 026.3  620 860.9 8 165.4 8 123.4 36.0 S V 1.1

15 to 20.9 494 122.2  486 444.6 7 677.6 7 635.7 36.0 S V 1.3

21 to 24.9 87 864.7  87 443.6 421.1 421.1 V V V 3.6

25 or more 47 039.4  46 972.7 S S V V V 5.1

Not reported 178 926.9  160 592.4 18 334.4 2 866.3 15 005.7 427.0 S 2.2

Not applicable2  1 761.4 1 761.4 V V V VV 13.8

See footnotes at end of table.

Vehicle Inventory and Use Survey United States 53

U.S. Census Bureau, 2002 Economic Census
Table 7. Truck Miles by Truck Type: 2002Con.

[Millions. Estimates are based on data from the 2002 Vehicle Inventory and Use Survey. Because of rounding, estimates may not be additive]

Vehicular and operational characteristics

Truck type

Combination

Total

Singleunit

trucks and

trucktractors

without trailer Total

Singleunit

truck with

trailer

Trucktractor

with single

trailer

Trucktractor

with double

trailers

Trucktractor

with triple

trailers

Coefficient of

variation of

total

(percent)

MODEL YEAR

2003  2 605.9 586.1 2 019.8 S 1 850.7 159.6 V 12.0

2002  76 980.1 67 874.5 9 105.6 787.6 7 721.5 581.7 14.8 3.6

2001 126 047.8  112 233.6 13 814.1 2 233.0 10 779.6 714.1 S 3.0

2000 141 768.8  122 208.6 19 560.2 2 007.1 16 646.7 858.7 S 2.8

1999 119 130.6  104 516.0 14 614.6 2 652.6 11 566.0 394.0 S 3.0

1998 102 522.3  92 317.5 10 204.9 1 902.5 7 643.8 657.3 S 3.4

1997  88 884.8 81 028.9 7 855.9 2 513.7 4 927.0 395.1 S 3.6

1996  70 503.7 64 248.1 6 255.6 956.6 4 915.2 380.0 S 3.9

1995  71 863.6 65 182.0 6 681.5 1 221.5 5 007.9 420.2 S 3.6

1994  58 481.2 54 445.1 4 036.0 879.5 2 905.9 223.2 S 4.2

1993  46 451.2 43 278.9 3 172.3 820.3 2 183.8 168.2 V 4.4

Pre1993 209 488.1  194 732.8 14 755.3 5 921.8 8 159.6 665.2 S 2.0

VEHICLE ACQUISITION

New 561 446.0  494 952.2 66 493.8 10 085.3 52 514.1 3 692.7 201.6 1.2

Used 473 940.8  439 211.5 34 729.3 9 781.8 23 678.6 1 245.9 S 1.3

Not reported 79 341.2  68 488.4 10 852.8 2 038.5 8 115.0 678.7 S 3.5

LEASE CHARACTERISTICS

Leased 100 995.2  72 310.2 28 684.9 973.6 26 533.0 1 091.9 S 3.0

Lessee 73 358.7  58 145.7 15 213.0 789.9 13 558.0 778.7 S 3.9

Vehicle only 16 667.3  3 802.5 12 864.8 246.6 11 764.6 771.2 S 2.7

Vehicle with driver 1 748.1  S 1 735.8 S 1 726.1 S S 6.8

Not reported 82.6  4.9 77.6 S 67.2 S V 27.1

Not applicable4  54 860.7 54 326.0 534.7 534.7 V V V 5.1

Lessor 22 281.4  9 397.4 12 884.0 156.6 12 452.6 274.8 V 4.3

Vehicle only 13 804.4  3 579.0 10 225.4 95.5 9 907.6 222.2 V 2.7

Vehicle with driver 2 657.2  110.6 2 546.6 59.7 2 434.3 52.6 V 6.9

Not reported 149.3  37.2 112.1 S 110.7 V V 29.8

Not applicable4  5 670.6 5 670.6 V V V VV 15.1

Not reported 5 355.0  4 767.1 588.0 27.1 522.4 S V 11.9

Not leased 591 796.8  535 249.7 56 547.1 11 982.1 41 126.6 3 321.9 116.6 1.1

Not reported 421 936.1  395 092.2 26 843.8 8 950.0 16 648.1 1 203.6 S 1.4

Length of leasing agreement:

Leased 100 995.2  72 310.2 28 684.9 973.6 26 533.0 1 091.9 S 3.0

1 to 11 months 2 179.1  316.7 1 862.4 9.4 1 836.8 16.2 V 5.9

12 months or more 33 027.8  7 206.7 25 821.1 395.9 24 302.5 1 036.4 S 1.8

Not reported 554.7  96.9 457.8 24.7 393.8 S V 12.4

Not applicable4  65 233.5 64 689.9 543.6 543.6 V V V 4.6

Provisions of lease5:

Financing only 20 602.6  4 913.9 15 688.7 268.0 14 613.6 760.3 S 2.4

Full maintenance 11 813.0  3 163.5 8 649.6 27.5 8 316.0 266.6 S 2.8

Payment of taxes 13 660.5  3 465.7 10 194.8 90.4 9 914.7 185.7 S 2.5

Obtaining licenses and permits 14 408.6  3 268.1 11 140.5 89.3 10 870.6 180.7 V 2.5

Recordkeeping 8 125.2  1 610.6 6 514.6 71.1 6 299.0 144.5 V 3.5

Fuel contract 4 143.2  774.9 3 368.3 S 3 333.4 9.1 S 5.2

PRIMARY OPERATOR CLASSIFICATION

Private 239 426.5  208 821.2 30 605.2 11 380.4 18 500.9 717.5 S 2.1

Motor carrier 62 059.9  12 265.1 49 794.8 365.1 45 034.7 4 156.3 238.7 2.0

Owner operator 24 402.0  7 655.8 16 746.1 872.0 15 140.2 734.0 V 5.5

Rental 20 434.0  14 764.4 5 669.6 31.5 5 628.7 S V 6.2

Personal transportation 766 644.3  757 384.2 9 260.1 9 256.8 3.3 V V .8

Not applicable2  1 761.4 1 761.4 V V V VV 13.8

Forhire characteristics:

Type of carrier:

Contract 41 703.7  4 666.3 37 037.4 316.2 34 908.9 1 768.2 S 1.8

Common 28 065.2  4 671.4 23 393.8 262.2 20 029.8 2 913.6 188.3 1.9

Not reported 7 445.6  1 877.0 5 568.6 117.7 5 236.1 208.5 S 3.8

Not applicable6  1 037 513.5 991 437.5 46 076.0 21 209.6 24 132.8 727.1 S .7

Type of service:

Truckload 55 846.8  4 652.7 51 194.2 482.4 49 473.9 1 228.3 S 1.2

Lessthan truckload 14 289.3  4 645.8 9 643.5 97.1 5 860.9 3 465.6 219.9 3.9

Not reported 7 078.0  1 916.1 5 161.9 116.6 4 839.7 196.4 S 3.9

Not applicable6  1 037 513.9 991 437.5 46 076.3 21 209.6 24 133.2 727.1 S .7

Source of hauls:

Shippers or receivers 57 610.6  6 698.8 50 911.9 383.2 45 951.0 4 348.2 229.5 1.4

Brokers 6 501.9  568.8 5 933.1 S 5 730.8 165.2 V 4.1

Centralized markets or exchanges 1 042.7  371.7 671.0 17.6 637.0 S V 10.9

Other  V V V V V VV N Not reported 12 059.2  3 575.3 8 483.9 258.2 7 856.0 360.4 S 2.9

Not applicable6  1 037 513.5 991 437.5 46 076.0 21 209.6 24 132.8 727.1 S .7

HAZARDOUS MATERIALS CARRIED7

Carrying hazardous materials 23 361.8  2 101.1 21 260.7 207.1 19 053.1 1 814.9 185.6 2.4

Not carrying hazardous materials 92 985.6  37 308.5 55 677.1 3 242.2 49 641.1 2 734.3 59.5 .9

Not reported 17 261.5  5 883.5 11 378.0 337.8 9 981.6 1 058.6 V 2.2

Not applicable8  981 119.1 957 359.0 23 760.1 18 118.6 5 631.9 S V .7

EQUIPMENT TYPE5 9

Aerial work platform/bucket 1 514.3  1 368.9 145.4 145.4 V V V 9.2

Air bag(s) (safety device only) 687 147.0  661 816.6 25 330.3 10 949.8 13 780.7 563.0 S 1.0

Air compressor (except air brakes) 15 299.2  2 945.1 12 354.1 270.1 11 468.5 615.5 V 2.4

Airconditioning 952 431.2  854 041.1 98 390.1 18 045.4 75 244.2 4 855.4 245.1 .7

Air springs 45 806.8  2 470.1 43 336.8 349.5 41 343.0 1 515.2 129.1 1.4

See footnotes at end of table.

54 United States Vehicle Inventory and Use Survey

U.S. Census Bureau, 2002 Economic Census
Table 7. Truck Miles by Truck Type: 2002Con.

[Millions. Estimates are based on data from the 2002 Vehicle Inventory and Use Survey. Because of rounding, estimates may not be additive]

Vehicular and operational characteristics

Truck type

Combination

Total

Singleunit

trucks and

trucktractors

without trailer Total

Singleunit

truck with

trailer

Trucktractor

with single

trailer

Trucktractor

with double

trailers

Trucktractor

with triple

trailers

Coefficient of

variation of

total

(percent)

EQUIPMENT TYPE5 9Con.

Antilock brake system 732 169.5  661 308.2 70 861.3 14 263.7 53 006.7 3 420.9 170.0 .9

Collision warning system 2 553.2  841.6 1 711.5 46.8 1 475.4 189.4 V 6.5

Computerized drive train control unit 151 461.7  141 577.0 9 884.7 2 390.8 7 068.0 413.7 12.2 2.8

Crane  1 522.8 1 300.0 222.8 105.1 104.3 S V 5.4

Electronic vehicle identification device 13 188.0  534.9 12 653.1 62.1 12 126.2 456.9 7.9 3.4

Engine retarder/brake 58 553.7  4 992.3 53 561.4 907.5 50 575.0 2 016.2 S 1.2

Frontwheel drive 405 069.9  396 513.5 8 556.4 8 556.4 V V V 1.4

Hoist  5 423.4 4 790.5 632.9 632.9 V V V 2.5

Idlereducing technology (portable auxiliary pack, electrification, etc.) 12 561.3  1 360.0 11 201.3 105.1 10 323.0 668.1 S 3.6

Internet access 1 262.8  68.4 1 194.4 S 1 132.4 S V 8.3

Lift gate 5 364.5  5 242.6 121.9 121.9 V V V 3.3

Mounting bar for snowplow 11 441.3  10 320.8 1 120.4 1 120.4 V V V 9.2

Navigational system 1 628.2  151.2 1 477.0 S 1 371.0 S S 8.4

Power takeoff 26 861.0  12 243.3 14 617.7 1 250.5 12 953.9 411.3 S 1.5

Radial tires 734 855.7  652 483.1 82 372.6 14 743.3 62 860.6 4 523.6 245.1 .9

Reflective material in addition to those required by law 24 333.9  7 729.7 16 604.2 723.5 15 250.9 629.8 V 2.1 Road speed governor 66 666.2  12 260.3 54 405.9 900.4 49 056.7 4 213.2 235.6 1.3 Toolbox 129 942.8  106 745.5 23 197.3 8 232.1 14 176.9 777.5 10.7 3.0 Trip recorder or onboard computer with communication capabilities 66 964.4  44 236.0 22 728.4 754.0 21 655.0 312.4 S 3.6

Trip recorder or onboard computer without communication

capabilities 188 654.5  176 827.1 11 827.5 3 412.4 6 812.9 1 545.5 56.7 2.3

Vehicle control aids for handicapped drivers 1 540.0  1 540.0 V V V VV 27.6

Wheelchair lift 1 984.6  1 981.4 S S V VV 21.7

Winch  9 266.1 8 006.3 1 259.8 S 625.6 102.4 V 8.6

Transmission type:

Automatic 800 969.4  784 362.0 16 607.3 13 389.7 3 211.4 S V .9

Manual 256 280.1  172 380.6 83 899.4 7 798.4 70 741.3 5 114.7 245.1 1.6

Semiautomated manual 2 353.0  1 164.7 1 188.2 7.9 1 157.6 S V 20.5 Automated manual 1 995.9  1 110.9 885.0 S 861.5 S V 15.6

Not reported 53 129.7  43 633.8 9 495.9 697.3 8 335.9 462.7 V 4.1

Braking system:

Hydraulic (standard) 18 808.6  16 562.1 2 246.6 1 025.8 1 149.2 S V 2.9

Hydraulic with power assist 14 808.3  13 428.7 1 379.7 871.2 508.0 S V 3.2

Air  96 707.6 15 108.5 81 599.1 1 685.5 74 586.4 5 082.0 245.1 .8

Other  V V V V V VV N

Not reported 14 847.9  6 059.3 8 788.5 261.1 8 064.1 463.3 V 2.5

Not applicable10 969 555.5 951 493.5 18 062.0 18 062.0 V V V .7

FUEL TYPE AND ENGINE SIZE

Fuel type:

Gasoline 936 146.5  921 856.3 14 290.3 14 192.7 97.1 S V .7

Diesel 167 407.2  69 676.5 97 730.6 7 681.3 84 187.3 5 616.9 245.1 1.5

Natural gas 979.0  972.5 S V S VV 24.9

Propane 575.9  572.9 3.0 S S V V 11.6

Alcohol fuels 1 560.2  1 532.9 S S S VV 14.1

Electricity  S S V V V VV S

Combination 5 080.3  5 069.8 S 2.1 S V V 13.5

Other  V V V V V VV N

Not reported 1 217.5  1 209.8 7.7 S 7.4 V V 30.7

Not applicable2  1 761.4 1 761.4 V V V VV 13.8

Cylinders11: 4 cylinders 127 973.3  126 545.7 S S 76.6 V V 2.9

6 cylinders 596 047.2  501 189.2 94 858.0 6 090.6 82 976.4 5 545.9 245.1 1.0 8 cylinders 379 361.3  365 491.4 13 869.9 13 634.0 228.6 7.3 V 1.6 Other 11 346.1  9 425.7 1 920.4 830.1 1 026.2 64.1 V 8.8

Cubic inch displacement11: Gasoline fuel 936 146.5  921 856.3 14 290.3 14 192.7 97.1 S V .7 Less than 200 233 334.4  231 957.6 S S V V V 2.1 200 to 299 388 620.3  385 366.0 3 254.2 3 254.2 V V V 1.5 300 to 349 149 604.2  147 297.1 2 307.1 2 307.0 S V V 2.7 350 to 399 133 757.0  129 419.0 4 338.0 4 331.0 S S V 2.9 400 or more 24 900.5  22 021.5 2 879.0 2 841.1 S V V 5.4 Not available 5 930.3  5 795.1 135.1 82.6 52.6 V V 14.3 Diesel fuel 167 407.2  69 676.5 97 730.6 7 681.3 84 187.3 5 616.9 245.1 1.5 Less than 400 21 974.7  19 738.7 2 236.0 2 082.0 150.1 S V 5.2 400 to 599 46 852.3  40 763.0 6 089.3 4 252.8 1 818.1 18.4 V 4.7

600 to 799 52 169.5  5 724.5 46 445.0 534.5 42 859.9 2 971.6 S 1.3

800 or more 32 836.0  2 098.6 30 737.4 579.9 28 561.9 1 540.1 S 1.7

Not available 13 574.6  1 351.7 12 222.9 232.1 10 797.4 1 082.8 S 2.7

Other fuel 8 195.4  8 148.2 S S 15.9 V V 9.3

Less than 400 7 586.4  7 560.5 S S S VV 10.0

400 or more 580.1  561.0 19.1 S 14.1 V V 15.5

Not available 28.9  26.6 S S S VV 26.3

Not reported 1 217.5  1 209.8 7.7 S 7.4 V V 30.7

Not applicable2  1 761.4 1 761.4 V V V VV 13.8

REFUELING LOCATION

Gas station 929 925.6  905 385.7 24 539.8 17 017.8 7 325.7 196.4 V .7

Truck stop 62 738.0  13 280.0 49 457.9 1 978.4 46 427.3 1 003.0 S 2.6

Own facility (including home, farm, ranch, onsite by mobile supplier,

etc.) 60 383.5  30 935.9 29 447.6 1 596.9 23 978.6 3 676.1 195.9 2.5

Other company’s/contractor’s facility not open to the public 8 667.2  5 854.5 2 812.8 137.8 2 279.7 395.3 V 9.6

Other  421.6 413.0 S S S VV 32.0

Not reported 50 830.8  45 021.6 5 809.3 1 171.4 4 291.2 346.6 V 4.0

Not applicable2  1 761.4 1 761.4 V V V VV 13.8

See footnotes at end of table.

Vehicle Inventory and Use Survey United States 55

U.S. Census Bureau, 2002 Economic Census
Table 7. Truck Miles by Truck Type: 2002Con.

[Millions. Estimates are based on data from the 2002 Vehicle Inventory and Use Survey. Because of rounding, estimates may not be additive]

Vehicular and operational characteristics

Truck type

Combination

Total

Singleunit

trucks and

trucktractors

without trailer Total

Singleunit

truck with

trailer

Trucktractor

with single

trailer

Trucktractor

with double

trailers

Trucktractor

with triple

trailers

Coefficient of

variation of

total

(percent)

MAINTENANCE5

General maintenance performed by:

None performed 15 079.6  14 785.0 294.6 S 212.7 S V 9.7

Companyowned maintenance facility 154 498.0  90 691.2 63 806.7 4 021.7 55 369.2 4 210.6 205.2 2.1 General repair business or private mechanic 496 550.5  458 729.4 37 821.1 9 751.0 26 637.4 1 426.3 6.3 1.3 Dealership service department 298 912.2  278 375.8 20 536.4 4 366.1 15 624.7 539.5 6.2 1.8 Leasing company 4 464.6  1 938.8 2 525.8 S 2 291.3 143.3 S 7.7

Individual not employed/paid by any maintenance type facility 346 395.8  329 966.9 16 428.9 7 539.2 8 457.3 432.4 V 1.6 Other  V V V V V VV N Not reported 54 245.1  47 903.4 6 341.7 1 142.4 4 920.1 279.1 V 4.0 Not applicable2  1 761.4 1 761.4 V V V VV 13.8

Extensive repairs performed by:

None performed 858 631.1  781 496.1 77 135.0 14 651.6 58 487.2 3 799.2 197.0 .8

Companyowned maintenance facility 22 141.2  14 010.6 8 130.6 739.7 6 549.6 829.2 12.1 6.2

General repair business or private mechanic 86 267.8  75 644.1 10 623.6 2 931.5 7 194.9 493.1 S 3.9

Dealership service department 61 277.4  51 771.9 9 505.5 1 870.8 7 136.9 455.3 S 4.2

Leasing company 987.0  S 272.4 S 261.1 S V 40.1

Component distributorship (engine, transmission, body, etc.) 6 180.9  4 397.0 1 783.8 S 1 269.7 74.2 S 17.3

Individual not employed/paid by any repair type facility 38 970.3  36 143.3 2 827.0 1 292.2 1 491.3 42.9 S 5.3

Other  V V V V V VV N

Not reported 2 679.6  2 638.0 41.6 S 34.0 V V 26.3

Not applicable2  1 761.4 1 761.4 V V V VV 13.8

AXLE ARRANGEMENT

Driving axles:

1 617 333.0 594 723.6 22 609.4 11 716.1 6 918.6 3 751.1 223.7 1.1

2 496 730.2 407 439.3 89 290.9 10 175.6 77 239.7 1 854.1 21.5 1.1

3 or more 376.0  331.1 44.8 S 30.0 S V 7.5

Not reported 288.8  158.0 130.8 2.3 119.4 S V 14.1

Total liftable axles and locations12:

None 139 553.4  47 190.1 92 363.3 3 461.2 83 130.5 5 527.0 244.7 .7

1 4 451.5 3 058.1 1 393.3 267.8 1 043.7 81.4 S 2.9

Forward of the drive axle 2 976.9  1 950.9 1 026.0 191.2 758.6 75.7 S 3.6

Below the chassis 588.4  453.4 135.0 23.6 108.2 S V 8.3

Beyond the chassis 234.1  209.3 24.8 9.4 S V V 11.0

Not reported 652.2  444.6 207.6 43.6 161.5 S V 7.7

2 or more 651.5  583.7 67.8 67.8 V V V 6.0

Forward of the drive axle 527.8  467.5 60.3 60.3 V V V 6.2

Below the chassis 235.6  189.5 46.1 46.1 V V V 10.4

Beyond the chassis 129.6  127.5 S S V V V 9.9

Not reported 32.7  28.3 S S V VV 27.8

Not reported 516.2  326.7 189.5 46.9 133.5 S V 9.3

Not applicable10 969 555.5 951 493.5 18 062.0 18 062.0 V V V .7

Total liftable axles and number of braking axles:

None 139 553.4  47 190.1 92 363.3 3 461.2 83 130.5 5 527.0 244.7 .7 1 4 451.5 3 058.1 1 393.3 267.8 1 043.7 81.4 S 2.9

0 braking 576.7  326.9 249.8 25.1 217.1 S V 8.0

1 braking 3 687.4  2 586.9 1 100.5 232.4 793.9 S S 3.2

Not reported 187.4  144.3 43.0 S 32.7 V V 15.3 2 or more 651.5  583.7 67.8 67.8 V V V 6.0 0 braking 18.9  16.6 S S V VV 28.2

1 braking 26.0  22.9 S S V VV 30.4

2 or more braking 583.4  524.7 58.7 58.7 V V V 6.5

Not reported 23.1  19.5 S S V VV 30.7

Not reported 516.2  326.7 189.5 46.9 133.5 S V 9.3

Not applicable10 969 555.5 951 493.5 18 062.0 18 062.0 V V V .7

CAB TYPE

Conventional cab 127 623.2  43 394.0 84 229.3 3 648.2 75 262.6 5 108.8 209.7 .8

With sleeper 49 177.6  V 49 177.6 V 48 067.8 1 022.3 S 1.4

Without sleeper 72 741.0  43 394.0 29 347.0 3 648.2 21 882.3 3 694.3 122.2 1.2

Not reported 5 704.7  V 5 704.7 V 5 312.5 392.2 V 4.4

Cab over engine 17 088.5  7 340.9 9 747.6 192.6 9 011.0 508.6 S 2.3

With sleeper 7 042.5  V 7 042.5 V 6 675.4 331.7 S 4.7

Without sleeper 8 994.1  7 340.9 1 653.2 192.6 1 310.8 149.8 V 2.1

Not reported 1 051.9  V 1 051.9 V 1 024.8 S V 12.4

Cab forward of engine 284.3  282.5 S S V VV 13.8

Cab beside engine 101.0  99.3 S S S VV 17.0

Not reported 75.4  41.9 33.5 S 32.6 V V 25.9

Not applicable10 969 555.5 951 493.5 18 062.0 18 062.0 V V V .7

N Not available. S Estimate does not meet publication standards because of high sampling variability or poor response quality. V Represents an estimate of less than 50 vehicles, 50,000

miles, or 0.05 percent.

1Comparability of estimates may vary across survey years due to changes in category definitions.

2Vehicles not in use. When the respondent had partialyear ownership of the vehicle, annual miles were adjusted to reflect miles traveled when not owned by the respondent. 3Trucktractors not in use. 4Lessees or lessors of pickups, minivans, other light vans, and sport utilities.

5Detail lines do not add to total trucks because items were not applicable or multiple responses were possible.

6Includes pickups, minivans, other light vans, and sport utilities; all other vehicles that are private, rental, or used for personal transportation; and vehicles not in use. 7Distributed miles data are available in Table 8.

8Includes pickups, minivans, other light vans, and sport utilities; all other vehicles that are rental or used for personal transportation; and vehicles not in use. 9Pickups, minivans, other light vans, and sport utilites, in the Equipment Type section, were only required to report for aerial work platform/bucket, air bag(s), airconditioning, antilock brake

system, computerized drive train control unit, frontwheel drive, mounting bar for snowplow, radial tires, toolbox, trip recorder, vehicle control aids for handicapped drivers, wheelchair lift, and winch. 10Pickups, minivans, other light vans, and sport utilities. 11Data were derived from administrative records. 12Detail lines do not add to the subtotal line because items were not applicable or multiple responses were possible. When 2 or 3 liftable axles were indicated, respondents properly reported

multiple responses, therefore detail lines will be significantly greater than the corresponding subtotal line.

Note: Use caution when assessing the true increase or decrease in any particular data line. Large changes in the "not reported" or "not applicable" estimates should be taken into account.

Note: The Appendix provides instructions for approximating unpublished coefficients of variation (CVs). CVs estimated from sample data are available on request. The Introduction

gives information on confidentiality protection, sampling error, nonsampling error, sample design, and definitions. Links to this information on the Internet may be found

at www.census.gov/svsd/www/02vehinv.html.

56 United States Vehicle Inventory and Use Survey

U.S. Census Bureau, 2002 Economic Census
Table 8. Truck Miles Distribution by Operational Characteristics: 2002

[Millions. Estimates are based on data from the 2002 Vehicle Inventory and Use Survey. Because of rounding, estimates may not be additive]

Vehicular and operational characteristics

Coefficient of variation (percent) Truck miles distribution for all trucks

Truck miles distribution excluding pickups,

minivans, other light vans,

and sport utilities

ABA B

Total  1 114 728.0 145 172.5 .6 .7

TRAILER CONFIGURATION

No trailer pulled  988 184.3 52 338.2 .7 1.4

Single trailer pulled  119 135.2 87 037.3 1.5 .8

Double trailers pulled  5 413.9 5 413.9 4.8 4.8

Triple trailers pulled  233.2 233.2 30.6 30.6

Not applicable1  1 761.4 149.9 13.8 10.9

RANGE OF OPERATION

Offtheroad  15 051.8 2 650.4 5.2 5.1

50 miles or less  616 029.4 38 231.2 .9 1.3

51 to 100 miles  158 033.8 22 238.1 2.1 1.5

101 to 200 miles  65 965.1 14 286.3 3.0 1.9

201 to 500 miles  49 306.0 17 539.3 2.8 2.0

501 miles or more  49 616.5 25 016.1 2.6 2.1 Not reported 158 963.9 25 061.1 2.4 2.0 Not applicable1  1 761.4 149.9 13.8 10.9

JURISDICTION

Operated in Canada  1 088.9 218.9 10.2 9.9 Operated in Mexico  1 350.8 48.0 37.9 27.7 Operated within the home base state 899 127.5  85 389.9 .8 1.0 Operated in states other than the home base state 91 585.8  40 321.5 1.7 1.4 Not reported 119 813.7 19 044.3 2.7 2.2 Not applicable1  1 761.4 149.9 13.8 10.9

OPERATOR CLASSIFICATION

Private 239 023.2 56 135.0 2.0 .9 Motor carrier  61 961.1 58 177.9 2.0 1.4 Owner operator  24 266.8 19 066.5 5.1 2.1 Rental  20 622.5 11 131.9 6.1 4.7 Personal transportation  767 093.1 511.3 .8 6.7 Not applicable1  1 761.4 149.9 13.8 10.9

Forhire characteristics:

Type of carrier:

Contract  39 614.0 39 614.0 1.6 1.6 Common 30 155.9 30 155.9 1.8 1.8 Not reported 7 444.6 7 444.6 3.8 3.8 Not applicable2 3  1 037 513.5 67 957.9 .7 1.1

Type of service:

Truckload  15 274.2 15 274.2 3.5 3.5 Lessthan truckload  54 885.0 54 885.0 1.2 1.2 Not reported 7 055.3 7 055.3 3.9 3.9 Not applicable2 3  1 037 513.5 67 957.9 .7 1.1

PRODUCTS CARRIED4

Animals and fish, live  2 446.1 734.7 13.1 7.1 Animal feed and products of animal origin 3 257.0  2 088.0 6.6 5.9 Grains, cereal  1 789.5 1 368.0 7.2 5.3 All other agricultural products  4 094.5 2 661.1 6.5 4.8 Basic chemicals 1 435.1 876.1 11.6 7.5

Fertilizers and fertilizer materials 2 824.1  1 666.2 18.6 6.8

Pharmaceutical products  1 103.2 305.1 22.5 14.3

All other chemical products and preparations 5 615.5  1 350.8 18.3 6.9 Alcoholic beverages  1 378.5 1 123.6 13.7 5.3 Bakery and milled grain products 4 459.8  3 552.6 9.5 4.1

Meat, seafood, and their preparations 3 815.6  3 056.2 6.5 4.4

Tobacco products  667.1 445.3 18.4 11.8

All other prepared foodstuffs 8 820.2 7 427.9 4.4 2.8

Logs and other wood in the rough 1 649.2  1 149.2 9.9 4.9

Paper or paperboard articles  3 907.8 3 139.6 6.6 4.6

Printed products  3 680.6 765.0 15.6 8.5

Pulp, newsprint, paper, and paperboard 2 063.2  1 935.8 6.6 6.2

Wood products  8 267.4 3 560.9 8.5 3.2

Articles of base metal 15 714.5 3 293.9 8.4 3.7

Base metal in primary or semifinished forms 6 383.4  2 881.4 10.0 4.6

Nonmetallic mineral products  6 011.4 3 048.5 9.9 3.5

Tools, nonpowered  55 813.4 7 759.2 4.4 2.4

Tools, powered  41 524.0 6 477.5 5.0 2.7

Electronic and other electrical equipment 12 392.0  3 023.5 8.9 4.8

Furniture, mattresses, lamps, etc. 3 216.7  2 043.1 9.2 5.0

Machinery 8 084.8 3 225.1 9.2 4.5 Miscellaneous manufactured products 9 261.8  4 007.5 11.1 4.6 Precision instruments and apparatus 7 293.5  733.9 13.2 9.3 Textile, leather, and related articles 2 849.7  1 538.2 15.6 6.1 Vehicles, including parts  7 020.1 3 843.8 8.9 4.3

All other transportation equipment 986.3  636.3 13.9 12.6

Coal 301.5 300.8 11.5 11.5

Crude petroleum  131.5 131.5 20.5 20.5

Gravel or rushed stone  3 300.1 2 790.0 7.1 3.0

Metallic ores and concentrates 45.4 45.4 20.6 20.6

Monumental or building stone 702.0 462.2 14.3 8.5 Natural sands 1 158.2 1 089.1 5.2 5.0 All other nonmetallic minerals 537.9 498.6 9.0 7.0 Fuel oils  3 480.6 1 232.0 20.1 5.5 Gasoline and aviation turbine fuel 1 466.2  848.5 16.5 6.9

See footnotes at end of table.

Vehicle Inventory and Use Survey United States 57

U.S. Census Bureau, 2002 Economic Census
Table 8. Truck Miles Distribution by Operational Characteristics: 2002Con.

[Millions. Estimates are based on data from the 2002 Vehicle Inventory and Use Survey. Because of rounding, estimates may not be additive]

Vehicular and operational characteristics

Coefficient of variation (percent) Truck miles distribution for all trucks

Truck miles distribution excluding pickups,

minivans, other light vans,

and sport utilities

ABA B

PRODUCTS CARRIED4Con.

Plastics and rubber 3 919.9 2 392.7 10.2 5.4

All other coal and refined petroleum products 1 702.2  1 172.2 12.5 6.5

Hazardous waste (EPA manifest)  190.3 190.0 18.4 18.4

All other waste and scrap (nonEPA manifest) 3 766.7  2 647.4 6.2 3.3

Recyclable products  1 221.5 922.0 9.0 6.5

Mail and courier parcels 8 732.0 4 759.9 11.7 9.3

Empty shipping containers  1 001.1 794.0 9.0 7.3

Passengers  5 532.9 273.5 12.7 13.3

Mixed freight  14 658.8 14 658.8 3.0 3.0

Products, equipment, or materials not elsewhere classified 264.9  264.6 12.7 12.7

Products not specified  17 732.4 6 358.1 7.0 3.2

Not applicable1  1 761.4 149.9 13.8 10.9

HAZARDOUS MATERIALS CARRIED4

Division 1.1, Explosives  59.4 59.4 46.5 46.5 Division 1.2, Explosives  S SS S

Division 1.3, Explosives  23.9 23.9 33.4 33.4 Division 1.4, Explosives  95.1 95.1 12.5 12.5 Division 1.5, Explosives  56.2 56.2 15.1 15.1

Division 1.6, Explosives  40.6 40.6 8.3 8.3 Division 2.1, Flammable gas 1 089.6 1 089.6 6.0 6.0 Division 2.2, Nonflammable gas 485.9 485.9 8.7 8.7 Division 2.3, Poison gas 50.2 50.2 25.6 25.6 Class 3, Flammable  1 681.9 1 681.9 4.6 4.6

Combustible liquid 813.1 813.1 7.2 7.2 Oxygen 2, Oxygen  205.2 205.2 12.1 12.1 Division 4.1, Flammable solid  218.0 218.0 7.6 7.6 Division 4.2, Spontaneously combustible 43.9  43.9 24.8 24.8 Division 4.3, Dangerous when wet 46.9 46.9 11.4 11.4

Division 5.1, Oxidizer  325.6 325.6 6.9 6.9 Division 5.2, Organic peroxide  95.9 95.9 6.1 6.1 Division 6.1, Poison inhalation hazard 67.4  67.4 14.0 14.0 Division 6.1, Poison  151.9 151.9 10.4 10.4 Class 7, Radioactive 28.1 28.1 21.6 21.6

Class 8, Corrosive 1 051.6 1 051.6 5.0 5.0 Class 9  313.1 313.1 10.0 10.0 Hazardous materials not specified 305.4  305.4 9.7 9.7

Not applicable1  1 761.4 149.9 13.8 10.9

N Not available. S Estimate does not meet publication standards because of high sampling variability or poor response quality. V Represents an estimate of less than 50 vehicles, 50,000

miles, or 0.05 percent.

1Vehicles not in use. When the respondent had partialyear ownership of the vehicle, annual miles were adjusted to reflect miles traveled when not owned by the respondent. 2Column A includes: pickups, minivans, other light vans, and sport utilities; all other vehicles that are private, rental, or used for personal transportation; and vehicles not in use. 3Column B includes: all other vehicles that are private, rental, used for personal transportation, or not in use.

4Detail lines may not add to total because multiple products/hazardous materials may be carried at the same time.

Note: The Appendix provides instructions for approximating unpublished coefficients of variation (CVs). CVs estimated from sample data are available on request. The Introduction

gives information on confidentiality protection, sampling error, nonsampling error, sample design, and definitions. Links to this information on the Internet may be found at www.census.gov/svsd/www/02vehinv.html.

58 United States Vehicle Inventory and Use Survey

U.S. Census Bureau, 2002 Economic Census
Appendix.

Approximating Unpublished Coefficients of

Variation

Estimated coefficients of variation (CVs) are presented for only the row and column totals for

Tables 4 through 7.

The coefficient of variation for an individual cell in a particular table can be approximated by

using the procedure below. CVs for each cell, estimated from the sample data, are available on

request.

Tables 4 and 5

The CV (expressed as a percentage) for a cell in a particular table can be calculated as follows:

CVC CVS* S STATE  C

C STATE  S

where:

S = the smaller number between the row and column truck totals for the row and column

containing the cell

C = the number of trucks in the cell

STATE = the number of trucks in the state

CV(S) = the coefficient of variation corresponding to S

Tables 6 and 7

For Tables 6 and 7, follow the above procedure but replace ‘‘trucks’’ with ‘‘truck miles.’’

Example

Suppose, in Table 4, there are an estimated 40.0 thousand trucks in the cell for retail light-sized

trucks, for which an approximation of the CV is needed. The following information must be

extracted from the table: (1) 2222.2 thousand trucks in the state, (2) 46.0 thousand trucks and an

estimated CV of 27.6 percent for the ‘‘Retail Trade’’ row, and (3) 2034.0 thousand trucks and an

estimated CV of 1.1 percent for the ‘‘Light-sized trucks’’ column. Since the row total of 46.0 thousand is less than the column total of 2034.0 thousand, use the row figure to approximate the CV:

CV (retail light-sized trucks)=

 27.6 * 46.0 * 2222.2  40.0

40.0 * 2222.2  46.0

 29.6%

Some exceptions from this procedure will yield better approximations of the coefficients of variation in particular cells. Certain rows and columns in the tables are composed predominantly of

‘‘large trucks’’ (trucks excluding pickups, minivans, other light vans, and sport utilities). Because

of the sample design, one obtains a better approximation of the coefficient of variation for a cell

when the value of S is equal to the truck total associated with the ‘‘large trucks’’ even though this

truck (row or column) total may not be the smaller of the two truck totals. For example, if the column containing the cell is composed of ‘‘large trucks,’’ then S is equal to the column total. When

both totals consist of ‘‘large trucks,’’ use the smaller of the row and column totals.

Columns of predominately ‘‘large trucks:’’

Tables 4 and 6—Light-heavy and Heavy-heavy

Vehicle Inventory and Use Survey Appendix A–1

U.S. Census Bureau, 2002 Economic Census
Tables 5 and 7—Single-unit truck with trailer and all Truck-tractor trailer columns

Rows of predominately ‘‘large-trucks:’’

Body Type—All except pickup, minivan, other light vans, and sport utility

Annual Miles—75,000 miles or more

Vehicle Size—Light-heavy and Heavy-heavy

Average Weight—19,501 pounds or more

Total Length—50.0 or more

Miles per Gallon—Less than 5 and 5 to 6.9

Primary Operator Classification— Motor carrier, Owner operator

Primary Operator Classification, For-hire characteristics—Type of carrier, Type of service

Hazardous Materials Carried—Carrying hazardous materials

Equipment Type—Electronic vehicle identification device, Engine retarder/brake, Navigational

system, and Reflective material in addition to those required by law

Equipment Type, Braking system—All rows except Not applicable

Fuel Type and Engine Size, Cubic inch displacement, Diesel fuel—600 or more and Not

available

Truck Type and Axle Arrangement, Single-unit trucks and truck-tractors without trailer—3

axles or more

Truck Type and Axle Arrangement, Combinations—All Truck-tractor rows

Cab Type—All rows except Not applicable

A–2 Appendix Vehicle Inventory and Use Survey

U.S. Census Bureau, 2002 Economic Census
EC02TV-US 2002 United States: 2002 2002 Economic Census Vehicle Inventory and Use Survey Geographic Area Series USCENSUSBUREAU