# 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. Trucks

Comparative Summary: 2002 and Earlier Years 12  1b. Trucks

Comparative 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 Utilities

Measures 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.



## Introduction 1 Vehicle Inventory and Use Survey 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.

Introduction 3 Vehicle Inventory and Use Survey 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. Productscarried, 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 onNAICS 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.

Introduction 5 Vehicle Inventory and Use Survey 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 aparticular 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 COLLECTIONA 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 subjectedto 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 conductedunder 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 beenobtained 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 thisreport 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 percentageof 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: Introduction 7 Vehicle Inventory and Use Survey 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 asobtained 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 asobtained 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 thenumber 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 samplesof 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 ErrorNonsampling 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 beenobtained, 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 toobtain 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 dividedinto 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 responsesreceived 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 theextent 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 milesand 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-ROMcontaining 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 fiveyears 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. Introduction 9 Vehicle Inventory and Use Survey U.S. Census Bureau, 2002 Economic CensusOK 1 , 1 90.0 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 2,579.8SC 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 1 0.8 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 1 39.1

IN 187.5

TN 1 05.8

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 157.5NY 180.9 ME 24.1 VT 16.9

NH 23.5 MA 82.6 RI 1 1.8 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

1 0 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

TIPS PS [APS_PSB,SMITH038] 12/ 1/04 08:18:46 EPBA51 TLP:VIUSAA.TLP;13 12/ 1/04 08:18:39 DATA:NONE PSC:TIPS_08184401.PS PAGE: 1 TSF:TIPS92 08121351.DAT;2 12/ 1/04 08:18:44 UTF:TIPS93 08121351.DAT;2 12/ 1/04 08:18:44 META:TIPS96 08121351.DAT;2 12/ 1/04 08:18:45 

# 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) Ranking Trucks (thousands) Ranking **United States 85 174.8** **X 72 800.3 X** Alabama 1 720.7*18 1 538.6 *16 Alaska 274.247 248.4 47 Arizona 1 500.1*22 1 390.0 *22 Arkansas 996,931 899,2 31 California 9 245.61 8 818.8 1 Colorado 1 677.4*20 1 422.0 *20 Connecticut 797.232 751.5 33 Delaware 248.648 206.3 48 District of Columbia 42.651 33.0 51 Florida 4 329.33 3 460.2 3 Georgia 2 733.29 2 258.4 9 Hawaii 351.444 294.2 *45 Idaho 666.4*37 550.6 *37 Illinois 3 277.27 2 674.6 7 Indiana 2 222.211 1 852.5 13 Iowa 1 165.6*29 979.3 30 Kansas 1 079.130 1 082.6 29 Kentucky 1 355.427 1 348.0 24 Louisiana 1 441.325 1 210.1 *26 Maine 390.042 377.6 42 Maryland 1 375.726 1 192.0 *27 Massachusetts 1 530.721 1 240.8 25 Michigan 3 581.3*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 Montana 473.540 417.2 *40 Nebraska 717.0*36 639.7 35 Nevada 646.539 539.7 38 New Hampshire 403.241 416.6 *41 New Jersey 2 122.312 1 514.3 *17 New Mexico 741.9*33 715.9 34 New York 3 527.6*5 2 863.9 5 North Carolina 2 528.310 1 996.1 10 North Dakota 377.043 340.9 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 Pennsylvania 3 088.78 2 605.9 8 Rhode Island 216.750 190.7 *50 South Carolina 1 173.3*28 1 140.7 28 South Dakota 346.645 361.5 43 Tennessee 2 030.513 1 502.4 *18 Texas 6 412.02 4 410.6 2 Utah 723.0*35 563.7 36 Vermont 244.149 194.5 *49 Virginia 1 983.914 1 891.6 *12 Washington 1 923.1*15 1 903.5 *11 West Virginia 665.3*38 446.0 39 Wisconsin 1 907.6*16 1 618.5 *15 Wyoming 281.246 291.3 *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. 

# Trucks **Comparative 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** 

### BUSINESS **1** 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 Van 2 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 5,000 3 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 reported 4 6.8  6.7 3.1 2.6 

### TRUCK TYPE Singleunit trucks 5 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. 1 Comparability of estimates may vary across survey years due to changes in category definitions. 2 Includes open top trailers and all van except step, walkin, or multistop. 3 Includes vehicles not in use. 4 For survey years prior to 2002, this includes vehicles leased from someone else. 5 Excludes 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. 

# Trucks **Comparative 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 ro unding, estimates may not be additive] Vehicular and operational characteristics 2002 1997 **Total 100.0**  **100.0** 

### BUSINESS **1** 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 Van 2 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 5,000 3 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 reported 4 7.2  10.2 

### TRUCK TYPE Singleunit trucks 5 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. 1 Comparability of estimates may vary across survey years due to changes in category definitions. 2 Includes open top trailers and all van except step, walkin, or multistop. 3 Includes vehicles not in use. 4 For survey years prior to 2002, this includes vehicles leased from someone else. 5 Excludes 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** 

### BUSINESS **1** 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 applicable 2 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 applicable 3 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 applicable 2 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 1997 Con. [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 applicable 2 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 applicable 2 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 applicable 2 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 1997 Con. [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 lease 5 :

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 applicable 2 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 applicable 6 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 applicable 6 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 applicable 6 83 842.7  N N 1 037 513.5 N N 12.4 N N 

### HAZARDOUS MATERIALS CARRIED**7** 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 applicable 8 80 254.0  N N 981 119.1 N N 12.2 N N 

### EQUIPMENT TYPE **5 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 1997 Con. [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 TYPE **5 9**  

### Con. 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 on board computer with communication capabilities 3 305.5  N N 66 964.4 N N 20.3 N N Trip recorder or on board 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 applicable 10 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 applicable 2 1 978.0  N N 1 761.4 N N .9 N N Cylinders 11 :

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 displacement 11 :

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 applicable 2 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 applicable 2 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 1997 Con. [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 

### MAINTENANCE **5** 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 applicable 2 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 applicable 2 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 locations 12 :

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 applicable 10 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 applicable 10 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 1997 Con. [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 applicable 10 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. 1 Comparability of estimates may vary across survey years due to changes in category definitions. 2Vehicles not in use. When the respondent had partial year ownership of the vehicle, annual miles were adjusted to reflect miles traveled when not owned by the respondent. 3Trucktractors not in use. 4 Lessees or lessors of pickups, minivans, other light vans, and sport utilities. 5 Detail lines do not add to total because items were not applicable or multiple responses were possible. 6 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. 7 Distributed miles data are available in Table 8. 8 Includes pickups, minivans, other light vans, and sport utilities; all other vehicles that are rental or used for personal tran sportation; and vehicles not in use. 9 Pickups, 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, whe elchair lift, and winch. 10 Pickups, minivans, other light vans, and sport utilities. 11 Data were derived from administrative records. 12 Detail 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 e rror, nonsampling error, sample design, and definitions. Links to this information on the Internet may be found atwww.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 Trucks **Measures 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 applicable 1 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 applicable 2 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 applicable 1 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 Trucks **Measures of Sampling Variability: 2002 and 1997**  Con. [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 applicable 1 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 applicable 1 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 applicable 1 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 Trucks **Measures of Sampling Variability: 2002 and 1997**  Con. [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 applicable 3 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 applicable 3 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 applicable 3 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 applicable 1 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 applicable 4 .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 applicable 4 .2  N N .7 N N .6 N N 

### HAZARDOUS MATERIALS CARRIED**5** 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 applicable 6 .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 Trucks **Measures of Sampling Variability: 2002 and 1997**  Con. [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 on board computer with communication capabilities 4.2  N N 3.6 N N 2.3 N N Trip recorder or on board 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 applicable 8 .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 applicable 1 5.7  N N 13.8 N N 13.3 N N Cylinders 9 :

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 applicable 1 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 Trucks **Measures of Sampling Variability: 2002 and 1997**  Con. [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 applicable 1 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 applicable 1 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 applicable 1 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 applicable 8 .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 Trucks **Measures of Sampling Variability: 2002 and 1997**  Con. [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

**ARRANGEMENT** Con. 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 applicable 8 .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 applicable 8 .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. 1 Vehicles not in use. When the respondent had partial year ownership of the vehicle, annual miles were adjusted to reflect miles traveled when not owned by the respondent. 2Trucktractors not in use. 3 Lessees or lessors of pickups, minivans, other light vans, and sport utilities. 4 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. 5 Distributed miles data are available in Table 8. 6 Includes pickups, minivans, other light vans, and sport utilities; all other vehicles that are rental or used for personal tran sportation; and vehicles not in use. 7 Pickups, 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, whe elchair lift, and winch. 8 Pickups, minivans, other light vans, and sport utilities. 9 Data 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** 

### BUSINESS **1** 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 applicable 2 226.1  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 applicable 3 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 applicable 2 226.1  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 1997** Con. [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 applicable 2 226.1  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 applicable 2 226.1  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 applicable 2 226.1  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 1997** Con. [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 lease 4 :

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 applicable 2 226.1  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 applicable 5 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 applicable 5 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 applicable 5 4 188.4  N N 67 957.9 N N 16.2 N N 

### HAZARDOUS MATERIALS CARRIED **6** 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 applicable 7 599.7  N N 11 563.5 N N 19.3 N N 

### EQUIPMENT TYPE **4** 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 1997** Con. [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 TYPE **4** 

### Con. 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 on board computer with communication capabilities 328.8  N N 24 542.9 N N 74.6 N N Trip recorder or on board 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 applicable 2 226.1  N N 149.9 N N .7 N N Cylinders 8 :

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 applicable 2 226.1  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 applicable 2 226.1  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 1997** Con. [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 

### MAINTENANCE **4** 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 applicable 2 226.1  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 applicable 2 226.1  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 locations 9 :

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 1997** Con. [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. 1 Comparability of estimates may vary across survey years due to changes in category definitions. 2Vehicles not in use. When the respondent had partial year ownership of the vehicle, annual miles were adjusted to reflect miles traveled when not owned by the respondent. 3Trucktractors not in use. 4 Detail 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. 6 Distributed miles data are available in Table 8. 7Vehicles that are rental or used for personal tranportation; and vehicles not in use. 8 Data were derived from administrative records. 9 Detail 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 e rror, nonsampling error, sample design, and definitions. Links to this information on the Internet may be found atwww.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 Utilities Measures 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 applicable 1 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 applicable 2 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 applicable 1 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 Utilities Measures of Sampling Variability:**  **2002 and 1997** Con. [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 applicable 1 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 applicable 1 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 Utilities Measures of Sampling Variability:**  **2002 and 1997** Con. [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 applicable 1 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 applicable 3 .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 applicable 3 .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 applicable 3 .4  N N 1.1 N N .9 N N 

### HAZARDOUS MATERIALS CARRIED**4** 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 applicable 5 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 Utilities Measures of Sampling Variability:**  **2002 and 1997** Con. [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 on board computer with communication capabilities 5.0  N N 2.8 N N 3.4 N N Trip recorder or on board 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 applicable 1 2.8  N N 10.9 N N 10.4 N N Cylinders 6 :

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 applicable 1 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 Utilities Measures of Sampling Variability:**  **2002 and 1997** Con. [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 applicable 1 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 applicable 1 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 applicable 1 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 Utilities Measures of Sampling Variability:**  **2002 and 1997** Con. [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

**ARRANGEMENT** Con. 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. 1 Vehicles not in use. When the respondent had partial year 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. 4 Distributed miles data are available in Table 8. 5Vehicles that are rental or used for personal tranportation; and vehicles not in use. 6 Data 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 notbe 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 

### BUSINESS **1** 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 applicable 2 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 applicable 3 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 applicable 2 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 applicable 2 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: 2002 Con. [Thousands. Estimates are based on data from the 2002 Vehicle Inventory and Use Survey. Because of rounding, estimates may notbe 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 applicable 2 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 applicable 2 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: 2002 Con. [Thousands. Estimates are based on data from the 2002 Vehicle Inventory and Use Survey. Because of rounding, estimates may notbe additive] Vehicular and operational characteristics Vehicle size Total Light Medium Lightheavy Heavyheavy Coefficient of variation of total (percent) 

### LEASE CHARACTERISTICS Con. 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 lease 5 :

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 applicable 2 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 applicable 6 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 applicable 6 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 applicable 6 83 842.7  79 700.9 1 733.6 793.2 1 614.9 .2 

### HAZARDOUS MATERIALS CARRIED**7** 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 applicable 8 80 254.0  79 045.7 844.0 160.4 204.0 .2 

### EQUIPMENT TYPE **5 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 on board computer with communication capabilities 3 305.5  2 954.0 93.9 31.9 225.7 4.2 Trip recorder or on board 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 applicable 10 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: 2002 Con. [Thousands. Estimates are based on data from the 2002 Vehicle Inventory and Use Survey. Because of rounding, estimates may notbe 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 applicable 2 1 978.0  1 794.1 54.3 60.8 68.8 5.7 Cylinders 11 :

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 displacement 11 :

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 applicable 2 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 applicable 2 1 978.0  1 794.1 54.3 60.8 68.8 5.7 

### MAINTENANCE **5** 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 applicable 2 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 applicable 2 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: 2002 Con. [Thousands. Estimates are based on data from the 2002 Vehicle Inventory and Use Survey. Because of rounding, estimates may notbe additive] Vehicular and operational characteristics Vehicle size Total Light Medium Lightheavy Heavyheavy Coefficient of variation of total (percent) 

### TRUCK TYPE AND AXLE ARRANGEMENT Con. 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 locations 12 :

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 applicable 10 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 applicable 10 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 applicable 10 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. 1 Comparability of estimates may vary across survey years due to changes in category definitions. 2Vehicles not in use. 3Trucktractors not in use. 4 Lessees or lessors of pickups, minivans, other light vans, and sport utilities. 5 Detail lines do not add to total trucks because items were not applicable or multiple responses were possible. 6 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. 7 Distributed miles data are available in Table 8. 8 Includes pickups, minivans, other light vans, and sport utilities; all other vehicles that are rental or used for personal tran sportation; and vehicles not in use. 9 Pickups, 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, whe elchair lift, and winch. 10 Pickups, minivans, other light vans, and sport utilities. 11 Data were derived from administrative records. 12 Detail 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 availa ble 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 atwww.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 notbe 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 

### BUSINESS **1** 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 applicable 3 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 applicable 2 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: 2002 Con. [Thousands. Estimates are based on data from the 2002 Vehicle Inventory and Use Survey. Because of rounding, estimates may notbe 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 applicable 2 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 applicable 2 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: 2002 Con. [Thousands. Estimates are based on data from the 2002 Vehicle Inventory and Use Survey. Because of rounding, estimates may notbe 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 lease 5 :

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 applicable 2 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 applicable 6 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 applicable 6 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 applicable 6 83 842.7  81 581.8 2 260.9 1 681.3 567.2 12.3 S .2 

### HAZARDOUS MATERIALS CARRIED**7** 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 applicable 8 80 254.0  78 725.5 1 528.5 1 448.1 80.2 S V .2 

### EQUIPMENT TYPE **5 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: 2002 Con. [Thousands. Estimates are based on data from the 2002 Vehicle Inventory and Use Survey. Because of rounding, estimates may notbe 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 TYPE **5 9**  

### Con. 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 on board computer with communication capabilities 3 305.5  3 044.3 261.2 48.8 209.2 3.1 .1 4.2 Trip recorder or on board 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 applicable 10 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 applicable 2 1 978.0  1 978.0 V V V V V 5.7 Cylinders 11 :

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 displacement 11 :

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 applicable 2 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: 2002 Con. [Thousands. Estimates are based on data from the 2002 Vehicle Inventory and Use Survey. Because of rounding, estimates may notbe 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) 

### MAINTENANCE **5** 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 applicable 2 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 locations 12 :

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 applicable 10 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 applicable 10 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 applicable 10 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. 1 Comparability of estimates may vary across survey years due to changes in category definitions. 2Vehicles not in use. When the respondent had partial year ownership of the vehicle, annual miles were adjusted to reflect miles traveled when not owned by the respondent. 3Trucktractors not in use. 4 Lessees or lessors of pickups, minivans, other light vans, and sport utilities. 5 Detail lines do not add to total trucks because items were not applicable or multiple responses were possible. 6 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. 7 Distributed miles data are available in Table 8. 8 Includes pickups, minivans, other light vans, and sport utilities; all other vehicles that are rental or used for personal tran sportation; and vehicles not in use. 9 Pickups, 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, whe elchair lift, and winch. 10 Pickups, minivans, other light vans, and sport utilities. 11 Data were derived from administrative records. 12 Detail 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 availa ble 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 atwww.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 

### BUSINESS **1** 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 applicable 2 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 applicable 3 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 applicable 2 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 applicable 2 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: 2002 Con. [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 applicable 2 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 applicable 2 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 applicable 4 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: 2002 Con. [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 CHARACTERISTICS Con. 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 lease 5 :

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 applicable 2 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 applicable 6 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 applicable 6 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 applicable 6 1 037 513.5  968 166.5 22 296.0 9 009.4 38 041.6 .7 

### HAZARDOUS MATERIALS CARRIED**7** 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 applicable 8 981 119.1  960 800.3 11 293.6 2 042.8 6 982.3 .7 

### EQUIPMENT TYPE **5 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 on board computer with communication capabilities 66 964.4  42 213.8 1 899.5 653.9 22 197.2 3.6 Trip recorder or on board 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 applicable 10 969 555.5  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: 2002 Con. [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 applicable 2 1 761.4  1 654.3 33.6 37.8 35.7 13.8 Cylinders 11 :

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 displacement 11 :

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 applicable 2 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 applicable 2 1 761.4  1 654.3 33.6 37.8 35.7 13.8 

### MAINTENANCE **5** 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 applicable 2 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 applicable 2 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: 2002 Con. [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 ARRANGEMENT Con. Combinations Con.

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 locations 12 :

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 applicable 10 969 555.5  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 applicable 10 969 555.5  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 applicable 10 969 555.5  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. 1 Comparability of estimates may vary across survey years due to changes in category definitions. 2Vehicles not in use. When the respondent had partial year ownership of the vehicle, annual miles were adjusted to reflect miles traveled when not owned by the respondent. 3Trucktractors not in use. 4 Lessees or lessors of pickups, minivans, other light vans, and sport utilities. 5 Detail lines do not add to total trucks because items were not applicable or multiple responses were possible. 6 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. 7 Distributed miles data are available in Table 8. 8 Includes pickups, minivans, other light vans, and sport utilities; all other vehicles that are rental or used for personal tran sportation; and vehicles not in use. 9 Pickups, 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, whe elchair lift, and winch. 10 Pickups, minivans, other light vans, and sport utilities. 11 Data were derived from administrative records. 12 Detail 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 availa ble 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 atwww.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 

### BUSINESS **1** 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 applicable 2 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 applicable 3 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 applicable 2 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: 2002 Con. [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 applicable 2 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 applicable 2 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 applicable 2 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: 2002 Con. [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 lease 5 :

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 applicable 2 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 applicable 6 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 applicable 6 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 applicable 6 1 037 513.5  991 437.5 46 076.0 21 209.6 24 132.8 727.1 S .7 

### HAZARDOUS MATERIALS CARRIED**7** 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 applicable 8 981 119.1  957 359.0 23 760.1 18 118.6 5 631.9 S V .7 

### EQUIPMENT TYPE **5 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: 2002 Con. [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 TYPE **5 9**  

### Con. 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 on board 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 on board 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 applicable 10 969 555.5  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 applicable 2 1 761.4  1 761.4 V V V VV 13.8 Cylinders 11 :

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 displacement 11 :

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 applicable 2 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: 2002 Con. [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) 

### MAINTENANCE **5** 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 applicable 2 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 applicable 2 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 locations 12 :

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 applicable 10 969 555.5  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 applicable 10 969 555.5  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 applicable 10 969 555.5  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. 1 Comparability of estimates may vary across survey years due to changes in category definitions. 2Vehicles not in use. When the respondent had partial year ownership of the vehicle, annual miles were adjusted to reflect miles traveled when not owned by the respondent. 3Trucktractors not in use. 4 Lessees or lessors of pickups, minivans, other light vans, and sport utilities. 5 Detail lines do not add to total trucks because items were not applicable or multiple responses were possible. 6 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. 7 Distributed miles data are available in Table 8. 8 Includes pickups, minivans, other light vans, and sport utilities; all other vehicles that are rental or used for personal tran sportation; and vehicles not in use. 9 Pickups, 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, whe elchair lift, and winch. 10 Pickups, minivans, other light vans, and sport utilities. 11 Data were derived from administrative records. 12 Detail 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 availa ble 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 atwww.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 applicable 1 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 applicable 1 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 applicable 1 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 applicable 1 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 applicable 2 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 applicable 2 3 1 037 513.5  67 957.9 .7 1.1 

### PRODUCTS CARRIED**4** 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: 2002 Con. [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 CARRIED**4** 

### Con. 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 (non EPA 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 applicable 1 1 761.4  149.9 13.8 10.9 

### HAZARDOUS MATERIALS CARRIED**4** 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 applicable 1 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. 1 Vehicles not in use. When the respondent had partial year 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. 4 Detail 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 availa ble 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 atwww.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:

CV****

## C   

##  CV** **

## S **** 

## * 

#  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 anestimated 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 thistruck (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 Appendix A–1 Vehicle Inventory and Use Survey 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 CensusEC02TV-US2002 United States: 20022002 Economic CensusVehicle Inventory and Use SurveyGeographic Area SeriesUSCENSUSBUREAU