Stage II VRS Incremental Benefit Analysis

EPA’s Guidance on Removing Stage II Gasoline Vapor Control Programs from State Implementation 

Plans and Assessing Comparable Measures (henceforth will be referred to as the Guidance on Removing 

Stage II) provides for a method of calculating the incremental emissions benefit of keeping Stage II VRS 

versus the phase in of ORVR. The overall Stage II-ORVR increment is an area-wide emission control 

gain over the ozone season from Stage II installations at GDFs as ORVR is phased in. Calculation of this 

increment can also indicate the potential loss of emission reductions from removing Stage II. This 

equation (entitled Stage II VRS Incremental Benefit Equation) used in the calculation is:

(1) incrementi = Emissions Benefit of Stage II – Emissions Increase Due to Incompatibility, or

incrementi = (QSII)(1-QORVRi)(NiuSII) – (QSIIva)(CFi), where:

incrementi = the fractional reduction of VOCs from refueling in the nonattainment area during 

ozone season for a given end of calendar year.

i = year ending

QSII = fraction of gasoline throughput covered by Stage II vapor recovery systems

QORVRi = fraction of annual gallons of highway motor gasoline dispensed to ORVR-equipped 

vehicles

iuSII = The in-use Stage II control efficiency (e.g., if removes 100 percent of VOCs each time 

would use 1.0)

QSIIva = fraction of gasoline throughput covered by traditional vacuum assist Stage II VRS

CFi = Compatibility factor term which is determined from studies looking at excessive emissions 

produced by the incompatibility between vacuum assist Stage II VRS and ORVR which depends

in part on GDF designs and varies by year.

The increment for the Atlanta 13-county area has been calculated for the years 2012 through 2017. These 

calculations assume immediate deactivation of the requirement for all areas. The methodology and tables 

used to determine the values of the terms in the equation as they apply to Atlanta 13 county area can be 

found below. With these Atlanta-specific values included, the equation is further reduced.

(2) incrementi = (0.9)(1-QORVRi)(0.62) – (0.95)(0.765)(VMTORVRi), where:

QORVRi = fraction of annual gallons of highway motor gasoline dispensed to ORVR-equipped 

vehicles for a given year

VMTORVRi = fraction of vehicle miles traveled that are linked to ORVR equipped vehicles for a 

given year.
The fraction of vehicle miles traveled was directly provided by the EPA’s Guidance Document, Appendix 

A, Table A-1 (USEPA, “Guidance on Removing Stage II Gasoline Vapor Control Programs from State 

Implementation Plans and Assessing Comparable Measures,” Office of Air Quality Planning and 

Standards, EPA-457/B-12-001, August 7, 2012). For more details, consult EPA Memorandum “Updated 

data for ORVR Widespread Use Assessment” February 29, 2012, in docket (number EPA-HQ-OAR2010-1076).

The final calculations of the increment were made and listed in Table A-1 after locating in the Guidance 

on Removing Stage II the values to plug into the reduced equation for QORVRi and VMTORVRi for years 

ending in 2012-2017.
Table A-1

Incremental Benefit of Maintaining Stage II VRS in Atlanta with ORVR Phase-In

Year Ending QORVR VMTORVR

(fraction)

Incremental Benefit Incremental Benefit

(fraction) (fraction) (fractional reduction) (tons/day)

2012 0.777 0.800 0.0659 2.26

2013 0.810 0.834 0.0454 1.56

2014 0.840 0.863 0.0266 0.92

2015 0.865 0.888 0.0108 0.37

2016 0.886 0.909 -0.00245 -0.085

2017 0.903 0.925 -0.0131 -0.450

As shown in Table A-1 above, the increment declines from 2.26 tons/day in 2012 to zero during 2016 

before demonstrating a detrimental effect of -0.450 tons/day by 2017. This indicates a disbenefit over 

time. Details regarding the unit conversion of increment from fractional reduction to tons/day reduction 

including the need for this conversion are discussed on pages A-6 to A-8. Table A-2 provides an 

overview of the minimal initial impact that Stage II removal would have on Atlanta’s ability to attain the 

ozone NAAQS standards. Note that fractions are predominately used in Table A-1 and in the description 

of the equation variables in this Appendix while the tables in the Guidance on Removing Stage II use 

percentages. Therefore, each value in those tables in the guidance was divided by 100 before proceeding 

further with the calculations of the incremental benefit.
Table A-2

Impact of Stage II Removal on Ability of Atlanta to Attain Ozone NAAQS Standards*

Year 

ending

2006 VOC 

MVEB

2008 Ozone 

Maint. Plan 

Baseline 

VOC 

emissions

VOC On-Road 

emissions 

inventory with 

Stage II VRS**

VOC 

Stage II 

increment

VOC emissions 

inventory w/o

Stage II VRS**

VOC Stage II 

increment as % 

of emissions 

inventory

(tons/day) (tons/day) (tons/day) (tons/day) (tons/day) (%)

2008 171.83 165.53 165.53 N/A N/A N/A

2012 171.83 165.53 127.33 2.26 N/A N/A

2013 171.83 165.53 117.78 1.56 N/A N/A

2014 171.83 165.53 108.23 0.92 109.15 0.87

2015 171.83 165.53 98.68 0.37 99.05 0.38

2016 171.83 165.53 89.13 -0.085 89.05 -0.095

* All emissions inventory, baseline and budget values in this chart refer solely to on-road mobile source emissions

** Emissions inventory values in this table for 2008 is based on the 2008 Atlanta Ozone Maintenance Plan baseline

and projected inventory for 2016 were taken from Volume II: Plan 2040 Conformity Determination Report (CDR)’s 

transportation conformity demonstration dated July 2011. Inventory numbers for intermediate years were calculated 

by assuming a linear trend in VOC emissions from 2008-2016.

As shown in Table A-2, Stage II VRS increment never exceeds 1% of the VOC emissions inventory 

before decreasing to zero from 2014-2016. It is observed that VOC on-road mobile source emissions 

inventory for cases of Stage II VRS control system removal from 2014-2016 is well below the 2006 

motor vehicle budget (MVEB) from the Atlanta Early Progress SIP and 2008 baseline year emissions 

levels listed in the Atlanta 8-Hour Ozone Maintenance Plan. 

Atlanta-Based Values to be Used In the Stage II VRS Incremental Benefit Equation

The Stage II Removal Guidance provides an equation (Stage II VRS Incremental Benefit 

Equation) along with sample calculations, recommendations and tables to be used by the States 

to quantify the incremental benefit of Stage II VRS controls. Using this guidance, the variables 

in the equation are assigned values specific to the Atlanta 13 county area as depicted below in 

Table A-3. 
Table A-3

Atlanta Based Values Used in Stage II Incremental Benefit Equation

Variable Value Basis for Value

QSII 0.9 Georgia adopted the CAA exemptions provisions for small 

GDFs (<50,000 gal/month) and 0.9 is default value for such 

states in Stage II Removal Guidance, similar to our own 

estimates of 2267 out of 2587 facilities containing Stage II 

controls (0.88, rounds to 0.9).

QORVRi See Table 1 Gasoline Dispensed Fraction for a given year provided by

Table A-1 in Stage II Removal Guidance for years 2012-2017

iuSII 0.62 Frequency of inspections of Stage II VRS controls is now 

every 3 years which is considered “minimal and less frequent” 

which is matched to a Stage II VRS efficiency of 0.62 in the 

Waiver Rule (p. 28774)*. 

QSIIva 0.95 13-county percentage of facilities with vacuum assist systems 

as suggested by the Guidance on Removing Stage II and 

supported by the Georgia EPD Engines & Fuels Unit. There 

are approximately 2587 facilities with Stage II in place with 

2522 of them using vacuum assist Stage II. These numbers 

demonstrated a slightly higher QSIIva value than guidance 

(0.97 vs. 0.95), but are going with guidance to be conservative 

and account for year to year variation. 

CFi 0.07645*VMTORVRi

(See Table 1 for 

VMTORVRi values)

0.07645 is control efficiency loss estimate from weighing two 

technologies tested in California Air Resources Board study.

This value is what states are asked to use**.

VMT percentage (VMTORVRi) for a given year is provided by

Table A-1 in Guidance on Removing Stage II for years 2012-

2017.

*The Waiver Rule cites: Technical	Guidance	– Stage	II	Vapor	Recovery	Systems	for	Control	of	Vehicle	Refueling	

at	Gasoline	Dispensing	Facilities	Volume	I:	Chapters,”	EPA-450/3-91-022a,	November	1991.	This	study	is	a

composite	of	multiple	studies.

**EPA Memorandum Calculating Stage II Vacuum Assist Stage II VRS and ORVR Excess Emissions, Glenn 

Passavant, May 2012

The gasoline consumption values and projections were taken from the Department of Energy’s 

2011 “EIA Annual Outlook (AEO) – Liquid Fuels Supply and Disposition Reference case table” 

which is referenced on page 20 in EPA’s guidance document with the data source provided by 

EPA on the same page under footnote 29. Other options were provided by the guidance, but this 
was the most straightforward approach. Furthermore, EPA’s guidance document recommends 

states use Table A-4 in the guidance’s appendix to break down the national gasoline 

consumption numbers into consumption by the relevant state (Georgia in this case) for the base 

case (year 2010) and then multiply this value by the ratio of projected consumption/2010 

consumption to obtain the future year values seen in this SIP. The AEO report projected in 2017 

that gasoline consumption would decrease slightly relative to 2016. Vehicle miles traveled and 

population is quantified through the transportation planning process whereas gasoline 

consumption is based on Department of Energy, FHWA and other sources. Vehicle miles 

traveled can decrease while gasoline consumption flatten out or decrease slightly due to 

improvements in fuel efficiency of motor vehicles as evidenced by the strengthening of CAFÉ 

standards

Converting Stage II VPS Fractional Incremental Benefit to Tons/Day

The Guidance on Removing Stage II provides an additional equation with examples and 

recommendations on how to convert the Stage II increment in fractional form into tons/day VOC 

reduction. This conversion is necessary as tons/day reduction benefit values are used in this 

document in Tables 1-2 to demonstrate non-interference. The equation is:

Incrementi (tons/day) = (Incrementi (fraction))(GCi)(EF)(conversion factor),

where GCi = (GC2010) (GCi/GC2010)(ATLfraction)

The description of the variables and the values to be plugged into the equation are provided in 

Table A-4.
Table A-4

Variables and Associated Values Needed to Convert Fractional VOC Emission Benefit to 

Tons/Day

Variable Value Basis for Value

Incrementi (fraction) See Table 1 For a given end of year i, the fractional increment can be obtained from 

Table A-1 in this Appendix. For details regarding how it was calculated, 

see Section 3 and page 1-2 of this Appendix.

GC2010 5.9588x1010 Gallons of gasoline consumed in the United States in 2010 according to 

the FHWA Highway Statistics-Monthly gasoline reported by StatesMF33GA table (2012 version). To get a value for a future year value 

since more recent data is not available, one needs to grow this value 

using projections. To get Atlanta’s gasoline consumed value, GCi, for a 

future year i, the GC2010 value needs to be multiplied by the ratio of 

future year consumption to 2010 consumption and by the fraction of 

national gasoline consumed in Atlanta (ATLfraction). The value for this 

ratio, called “GCi/GC2010”, and ATLfraction is provided below.

(GCi/GC2010) 2012:1.0343

2013:1.0399

2014:1.0410

2015:1.0421

2016:1.0443

2017:1.0377

Ratio of given year’s projected national gasoline consumption to 

gasoline consumption in 2010. This ratio is multiplied by the known 

2010 national gasoline consumption value, GC2010 to grow the value to 

future years. Then to obtain the gasoline consumed specifically in 

Atlanta, this future value is multiplied by the fraction of national 

gasoline consumption occurring in Atlanta (ATLfraction). These gasoline 

consumption statistics and future projections are provided by the 

Department of Energy’s AIA Annual Outlook (AEO)-Liquid Fuels 

Supply and Disposition-Reference case table (2012 version). This ratio 

is provided here for the years investigated, 2012-2017.

ATLfraction 0.01677214 Fraction of national gasoline supply consumed by the Atlanta 13-county 

area according to Table A-4 in the Guidance on Removing Stage II*.

EF 4.6 Uncontrolled displacement refueling emission factor in units of grams 

per gallon consumed which quantifies the incompatibility between 

ORVR and Stage II VRS. Value for Georgia provided by Table A-7 in 

the Guidance on Removing Stage II *.

Conversion factor 7.20465x10-9 Converts g/season to tons/day. There are 1.10x10-6tons in a gram and 

153 days in an ozone season. Therefore,

(1.10x10-6ton/g)/153d = 7.20465x10-9ton/g/d

* See Appendix A of Guidance on Removing Stage II for the equation that was used to determine EF for each state 

and the table (Table A-7) listing EF by state including Georgia. This guidance also provides additional tables 

(Tables A-2 and A-3) to allow States to determine EF on their own using the equation along with local Reid Vapor 

Pressure data. Georgia compared EF calculated on their own with the Table A-7 number and obtained the same 

quantity, 4.6g/gal.
Using the values in Table A-4, the equation for the end of 2013, for example, is reduced to:

Increment2013(tons/day) = (Increment2013(fraction))(GC2013)(4.6g/gal)( 7.20465x10-9ton/g/d)=

(Increment2013(fraction)) (GC2010) (GCi/GC2010)(ATLfraction) )(4.6g/gal)( 7.20465x10-9ton/g/d)=

(0.0454)( 5.9588x1010 gal)(1.0399)( 0.01677214) (4.6g/gal)( 7.20465x10-9 ton/g/d)=1.56 tons/d

Vehicle class for Stage II comprises MOVES vehicle types 21, 31, and 32 which are passenger cars, 

passenger trucks, and commercial trucks. Of these vehicle types, only those powered by gasoline resulting 

in Stage II vehicle recovery applicablitiy were used in the analysis.

Table A-5

Age Distribution of Vehicles Used in VOC emission analysis (13 county area out of the 20 

county 1997 ozone maintenance area)

Vehicle Class Year Age Fraction of Vehicles 

Motorcycle 2008 0 0.0005

Motorcycle 2008 1 0.10051

Motorcycle 2008 2 0.118612

Motorcycle 2008 3 0.09931

Motorcycle 2008 4 0.075108

Motorcycle 2008 5 0.061206

Motorcycle 2008 6 0.053505

Motorcycle 2008 7 0.047805

Motorcycle 2008 8 0.039704

Motorcycle 2008 9 0.036204

Motorcycle 2008 10 0.033903

Motorcycle 2008 11 0.333633

Motorcycle 2008 12 0

Motorcycle 2008 13 0

Motorcycle 2008 14 0

Motorcycle 2008 15 0

Motorcycle 2008 16 0

Motorcycle 2008 17 0

Motorcycle 2008 18 0

Motorcycle 2008 19 0

Motorcycle 2008 20 0

Motorcycle 2008 21 0

Motorcycle 2008 22 0

Motorcycle 2008 23 0

Motorcycle 2008 24 0

Motorcycle 2008 25 0
Motorcycle 2008 26

0

Motorcycle 2008 270

Motorcycle 2008 280

Motorcycle 2008 290

Motorcycle 2008 300

Passenger Car 20080 0.023802

Passenger Car 20081 0.071207

Passenger Car 20082 0.068707

Passenger Car 20083 0.077108

Passenger Car 20084 0.072907

Passenger Car 20085 0.067107

Passenger Car 20086 0.068907

Passenger Car 20087 0.065607

Passenger Car 20088 0.076308

Passenger Car 20089 0.061806

Passenger Car 2008 10 0.055906

Passenger Car 2008 11 0.046105

Passenger Car 2008 12 0.039904

Passenger Car 2008 13 0.037004

Passenger Car 2008 14 0.032503

Passenger Car 2008 15 0.026703

Passenger Car 2008 16 0.021402

Passenger Car 2008 17 0.016602

Passenger Car 2008 18 0.012601

Passenger Car 2008 19 0.008901

Passenger Car 2008 20 0.005401

Passenger Car 2008 21 0.0032

Passenger Car 2008 22 0.0026

Passenger Car 2008 23 0.0023

Passenger Car 2008 24 0.002035

Passenger Car 2008 25 0.0018

Passenger Car 2008 26 0.001592

Passenger Car 2008 27 0.001409

Passenger Car 2008 28 0.001246

Passenger Car 2008 29 0.001102

Passenger Car 2008 30 0.026219

Passenger Truck 20080 0.023121

Passenger Truck 20081 0.071154

Passenger Truck 20082 0.105903

Passenger Truck 20083 0.075177

Passenger Truck 20084 0.061693
Passenger Truck 2008

5 0.069989

Passenger Truck 20086 0.083159

Passenger Truck 20087 0.026784

Passenger Truck 20088 0.039136

Passenger Truck 20089 0.043512

Passenger Truck 2008 10 0.041972

Passenger Truck 2008 11 0.033861

Passenger Truck 2008 12 0.029772

Passenger Truck 2008 13 0.039356

Passenger Truck 2008 14 0.041676

Passenger Truck 2008 15 0.043214

Passenger Truck 2008 16 0.029028

Passenger Truck 2008 17 0.035318

Passenger Truck 2008 18 0.030859

Passenger Truck 2008 19 0.025462

Passenger Truck 2008 20 0.017469

Passenger Truck 2008 21 0.01364

Passenger Truck 2008 22 0.015763

Passenger Truck 2008 23 0.000115

Passenger Truck 2008 24 0.000066

Passenger Truck 2008 25 0.000044

Passenger Truck 2008 26 0.000029

Passenger Truck 2008 27 0.000018

Passenger Truck 2008 28 0.000012

Passenger Truck 2008 29 0.000008

Passenger Truck 2008 30 0.002691

Light Commercial Truck 20080 0.026942

Light Commercial Truck 20081 0.078328

Light Commercial Truck 20082 0.106484

Light Commercial Truck 20083 0.079146

Light Commercial Truck 20084 0.067242

Light Commercial Truck 20085 0.06582

Light Commercial Truck 20086 0.080436

Light Commercial Truck 20087 0.02973

Light Commercial Truck 20088 0.040318

Light Commercial Truck 20089 0.042595

Light Commercial Truck 2008 10 0.040104

Light Commercial Truck 2008 11 0.031972

Light Commercial Truck 2008 12 0.027782

Light Commercial Truck 2008 13 0.036454

Light Commercial Truck 2008 14 0.038931
Light Commercial Truck 2008 15 0.040401

Light Commercial Truck 2008 16 0.027173

Light Commercial Truck 2008 17 0.033193

Light Commercial Truck 2008 18 0.029596

Light Commercial Truck 2008 19 0.024823

Light Commercial Truck 2008 20 0.018135

Light Commercial Truck 2008 21 0.013929

Light Commercial Truck 2008 22 0.015422

Light Commercial Truck 2008 23 0.000146

Light Commercial Truck 2008 24 0.000067

Light Commercial Truck 2008 25 0.000039

Light Commercial Truck 2008 26 0.000026

Light Commercial Truck 2008 27 0.000019

Light Commercial Truck 2008 28 0.000013

Light Commercial Truck 2008 29 0.000009

Light Commercial Truck 2008 30 0.004724

Intercity Bus 20080 0.0029

Intercity Bus 20081 0.0279

Intercity Bus 20082 0.0999

Intercity Bus 20083 0.1233

Intercity Bus 20084 0.0602

Intercity Bus 20085 0.0595

Intercity Bus 20086 0.0426

Intercity Bus 20087 0.0587

Intercity Bus 20088 0.0206

Intercity Bus 20089 0.0492

Intercity Bus 2008 10 0.0286

Intercity Bus 2008 11 0.0477

Intercity Bus 2008 12 0.0066

Intercity Bus 2008 13 0.174

Intercity Bus 2008 14 0.0382

Intercity Bus 2008 15 0.0668

Intercity Bus 2008 16 0.0125

Intercity Bus 2008 17 0.025

Intercity Bus 2008 18 0.0117

Intercity Bus 2008 19 0.0081

Intercity Bus 2008 20 0.0125

Intercity Bus 2008 21 0.0147

Intercity Bus 2008 22 0.0088

Intercity Bus 2008 230

Intercity Bus 2008 240
Intercity Bus 2008 25

0

Intercity Bus 2008 260

Intercity Bus 2008 270

Intercity Bus 2008 280

Intercity Bus 2008 290

Intercity Bus 2008 300

Transit Bus 20080 0.0029

Transit Bus 20081 0.0279

Transit Bus 20082 0.0999

Transit Bus 20083 0.1233

Transit Bus 20084 0.0602

Transit Bus 20085 0.0595

Transit Bus 20086 0.0426

Transit Bus 20087 0.0587

Transit Bus 20088 0.0206

Transit Bus 20089 0.0492

Transit Bus 2008 10 0.0286

Transit Bus 2008 11 0.0477

Transit Bus 2008 12 0.0066

Transit Bus 2008 13 0.174

Transit Bus 2008 14 0.0382

Transit Bus 2008 15 0.0668

Transit Bus 2008 16 0.0125

Transit Bus 2008 17 0.025

Transit Bus 2008 18 0.0117

Transit Bus 2008 19 0.0081

Transit Bus 2008 20 0.0125

Transit Bus 2008 21 0.0147

Transit Bus 2008 22 0.0088

Transit Bus 2008 230

Transit Bus 2008 240

Transit Bus 2008 250

Transit Bus 2008 260

Transit Bus 2008 270

Transit Bus 2008 280

Transit Bus 2008 290

Transit Bus 2008 300

School Bus 20080 0.036622

School Bus 20081 0.054844

School Bus 20082 0.050577

School Bus 20083 0.073061
School Bus 2008

4 0.064071

School Bus 20085 0.071838

School Bus 20086 0.048141

School Bus 20087 0.064119

School Bus 20088 0.079193

School Bus 20089 0.024764

School Bus 2008 10 0.058797

School Bus 2008 11 0.045612

School Bus 2008 12 0.064454

School Bus 2008 13 0.07385

School Bus 2008 14 0.031278

School Bus 2008 15 0.049673

School Bus 2008 16 0.014186

School Bus 2008 17 0.011503

School Bus 2008 18 0.013431

School Bus 2008 19 0.010755

School Bus 2008 20 0.007536

School Bus 2008 21 0.005224

School Bus 2008 22 0.006442

School Bus 2008 23 0.008637

School Bus 2008 24 0.011178

School Bus 2008 25 0.008357

School Bus 2008 26 0.000128

School Bus 2008 27 0.000084

School Bus 2008 28 0.000054

School Bus 2008 29 0.000035

School Bus 2008 30 0.011556

Refuse Truck 20080 0.049341

Refuse Truck 20081 0.069878

Refuse Truck 20082 0.084288

Refuse Truck 20083 0.078985

Refuse Truck 20084 0.074601

Refuse Truck 20085 0.06037

Refuse Truck 20086 0.050813

Refuse Truck 20087 0.049757

Refuse Truck 20088 0.0521

Refuse Truck 20089 0.040936

Refuse Truck 2008 10 0.037922

Refuse Truck 2008 11 0.03268

Refuse Truck 2008 12 0.03161

Refuse Truck 2008 13 0.029834
Refuse Truck 2008 14 0.032804

Refuse Truck 2008 15 0.031624

Refuse Truck 2008 16 0.027274

Refuse Truck 2008 17 0.024091

Refuse Truck 2008 18 0.026403

Refuse Truck 2008 19 0.018246

Refuse Truck 2008 20 0.01424

Refuse Truck 2008 21 0.012958

Refuse Truck 2008 22 0.012191

Refuse Truck 2008 23 0.011305

Refuse Truck 2008 24 0.010775

Refuse Truck 2008 25 0.008633

Refuse Truck 2008 26 0.007523

Refuse Truck 2008 27 0.006586

Refuse Truck 2008 28 0.006176

Refuse Truck 2008 29 0.005322

Refuse Truck 2008 30 0.000734

Single Unit Short-haul Truck 2008 0 0.048225

Single Unit Short-haul Truck 2008 1 0.048863

Single Unit Short-haul Truck 2008 2 0.074115

Single Unit Short-haul Truck 2008 3 0.082434

Single Unit Short-haul Truck 2008 4 0.079271

Single Unit Short-haul Truck 2008 5 0.062335

Single Unit Short-haul Truck 2008 6 0.046762

Single Unit Short-haul Truck 2008 7 0.045186

Single Unit Short-haul Truck 2008 8 0.059546

Single Unit Short-haul Truck 2008 9 0.038632

Single Unit Short-haul Truck 2008 10 0.034284

Single Unit Short-haul Truck 2008 11 0.030965

Single Unit Short-haul Truck 2008 12 0.031778

Single Unit Short-haul Truck 2008 13 0.031018

Single Unit Short-haul Truck 2008 14 0.037529

Single Unit Short-haul Truck 2008 15 0.037003

Single Unit Short-haul Truck 2008 16 0.027646

Single Unit Short-haul Truck 2008 17 0.025152

Single Unit Short-haul Truck 2008 18 0.028021

Single Unit Short-haul Truck 2008 19 0.019005

Single Unit Short-haul Truck 2008 20 0.011815

Single Unit Short-haul Truck 2008 21 0.009983

Single Unit Short-haul Truck 2008 22 0.010546

Single Unit Short-haul Truck 2008 23 0.01134
Single Unit Short-haul Truck 2008 24 0.01193

Single Unit Short-haul Truck 2008 25 0.00392

Single Unit Short-haul Truck 2008 26 0.003254

Single Unit Short-haul Truck 2008 27 0.002738

Single Unit Short-haul Truck 2008 28 0.002479

Single Unit Short-haul Truck 2008 29 0.002093

Single Unit Short-haul Truck 2008 30 0.042131

Single Unit Long-haul Truck 2008 0 0.051583

Single Unit Long-haul Truck 2008 1 0.050056

Single Unit Long-haul Truck 2008 2 0.076553

Single Unit Long-haul Truck 2008 3 0.085008

Single Unit Long-haul Truck 2008 4 0.081844

Single Unit Long-haul Truck 2008 5 0.064296

Single Unit Long-haul Truck 2008 6 0.048084

Single Unit Long-haul Truck 2008 7 0.04642

Single Unit Long-haul Truck 2008 8 0.059963

Single Unit Long-haul Truck 2008 9 0.039604

Single Unit Long-haul Truck 2008 10 0.034566

Single Unit Long-haul Truck 2008 11 0.031964

Single Unit Long-haul Truck 2008 12 0.032957

Single Unit Long-haul Truck 2008 13 0.031111

Single Unit Long-haul Truck 2008 14 0.037621

Single Unit Long-haul Truck 2008 15 0.037514

Single Unit Long-haul Truck 2008 16 0.027761

Single Unit Long-haul Truck 2008 17 0.025128

Single Unit Long-haul Truck 2008 18 0.027729

Single Unit Long-haul Truck 2008 19 0.018184

Single Unit Long-haul Truck 2008 20 0.011305

Single Unit Long-haul Truck 2008 21 0.009725

Single Unit Long-haul Truck 2008 22 0.009872

Single Unit Long-haul Truck 2008 23 0.01001

Single Unit Long-haul Truck 2008 24 0.01035

Single Unit Long-haul Truck 2008 25 0.003583

Single Unit Long-haul Truck 2008 26 0.003004

Single Unit Long-haul Truck 2008 27 0.002552

Single Unit Long-haul Truck 2008 28 0.002335

Single Unit Long-haul Truck 2008 29 0.001984

Single Unit Long-haul Truck 2008 30 0.027337

Motor Home 2008 0 0.039046

Motor Home 2008 1 0.032525

Motor Home 2008 2 0.061508
Motor Home 2008 3 0.078129

Motor Home 2008 4 0.075746

Motor Home 2008 5 0.058638

Motor Home 2008 6 0.040861

Motor Home 2008 7 0.039175

Motor Home 2008 8 0.06322

Motor Home 2008 9 0.034721

Motor Home 2008 10 0.031256

Motor Home 2008 11 0.027359

Motor Home 2008 12 0.028912

Motor Home 2008 13 0.031535

Motor Home 2008 14 0.040286

Motor Home 2008 15 0.039122

Motor Home 2008 16 0.02759

Motor Home 2008 17 0.025884

Motor Home 2008 18 0.029773

Motor Home 2008 19 0.021554

Motor Home 2008 20 0.011566

Motor Home 2008 21 0.008748

Motor Home 2008 22 0.011203

Motor Home 2008 23 0.014719

Motor Home 2008 24 0.016648

Motor Home 2008 25 0.00178

Motor Home 2008 26 0.001177

Motor Home 2008 27 0.000766

Motor Home 2008 28 0.000497

Motor Home 2008 29 0.000321

Motor Home 2008 30 0.105735

Combination Short-haul Truck 2008 0 0.04779

Combination Short-haul Truck 2008 1 0.072456

Combination Short-haul Truck 2008 2 0.084584

Combination Short-haul Truck 2008 3 0.077142

Combination Short-haul Truck 2008 4 0.072573

Combination Short-haul Truck 2008 5 0.059065

Combination Short-haul Truck 2008 6 0.050749

Combination Short-haul Truck 2008 7 0.049819

Combination Short-haul Truck 2008 8 0.050756

Combination Short-haul Truck 2008 9 0.040788

Combination Short-haul Truck 2008 10 0.038333

Combination Short-haul Truck 2008 11 0.032429

Combination Short-haul Truck 2008 12 0.030981
Combination Short-haul Truck 2008 13 0.029607

Combination Short-haul Truck 2008 14 0.032044

Combination Short-haul Truck 2008 15 0.030547

Combination Short-haul Truck 2008 16 0.02716

Combination Short-haul Truck 2008 17 0.023944

Combination Short-haul Truck 2008 18 0.02631

Combination Short-haul Truck 2008 19 0.018552

Combination Short-haul Truck 2008 20 0.014869

Combination Short-haul Truck 2008 21 0.01354

Combination Short-haul Truck 2008 22 0.012786

Combination Short-haul Truck 2008 23 0.011981

Combination Short-haul Truck 2008 24 0.011409

Combination Short-haul Truck 2008 25 0.009523

Combination Short-haul Truck 2008 26 0.0083

Combination Short-haul Truck 2008 27 0.007265

Combination Short-haul Truck 2008 28 0.006811

Combination Short-haul Truck 2008 29 0.005868

Combination Short-haul Truck 2008 30 0.002021

Combination Long-haul Truck 2008 0 0.045964

Combination Long-haul Truck 2008 1 0.077391

Combination Long-haul Truck 2008 2 0.085794

Combination Long-haul Truck 2008 3 0.074575

Combination Long-haul Truck 2008 4 0.069676

Combination Long-haul Truck 2008 5 0.057287

Combination Long-haul Truck 2008 6 0.051006

Combination Long-haul Truck 2008 7 0.050275

Combination Long-haul Truck 2008 8 0.048475

Combination Long-haul Truck 2008 9 0.040795

Combination Long-haul Truck 2008 10 0.039143

Combination Long-haul Truck 2008 11 0.032259

Combination Long-haul Truck 2008 12 0.030188

Combination Long-haul Truck 2008 13 0.029228

Combination Long-haul Truck 2008 14 0.03071

Combination Long-haul Truck 2008 15 0.028768

Combination Long-haul Truck 2008 16 0.026989

Combination Long-haul Truck 2008 17 0.023673

Combination Long-haul Truck 2008 18 0.02606

Combination Long-haul Truck 2008 19 0.018868

Combination Long-haul Truck 2008 20 0.015849

Combination Long-haul Truck 2008 21 0.014508

Combination Long-haul Truck 2008 22 0.013658
Combination Long-haul Truck 2008 23 0.012814

Combination Long-haul Truck 2008 24 0.012098

Combination Long-haul Truck 2008 25 0.011015

Combination Long-haul Truck 2008 26 0.009616

Combination Long-haul Truck 2008 27 0.008424

Combination Long-haul Truck 2008 28 0.007902

Combination Long-haul Truck 2008 29 0.006811

Combination Long-haul Truck 2008 30 0.000182

Table A-6

Age Distribution of Vehicles Used in VOC emission analysis (7 county area out of the 20 

county 1997 ozone maintenance area)

Vehicle Class Year Age Fraction of Vehicles 

Motorcycle 2008 0 0.0005

Motorcycle 2008 1 0.0984

Motorcycle 2008 2 0.1081

Motorcycle 2008 3 0.0942

Motorcycle 2008 4 0.0741

Motorcycle 2008 5 0.0577

Motorcycle 2008 6 0.0549

Motorcycle 2008 7 0.0472

Motorcycle 2008 8 0.0387

Motorcycle 2008 9 0.0364

Motorcycle 2008 10 0.0263

Motorcycle 2008 11 0.3635

Motorcycle 2008 12 0

Motorcycle 2008 13 0

Motorcycle 2008 14 0

Motorcycle 2008 15 0

Motorcycle 2008 16 0

Motorcycle 2008 17 0

Motorcycle 2008 18 0

Motorcycle 2008 19 0

Motorcycle 2008 20 0

Motorcycle 2008 21 0

Motorcycle 2008 22 0

Motorcycle 2008 23 0

Motorcycle 2008 24 0

Motorcycle 2008 25 0
Motorcycle 2008 26

0

Motorcycle 2008 270

Motorcycle 2008 280

Motorcycle 2008 290

Motorcycle 2008 300

Passenger Car 20080 0.009901

Passenger Car 20081 0.044104

Passenger Car 20082 0.049405

Passenger Car 20083 0.057706

Passenger Car 20084 0.054905

Passenger Car 20085 0.053105

Passenger Car 20086 0.057206

Passenger Car 20087 0.057606

Passenger Car 20088 0.069907

Passenger Car 20089 0.061106

Passenger Car 2008 10 0.058806

Passenger Car 2008 11 0.050405

Passenger Car 2008 12 0.048005

Passenger Car 2008 13 0.045005

Passenger Car 2008 14 0.045505

Passenger Car 2008 15 0.040104

Passenger Car 2008 16 0.033603

Passenger Car 2008 17 0.029303

Passenger Car 2008 18 0.025703

Passenger Car 2008 19 0.019702

Passenger Car 2008 20 0.012201

Passenger Car 2008 21 0.007001

Passenger Car 2008 22 0.006501

Passenger Car 2008 23 0.005601

Passenger Car 2008 24 0.004825

Passenger Car 2008 25 0.004157

Passenger Car 2008 26 0.003581

Passenger Car 2008 27 0.003086

Passenger Car 2008 28 0.002658

Passenger Car 2008 29 0.00229

Passenger Car 2008 30 0.037008

Passenger Truck 20080 0.0134

Passenger Truck 20081 0.040861

Passenger Truck 20082 0.047061

Passenger Truck 20083 0.047678

Passenger Truck 20084 0.049802
Passenger Truck 2008

5 0.055112

Passenger Truck 20086 0.070443

Passenger Truck 20087 0.029079

Passenger Truck 20088 0.039684

Passenger Truck 20089 0.046467

Passenger Truck 2008 10 0.04476

Passenger Truck 2008 11 0.038319

Passenger Truck 2008 12 0.035567

Passenger Truck 2008 13 0.047014

Passenger Truck 2008 14 0.053968

Passenger Truck 2008 15 0.058407

Passenger Truck 2008 16 0.03932

Passenger Truck 2008 17 0.052093

Passenger Truck 2008 18 0.051714

Passenger Truck 2008 19 0.044402

Passenger Truck 2008 20 0.031351

Passenger Truck 2008 21 0.02613

Passenger Truck 2008 22 0.030012

Passenger Truck 2008 23 0.000478

Passenger Truck 2008 24 0.000436

Passenger Truck 2008 25 0.000422

Passenger Truck 2008 26 0.000402

Passenger Truck 2008 27 0.000372

Passenger Truck 2008 28 0.000356

Passenger Truck 2008 29 0.000343

Passenger Truck 2008 30 0.004548

Light Commercial Truck 20080 0.015685

Light Commercial Truck 20081 0.042317

Light Commercial Truck 20082 0.049047

Light Commercial Truck 20083 0.051342

Light Commercial Truck 20084 0.055018

Light Commercial Truck 20085 0.051403

Light Commercial Truck 20086 0.06946

Light Commercial Truck 20087 0.032822

Light Commercial Truck 20088 0.041934

Light Commercial Truck 20089 0.046121

Light Commercial Truck 2008 10 0.04344

Light Commercial Truck 2008 11 0.03658

Light Commercial Truck 2008 12 0.033358

Light Commercial Truck 2008 13 0.043466

Light Commercial Truck 2008 14 0.050827
Light Commercial Truck 2008 15 0.055037

Light Commercial Truck 2008 16 0.037184

Light Commercial Truck 2008 17 0.049276

Light Commercial Truck 2008 18 0.049831

Light Commercial Truck 2008 19 0.043615

Light Commercial Truck 2008 20 0.032879

Light Commercial Truck 2008 21 0.026545

Light Commercial Truck 2008 22 0.029535

Light Commercial Truck 2008 23 0.000493

Light Commercial Truck 2008 24 0.000405

Light Commercial Truck 2008 25 0.000367

Light Commercial Truck 2008 26 0.000361

Light Commercial Truck 2008 27 0.000393

Light Commercial Truck 2008 28 0.000386

Light Commercial Truck 2008 29 0.000372

Light Commercial Truck 2008 30 0.010501

Intercity Bus 200800

Intercity Bus 20081 0.039212

Intercity Bus 20082 0.107832

Intercity Bus 20083 0.078424

Intercity Bus 20084 0.039212

Intercity Bus 20085 0.068621

Intercity Bus 20086 0.019606

Intercity Bus 20087 0.196159

Intercity Bus 20088 0.098029

Intercity Bus 20089 0.039212

Intercity Bus 2008 10 0.049015

Intercity Bus 2008 11 0.019606

Intercity Bus 2008 12 0.019606

Intercity Bus 2008 13 0.009803

Intercity Bus 2008 14 0.019606

Intercity Bus 2008 150

Intercity Bus 2008 16 0.019606

Intercity Bus 2008 17 0.009803

Intercity Bus 2008 18 0.009803

Intercity Bus 2008 19 0.019606

Intercity Bus 2008 20 0.009803

Intercity Bus 2008 21 0.078424

Intercity Bus 2008 22 0.049015

Intercity Bus 2008 230

Intercity Bus 2008 240
Intercity Bus 2008 25

0

Intercity Bus 2008 260

Intercity Bus 2008 270

Intercity Bus 2008 280

Intercity Bus 2008 290

Intercity Bus 2008 300

Transit Bus 200800

Transit Bus 20081 0.039212

Transit Bus 20082 0.107832

Transit Bus 20083 0.078424

Transit Bus 20084 0.039212

Transit Bus 20085 0.068621

Transit Bus 20086 0.019606

Transit Bus 20087 0.196159

Transit Bus 20088 0.098029

Transit Bus 20089 0.039212

Transit Bus 2008 10 0.049015

Transit Bus 2008 11 0.019606

Transit Bus 2008 12 0.019606

Transit Bus 2008 13 0.009803

Transit Bus 2008 14 0.019606

Transit Bus 2008 150

Transit Bus 2008 16 0.019606

Transit Bus 2008 17 0.009803

Transit Bus 2008 18 0.009803

Transit Bus 2008 19 0.019606

Transit Bus 2008 20 0.009803

Transit Bus 2008 21 0.078424

Transit Bus 2008 22 0.049015

Transit Bus 2008 230

Transit Bus 2008 240

Transit Bus 2008 250

Transit Bus 2008 260

Transit Bus 2008 270

Transit Bus 2008 280

Transit Bus 2008 290

Transit Bus 2008 300

School Bus 20080 0.064774

School Bus 20081 0.015322

School Bus 20082 0.068632

School Bus 20083 0.063226
School Bus 2008

4 0.068425

School Bus 20085 0.059428

School Bus 20086 0.02765

School Bus 20087 0.085921

School Bus 20088 0.095068

School Bus 20089 0.006077

School Bus 2008 10 0.037989

School Bus 2008 11 0.031647

School Bus 2008 12 0.042059

School Bus 2008 13 0.067039

School Bus 2008 14 0.033032

School Bus 2008 15 0.065607

School Bus 2008 16 0.016997

School Bus 2008 17 0.014547

School Bus 2008 18 0.017783

School Bus 2008 19 0.012217

School Bus 2008 20 0.012787

School Bus 2008 21 0.009648

School Bus 2008 22 0.010238

School Bus 2008 23 0.010624

School Bus 2008 24 0.010901

School Bus 2008 25 0.007175

School Bus 2008 26 0.006278

School Bus 2008 27 0.005723

School Bus 2008 28 0.00207

School Bus 2008 29 0.00013

School Bus 2008 30 0.030987

Refuse Truck 20080 0.032947

Refuse Truck 20081 0.053251

Refuse Truck 20082 0.053796

Refuse Truck 20083 0.065918

Refuse Truck 20084 0.068904

Refuse Truck 20085 0.058114

Refuse Truck 20086 0.050908

Refuse Truck 20087 0.051593

Refuse Truck 20088 0.057315

Refuse Truck 20089 0.046104

Refuse Truck 2008 10 0.041169

Refuse Truck 2008 11 0.036167

Refuse Truck 2008 12 0.035258

Refuse Truck 2008 13 0.037093
Refuse Truck 2008 14 0.033576

Refuse Truck 2008 15 0.037192

Refuse Truck 2008 16 0.032712

Refuse Truck 2008 17 0.03073

Refuse Truck 2008 18 0.030444

Refuse Truck 2008 19 0.023488

Refuse Truck 2008 20 0.018045

Refuse Truck 2008 21 0.017664

Refuse Truck 2008 22 0.016542

Refuse Truck 2008 23 0.015199

Refuse Truck 2008 24 0.015258

Refuse Truck 2008 25 0.010792

Refuse Truck 2008 26 0.008885

Refuse Truck 2008 27 0.006868

Refuse Truck 2008 28 0.006436

Refuse Truck 2008 29 0.005545

Refuse Truck 2008 30 0.002088

Single Unit Short-haul Truck 2008 0 0.018095

Single Unit Short-haul Truck 2008 1 0.030997

Single Unit Short-haul Truck 2008 2 0.037588

Single Unit Short-haul Truck 2008 3 0.051465

Single Unit Short-haul Truck 2008 4 0.058546

Single Unit Short-haul Truck 2008 5 0.045876

Single Unit Short-haul Truck 2008 6 0.039778

Single Unit Short-haul Truck 2008 7 0.040884

Single Unit Short-haul Truck 2008 8 0.053671

Single Unit Short-haul Truck 2008 9 0.038557

Single Unit Short-haul Truck 2008 10 0.032097

Single Unit Short-haul Truck 2008 11 0.0312

Single Unit Short-haul Truck 2008 12 0.032839

Single Unit Short-haul Truck 2008 13 0.038872

Single Unit Short-haul Truck 2008 14 0.030822

Single Unit Short-haul Truck 2008 15 0.039118

Single Unit Short-haul Truck 2008 16 0.036573

Single Unit Short-haul Truck 2008 17 0.036517

Single Unit Short-haul Truck 2008 18 0.039263

Single Unit Short-haul Truck 2008 19 0.026897

Single Unit Short-haul Truck 2008 20 0.019728

Single Unit Short-haul Truck 2008 21 0.018272

Single Unit Short-haul Truck 2008 22 0.019638

Single Unit Short-haul Truck 2008 23 0.021677
Single Unit Short-haul Truck 2008 24 0.025482

Single Unit Short-haul Truck 2008 25 0.006893

Single Unit Short-haul Truck 2008 26 0.004457

Single Unit Short-haul Truck 2008 27 0.003368

Single Unit Short-haul Truck 2008 28 0.002956

Single Unit Short-haul Truck 2008 29 0.002452

Single Unit Short-haul Truck 2008 30 0.115422

Single Unit Long-haul Truck 2008 0 0.019088

Single Unit Long-haul Truck 2008 1 0.032835

Single Unit Long-haul Truck 2008 2 0.039847

Single Unit Long-haul Truck 2008 3 0.055161

Single Unit Long-haul Truck 2008 4 0.063103

Single Unit Long-haul Truck 2008 5 0.04944

Single Unit Long-haul Truck 2008 6 0.042936

Single Unit Long-haul Truck 2008 7 0.044115

Single Unit Long-haul Truck 2008 8 0.056385

Single Unit Long-haul Truck 2008 9 0.041101

Single Unit Long-haul Truck 2008 10 0.033782

Single Unit Long-haul Truck 2008 11 0.033499

Single Unit Long-haul Truck 2008 12 0.035515

Single Unit Long-haul Truck 2008 13 0.040682

Single Unit Long-haul Truck 2008 14 0.031709

Single Unit Long-haul Truck 2008 15 0.041152

Single Unit Long-haul Truck 2008 16 0.038508

Single Unit Long-haul Truck 2008 17 0.037969

Single Unit Long-haul Truck 2008 18 0.040433

Single Unit Long-haul Truck 2008 19 0.026605

Single Unit Long-haul Truck 2008 20 0.019648

Single Unit Long-haul Truck 2008 21 0.018734

Single Unit Long-haul Truck 2008 22 0.019247

Single Unit Long-haul Truck 2008 23 0.019631

Single Unit Long-haul Truck 2008 24 0.022576

Single Unit Long-haul Truck 2008 25 0.006133

Single Unit Long-haul Truck 2008 26 0.004077

Single Unit Long-haul Truck 2008 27 0.003087

Single Unit Long-haul Truck 2008 28 0.002754

Single Unit Long-haul Truck 2008 29 0.002309

Single Unit Long-haul Truck 2008 30 0.077936

Motor Home 2008 0 0.007855

Motor Home 2008 1 0.014902

Motor Home 2008 2 0.023879
Motor Home 2008 3 0.035604

Motor Home 2008 4 0.043055

Motor Home 2008 5 0.031506

Motor Home 2008 6 0.026888

Motor Home 2008 7 0.028062

Motor Home 2008 8 0.045813

Motor Home 2008 9 0.028942

Motor Home 2008 10 0.023499

Motor Home 2008 11 0.023525

Motor Home 2008 12 0.025735

Motor Home 2008 13 0.035922

Motor Home 2008 14 0.027387

Motor Home 2008 15 0.035761

Motor Home 2008 16 0.034492

Motor Home 2008 17 0.036531

Motor Home 2008 18 0.041537

Motor Home 2008 19 0.02938

Motor Home 2008 20 0.020818

Motor Home 2008 21 0.017604

Motor Home 2008 22 0.022169

Motor Home 2008 23 0.029632

Motor Home 2008 24 0.037335

Motor Home 2008 25 0.006401

Motor Home 2008 26 0.002856

Motor Home 2008 27 0.002071

Motor Home 2008 28 0.001498

Motor Home 2008 29 0.001079

Motor Home 2008 30 0.258261

Combination Short-haul Truck 2008 0 0.034447

Combination Short-haul Truck 2008 1 0.055321

Combination Short-haul Truck 2008 2 0.054839

Combination Short-haul Truck 2008 3 0.066003

Combination Short-haul Truck 2008 4 0.068005

Combination Short-haul Truck 2008 5 0.057968

Combination Short-haul Truck 2008 6 0.050816

Combination Short-haul Truck 2008 7 0.05141

Combination Short-haul Truck 2008 8 0.056442

Combination Short-haul Truck 2008 9 0.04584

Combination Short-haul Truck 2008 10 0.041549

Combination Short-haul Truck 2008 11 0.03568

Combination Short-haul Truck 2008 12 0.034238
Combination Short-haul Truck 2008 13 0.035945

Combination Short-haul Truck 2008 14 0.033507

Combination Short-haul Truck 2008 15 0.035914

Combination Short-haul Truck 2008 16 0.03122

Combination Short-haul Truck 2008 17 0.029221

Combination Short-haul Truck 2008 18 0.028669

Combination Short-haul Truck 2008 19 0.023178

Combination Short-haul Truck 2008 20 0.017858

Combination Short-haul Truck 2008 21 0.017349

Combination Short-haul Truck 2008 22 0.016322

Combination Short-haul Truck 2008 23 0.015356

Combination Short-haul Truck 2008 24 0.015343

Combination Short-haul Truck 2008 25 0.011703

Combination Short-haul Truck 2008 26 0.009676

Combination Short-haul Truck 2008 27 0.00748

Combination Short-haul Truck 2008 28 0.007006

Combination Short-haul Truck 2008 29 0.006033

Combination Short-haul Truck 2008 30 0.005661

Combination Long-haul Truck 2008 0 0.037494

Combination Long-haul Truck 2008 1 0.059672

Combination Long-haul Truck 2008 2 0.05745

Combination Long-haul Truck 2008 3 0.067314

Combination Long-haul Truck 2008 4 0.067788

Combination Long-haul Truck 2008 5 0.058815

Combination Long-haul Truck 2008 6 0.051635

Combination Long-haul Truck 2008 7 0.052084

Combination Long-haul Truck 2008 8 0.055695

Combination Long-haul Truck 2008 9 0.046153

Combination Long-haul Truck 2008 10 0.042764

Combination Long-haul Truck 2008 11 0.035508

Combination Long-haul Truck 2008 12 0.033212

Combination Long-haul Truck 2008 13 0.034413

Combination Long-haul Truck 2008 14 0.033654

Combination Long-haul Truck 2008 15 0.034213

Combination Long-haul Truck 2008 16 0.029101

Combination Long-haul Truck 2008 17 0.02692

Combination Long-haul Truck 2008 18 0.025794

Combination Long-haul Truck 2008 19 0.02252

Combination Long-haul Truck 2008 20 0.017492

Combination Long-haul Truck 2008 21 0.016919

Combination Long-haul Truck 2008 22 0.015798
Combination Long

-haul Truck 2008 23 0.015004

Combination Long-haul Truck 2008 24 0.014591

Combination Long-haul Truck 2008 25 0.013126

Combination Long-haul Truck 2008 26 0.010998

Combination Long-haul Truck 2008 27 0.00851

Combination Long-haul Truck 2008 28 0.007982

Combination Long-haul Truck 2008 29 0.006879

Combination Long-haul Truck 2008 30 0.000502