U.S. Department 

of Transportation 

Research and 

Innovative Technology 

Administration 

Volpe National Transportation Systems Center 

Submission to Docket No. NHTSA-201O-0131 

From: Kevin Green 4J . q') 

Chief, CAFE Program Office ~..kj1.--

Thru: Monica E. Conyngha'm111~ Chief Counsel 

Date: August 2,2012 

55 Broadway 

Cambridge, MA 02142 

Please find attached a series of tables and charts summarizing the results of statistical analyses 

estimating the relationships between vehicle fuels consumption and size for inclusion in the 

above-referenced docket. The Volpe National Transportation Systems Center conducted these 

analyses in 2012 at the request of the National Highway Traffic Safety Administration to support 

the evaluation of potential corporate average fuel economy (CAFE) and greenhouse gas (GHG) 

emissions standards applicable to passenger cars and light trucks produced for sale in the U.S. 

after model year 2016. Results show linear relationships fitted using a range of techniques for 

adjusting fuel consumption values and weighting differences between observed (after any 

adjustments) and estimated fuel consumption. 

Please note that these analyses were conducted using market forecasts based on vehicles 

produced for sale in the U.S. in the 2008 and 2010 model years, respectively. Fuel co-n-s-u-m-p---'-tion 

is reported in gallons per mile (gpm) and size is reported as vehicle "footprint" in square feet. 
Appendix: Final Rule Regress

Results

Tables and Graphics Depicting

Analysis using

2008 and 2010 Market Forecasts

8/2/2012 U.S. DOT Volpe Center 
Regression Results

The following following tables and graphs display display re

re

for all of the regressions employed in the

analysis analysis. These include include results results not used t

develop the curves, which are presented 

completeness.8/2/2012 U.S. DOT Volpe Center 
Regression descriptors

Notation Description

ols or mad Ordinary least squares or mean absolute deviation

PC or LT Passenger car or light truck

hp_wt_adj Adjustment for horsepower to weightwt_f dj t_a Adjustment for wei hg t to F i ootpr nt (Square F ) eetwt_ft_hp_wt_adj Adjustment for both horsepower to weight and weight to Footprint

(Square Feet)

init or final Vehicles with no technology (initial) or with technology added (final)u or w Unweighted or weighted by sales

8/2/2012 U.S. DOT Volpe Center 
MY2008‐BASED MARKET FOREC

The following tables and charts reflect theMY2008 BASED MARKET FOREC

8/2/2012 U.S. DOT Volpe Center 
OLS Regression Results

2008 Fleet

Regression type coefficient constant

olsPC init w olsPC

__

init

_

w 0 00117478 0.00117478 ‐0 01974 0.01974

olsPC__init_u 0.00108464 ‐0.00983olsPC_hp_wt_adj__init_w 0.00079953 ‐0.00299

olsPC_hp_wt_adj__init_u 0.00089026 ‐0.00425olsPC_wt_ft_hp_wt_adj__init_w 0.00045244 0.012417olsPC_wt_ft_hp_wt_adj__init_u 0.00067315 0.003585olsPC_wt_ft_adj__init_w 0.00082769 ‐0.00434

olsPC_wt_ft_adj__init_u 0.00086753 ‐0.002

olsPC__final_w 0.0005101 ‐0.0045

olsPC__final_u 0.00046357 0.001844olsPC_hp_wt_adj__final_w 0.00029287 0.005201olsPC_hp_wt_adj__final_u 0.00035105 0.005076olsPC_wt_ft_hp_wt_adj__final_w 0.00013112 0.01238olsPC_wt_ft_hp_wt_adj__final_u 0.00024987 0.008728olsPC_wt_ft_adj__final_w 0.00034835 0.002682

ol PC t ft dj fi l lsPC_wt_ft_adj__final_u 0 0003624 0.0003624 0 005496 0.005496olsLT__init_w 0.00048306 0.01825olsLT__init_u 0.00043169 0.024855olsLT_hp_wt_adj__init_w 0.00045272 0.019878olsLT_hp_wt_adj__init_u 0.00040929 0.025795olsLT_wt_ft_hp_wt_adj__init_w 0.00066245 0.008813olsLT_wt_ft_hp_wt_adj__init_u 0.00070791 0.009193olsLT wt ft adj init w olsLT_wt_ft_adj__init_w 0.00069279 0.00069279 0.007185 0.007185olsLT_wt_ft_adj__init_u 0.00073032 0.008253olsLT__final_w 0.00025133 0.010116olsLT__final_u 0.00022909 0.013763olsLT_hp_wt_adj__final_w 0.00023902 0.010777olsLT_hp_wt_adj__final_u 0.00022 0.014144olsLT_wt_ft_hp_wt_adj__final_w 0.00034715 0.005072olsLT_wt_ft_hp_wt_adj__final_u 0.00037397 0.005584olsLT_wt_ft_adj__final_w 0.00035946 0.004411olsLT_wt_ft_adj__final_u 0.00038305 0.005203

8/2/2012 U.S. DOT Volpe Center 
MAD Regression Results

2008 Fleet

Regression Type coefficient constant

madPC init w madPC

_

init

_

w 0 00122022 0.00122022 ‐0 02131 0.02131

madPC_init_u 0.00095855 ‐0.00572madPC_hp_wt_adj_init_w 0.00084028 ‐0.00449

madPC_hp_wt_adj_init_u 0.00084216 ‐0.00256madPC_wt_ft_hp_wt_adj_init_w 0.00040396 0.014604madPC_wt_ft_hp_wt_adj_init_u 0.00061605 0.005864madPC_wt_ft_adj_init_w 0.00080206 ‐0.00319

madPC_wt_ft_adj_init_u 0.00076199 0.001392

madPC_final_w 0.00056031 ‐0.00699madPC_final_u 0.00033395 0.0065madPC_hp_wt_adj_final_w 0.00032298 0.003623madPC_hp_wt_adj_final_u 0.00028091 0.007726madPC_wt_ft_hp_wt_adj_final_w 0.00012532 0.012299madPC_wt_ft_hp_wt_adj_final_u 0.00020205 0.010432madPC_wt_ft_adj_final_w 0.00031689 0.003752madPC t ft dj fi l dPC_wt_ft_adj_final_u 0 00025722 0.00025722 0 009175 0.009175madLT_init_w 0.00045197 0.019843madLT_init_u 0.00034949 0.029135madLT_hp_wt_adj_init_w 0.00043667 0.021079madLT_hp_wt_adj_init_u 0.0003188 0.030296madLT_wt_ft_hp_wt_adj_init_w 0.00066743 0.008754madLT_wt_ft_hp_wt_adj_init_u 0.00065552 0.011852madLT wt ft adj init w madLT_wt_ft_adj_init_w 0.00067183 0.00067183 0.00859 0.00859madLT_wt_ft_adj_init_u 0.00067562 0.010725madLT_final_w 0.00024535 0.010603madLT_final_u 0.0002101 0.014381madLT_hp_wt_adj_final_w 0.00023411 0.011163madLT_hp_wt_adj_final_u 0.00019092 0.015373madLT_wt_ft_hp_wt_adj_final_w 0.00032725 0.006337madLT_wt_ft_hp_wt_adj_final_u 0.00035317 0.006403madLT_wt_ft_adj_final_w 0.00036207 0.004337madLT_wt_ft_adj_final_u 0.00036383 0.005953

8/2/2012 U.S. DOT Volpe Center 
0.06

GPM vs. Footprint (Square Feet) ‐ Cars

0.050.04

t) Adjusted GPM

0.03

otprint (Square Feet

0.02

Weight per Foo

0.01

0

30 35 40 45 50 55 60 65 70 

Footprint (Square Feet)

8/2/2012 U.S. DOT Volpe Center 
0.06

GPM vs. Footprint (Square Feet) ‐ Trucks

0.050.04

t) Adjusted GPM

0.03

otprint (Square Feet

0.02

Weight per Foo

0.01

0

30 35 40 45 50 55 60 65 70 

Footprint (Square Feet)

8/2/2012 U.S. DOT Volpe Center 
0.09

0.1

Possible Truck Curves Possible Car Cu

0 060.070.08

ns per Mile)

0.040.050.06

onsumption (Gallon

0.010.020.03

FuelCo

0

25 35 45 55 65 75 85

Footprint (Square Feet)

olsLT init w olsLT init u

25 35 45 55 

Footprint (Square Fe

__ _ __ _

olsPC__init_w o

olsLT_hp_wt_adj__init_w olsLT_hp_wt_adj__init_uolsLT_wt_ft_hp_wt_adj__init_w olsLT_wt_ft_hp_wt_adj__init_uolsLT_wt_ft_adj__init_w olsLT_wt_ft_adj__init_uolsLT__final_w olsLT__final_uolsLT_hp_wt_adj__final_w olsLT_hp_wt_adj__final_uolsLT_wt_ft_hp_wt_adj__final_w olsLT_wt_ft_hp_wt_adj__final_uolsLT wt ft adj final w olsLT wt ft adj final u

olsPC_hp_wt_adj__init_w oolsPC_wt_ft_hp_wt_adj__init_w oolsPC_wt_ft_adj__init_w oolsPC__final_w oolsPC_hp_wt_adj__final_w oolsPC_wt_ft_hp_wt_adj__final_w oolsPC_wt_ft_adj__final_w o

dPC i it 

olsLT_wt_ft_adj__final_w olsLT_wt_ft_adj__final_u madLT_init_w madLT_init_umadLT_hp_wt_adj_init_w madLT_hp_wt_adj_init_umadLT_wt_ft_hp_wt_adj_init_w madLT_wt_ft_hp_wt_adj_init_umadLT_wt_ft_adj_init_w madLT_wt_ft_adj_init_umadLT_final_w madLT_final_umadLT_hp_wt_adj_final_w madLT_hp_wt_adj_final_u

madPC

_

init_w m

madPC_hp_wt_adj_init_w mmadPC_wt_ft_hp_wt_adj_init_w mmadPC_wt_ft_adj_init_w mmadPC_final_w mmadPC_hp_wt_adj_final_w mmadPC_wt_ft_hp_wt_adj_final_w m

8/2/2012 U.S. DOT Volpe Center 
0 09

0.1

No Technology Car Curves Technology Car C

0.070.080.09

e)

0.050.06

on (Gallons per Mil

0.030.04

Fuel Consumptio

0.010.02

0

25 35 45 55 65 75 85

Footprint (Square Feet)

olsPC__init_w olsPC__init_u

25 35 45 55 

Footprint (Squa

olsPC__final_w ols

olsPC_hp_wt_adj__init_w olsPC_hp_wt_adj__init_uolsPC_wt_ft_hp_wt_adj__init_w olsPC_wt_ft_hp_wt_adj__init_uolsPC_wt_ft_adj__init_w olsPC_wt_ft_adj__init_uNo Technology Fleet Technology Fleet

olsPC_hp_wt_adj__final_w olsolsPC_wt_ft_hp_wt_adj__final_w olsolsPC_wt_ft_adj__final_w olsNo Technology Fleet Tec

8/2/2012 U.S. DOT Volpe Center 
0 09

0.1

No Technology Car Curves Technology Car C

0.070.080.09

e)

0.050.06

on (Gallons per Mil

0.030.04

Fuel Consumptio

0.010.02

0

25 35 45 55 65 75 85

Footprint (Square Feet)

madPC_init_w madPC_init_u

25 35 45 55 

Footprint (Squar

madPC_final_w m

madPC_hp_wt_adj_init_w madPC_hp_wt_adj_init_umadPC_wt_ft_hp_wt_adj_init_w madPC_wt_ft_hp_wt_adj_init_umadPC_wt_ft_adj_init_w madPC_wt_ft_adj_init_uNo Technology Fleet Technology Fleet

madPC_hp_wt_adj_final_w mmadPC_wt_ft_hp_wt_adj_final_w mmadPC_wt_ft_adj_final_w mNo Technology Fleet T

8/2/2012 U.S. DOT Volpe Center 
0 09

0.1

No Technology Truck Curves Technology Truck 

0.07

0.08

0.09

e)

0.050.060 0

on (Gallons per Mile

0.030.04

Fuel Consumptio

0.010.02

0

25 35 45 55 65 75 85

Footprint (Square Feet)

olsLT__init_w olsLT__init_u

25 35 45 55 

Footprint (Squar

olsLT__final_w ols

olsLT_hp_wt_adj__init_w olsLT_hp_wt_adj__init_uolsLT_wt_ft_hp_wt_adj__init_w olsLT_wt_ft_hp_wt_adj__init_uolsLT_wt_ft_adj__init_w olsLT_wt_ft_adj__init_uNo Technology Fleet Technology Fleet

olsLT_hp_wt_adj__final_w olsolsLT_wt_ft_hp_wt_adj__final_w olsolsLT_wt_ft_adj__final_w olsNo Technology Fleet Tec

8/2/2012 U.S. DOT Volpe Center 
0.09

0.1

No Technology Truck Curves Technology Truck 

0.070.080.09

le)

0.050.06

on (Gallons per Mil

0.030.04

Fuel Consumptio

0.010.02

0

25 35 45 55 65 75 85

Footprint (Square Feet)

madLT_init_w madLT_init_u

25 35 45 55 

Footprint (Squar

madLT_final_w ma

madLT_hp_wt_adj_init_w madLT_hp_wt_adj_init_umadLT_wt_ft_hp_wt_adj_init_w madLT_wt_ft_hp_wt_adj_init_umadLT_wt_ft_adj_init_w madLT_wt_ft_adj_init_uNo Technology Fleet Technology Fleet

madLT_hp_wt_adj_final_w mamadLT_wt_ft_hp_wt_adj_final_w mamadLT_wt_ft_adj_final_w maNo Technology Fleet Tec

8/2/2012 U.S. DOT Volpe Center 
0 09

0.1

Car Curves Truck Curve

0.070.080.09

e)

0.050.06

on (Gallons per Mil

0.030.04

Fuel Consumptio

0.010.02

0

25 35 45 55 65 75 85

Footprint (Square Feet)

25 35 45 55 

Footprint (Squa

olsPC__init_w olsPC__init_u olsPC__final_wolsPC__final_u No Technology Fleet Technology Fleet

olsLT__init_w olsLT__init_u olsLT__final_u No Technology F

8/2/2012 U.S. DOT Volpe Center 
0 09

0.1

Car Curves Truck Curve

0.070.080.09

e)

0.050.06

on (Gallons per Mil

0.030.04

Fuel Consumptio

0.010.02

0

25 35 45 55 65 75 85

Footprint (Square Feet)

25 35 45 55 

Footprint (Squar

olsPC_wt_ft_adj__init_w olsPC_wt_ft_adj__init_uolsPC_wt_ft_adj__final_w olsPC_wt_ft_adj__final_uNo Technology Fleet Technology Fleet

olsLT_wt_ft_adj__init_w olsLolsLT_wt_ft_adj__final_w olsLNo Technology Fleet Tec

8/2/2012 U.S. DOT Volpe Center 
0 09

0.1

Car Curves Truck Curve

0.070.080.09

e)

0.050.06

on (Gallons per Mil

0.030.04

Fuel Consumptio

0.010.02

0

25 35 45 55 65 75 85

Footprint (Square Feet)

25 35 45 55 

Footprint (Squar

olsPC_wt_ft_hp_wt_adj__init_w olsPC_wt_ft_hp_wt_adj__init_uolsPC_wt_ft_hp_wt_adj__final_w olsPC_wt_ft_hp_wt_adj__final_uNo Technology Fleet Technology Fleet

olsLT_wt_ft_hp_wt_adj__init_w olsolsLT_wt_ft_hp_wt_adj__final_w olsNo Technology Fleet Tec

8/2/2012 U.S. DOT Volpe Center 
2010‐BASED MARKET FORECAS

The following tables and charts reflect the2010 BASED MARKET FORECAS

8/2/2012 U.S. DOT Volpe Center 
OLS Regression Results

2010 Fleet

Regression type coefficient constantolsPC__init_w 0.00109554 ‐0.01806

olsPC__init_u 0.00109885 ‐0.01259olsPC_hp_wt_adj__init_w 0.00073731 ‐0.00176

olsPC_hp_wt_adj__init_u 0.00093311 ‐0.00785olsPC_wt_ft_hp_wt_adj__init_w 0.00040328 0.013362olsPC_wt_ft_hp_wt_adj__init_u 0.00065362 0.003194olsPC_wt_ft_adj__init_w 0.00076152 ‐0.00294

olsPC_wt_ft_adj__init_u 0.00081936 ‐0.00155

olsPC final w olsPC

__

final

_

w 0 00047232 0.00047232 ‐0 00376 0.00376

olsPC__final_u 0.00050154 ‐0.00076olsPC_hp_wt_adj__final_w 0.00024844 0.006427olsPC_hp_wt_adj__final_u 0.00039796 0.002211olsPC_wt_ft_hp_wt_adj__final_w 0.00009254 0.013485olsPC_wt_ft_hp_wt_adj__final_u 0.00026752 0.007364olsPC_wt_ft_adj__final_w 0.00031642 0.003299olsPC_wt_ft_adj__final_u 0.0003711 0.004396olsLT__init_w 0.00046997 0.017558olsLT__init_u 0.00042281 0.022829olsLT_hp_wt_adj__init_w 0.00044556 0.018901olsLT_hp_wt_adj__init_u 0.00042557 0.022455olsLT_wt_ft_hp_wt_adj__init_w 0.00062876 0.00903olsLT_wt_ft_hp_wt_adj__init_u 0.00060903 0.011991olsLT_wt_ft_adj__init_w 0.00065317 0.007688ol LT f dj i i lsLT_wt_ft_adj__init_u 0 00060627 0.00060627 0 012366 0.012366olsLT__final_w 0.00025558 0.009763olsLT__final_u 0.00019844 0.014767olsLT_hp_wt_adj__final_w 0.00023716 0.010776olsLT_hp_wt_adj__final_u 0.00020052 0.014484olsLT_wt_ft_hp_wt_adj__final_w 0.00033953 0.00526olsLT_wt_ft_hp_wt_adj__final_u 0.00030304 0.008637olsLT wt ft adj final w olsLT_wt_ft_adj__final_w 0 00035795 0.00035795 0 004247 0.004247olsLT_wt_ft_adj__final_u 0.00030096 0.00892

8/2/2012 U.S. DOT Volpe Center 
MAD Regression Results

2010 Fleet

Regression Type coefficient constant

madPC init w madPC

_

init

_

w 0 00105773 0.00105773 ‐0 0167 .

madPC_init_u 0.00099478 ‐0.00944madPC_hp_wt_adj_init_w 0.00071499 ‐0.00128

madPC_hp_wt_adj_init_u 0.00082817 ‐0.0037

madPC_wt_ft_hp_wt_adj_init_w 0.00029643 0.017808madPC_wt_ft_hp_wt_adj_init_u 0.00054603 0.007831madPC_wt_ft_adj_init_w 0.0006797 0.000737madPC_wt_ft_adj_init_u 0.00073134 0.001262

madPC_final_w 0.00042728 ‐0.0021

madPC_final_u 0.00044513 0.000758madPC_hp_wt_adj_final_w 0.00025763 0.005427madPC_hp_wt_adj_final_u 0.0003184 0.005349madPC_wt_ft_hp_wt_adj_final_w 0.00009879 0.012761madPC_wt_ft_hp_wt_adj_final_u 0.00018934 0.010594madPC_wt_ft_adj_final_w 0.00026139 0.005475

madPC t ft dj fi l dPC_wt_ft_adj_final_u 0 00030603 0.00030603 0 006359 0.006359madLT_init_w 0.00048116 0.016541madLT_init_u 0.00044042 0.021393madLT_hp_wt_adj_init_w 0.00047038 0.016725madLT_hp_wt_adj_init_u 0.00040605 0.023073madLT_wt_ft_hp_wt_adj_init_w 0.00071035 0.004228madLT_wt_ft_hp_wt_adj_init_u 0.00062828 0.011148madLT wt ft adj init w madLT_wt_ft_adj_init_w 0.00067761 0.00067761 0.005964 0.005964madLT_wt_ft_adj_init_u 0.00067073 0.009387madLT_final_w 0.00027822 0.008318madLT_final_u 0.00023096 0.012476madLT_hp_wt_adj_final_w 0.00027966 0.008331madLT_hp_wt_adj_final_u 0.00019562 0.014362madLT_wt_ft_hp_wt_adj_final_w 0.00038587 0.002701madLT_wt_ft_hp_wt_adj_final_u 0.00033051 0.007064madLT_wt_ft_adj_final_w 0.00036536 0.00389madLT_wt_ft_adj_final_u 0.00033557 0.006778

8/2/2012 U.S. DOT Volpe Center 
0.06

GPM vs. Footprint (Square Feet) ‐ Cars

0.050.04

t) Adjusted GPM

0.03

otprint (Square Feet

0.02

Weight per Foo

0.01

0

30 35 40 45 50 55 60 65 70 

Footprint (Square Feet)

8/2/2012 U.S. DOT Volpe Center 
0.04

GPM vs. Footprint (Square Feet) ‐ Trucks

0.0350.025

0.03

t) Adjusted GPM

0.02

otprint (Square Feet

0.01

0.015

Weight per Foo

0.005

0

30 35 40 45 50 55 60 65 70 

Footprint (Square Feet)

8/2/2012 U.S. DOT Volpe Center 
0.09

0.1

Possible Truck Curves Possible Car Cu

0 060.070.08

ns per Mile)

0.040.050.06

onsumption (Gallon

0.010.020.03

FuelCo

0

25 35 45 55 65 75 85

Footprint (Square Feet)

olsLT init w olsLT init u

25 35 45 55 

Footprint (Square Fe

__ _ __ _

olsPC__init_w o

olsLT_hp_wt_adj__init_w olsLT_hp_wt_adj__init_uolsLT_wt_ft_hp_wt_adj__init_w olsLT_wt_ft_hp_wt_adj__init_uolsLT_wt_ft_adj__init_w olsLT_wt_ft_adj__init_uolsLT__final_w olsLT__final_uolsLT_hp_wt_adj__final_w olsLT_hp_wt_adj__final_uolsLT_wt_ft_hp_wt_adj__final_w olsLT_wt_ft_hp_wt_adj__final_uolsLT wt ft adj final w olsLT wt ft adj final u

olsPC_hp_wt_adj__init_w oolsPC_wt_ft_hp_wt_adj__init_w oolsPC_wt_ft_adj__init_w oolsPC__final_w oolsPC_hp_wt_adj__final_w oolsPC_wt_ft_hp_wt_adj__final_w oolsPC_wt_ft_adj__final_w o

dPC i i 

olsLT_wt_ft_adj__final_w olsLT_wt_ft_adj__final_u madLT_init_w madLT_init_umadLT_hp_wt_adj_init_w madLT_hp_wt_adj_init_umadLT_wt_ft_hp_wt_adj_init_w madLT_wt_ft_hp_wt_adj_init_umadLT_wt_ft_adj_init_w madLT_wt_ft_adj_init_umadLT_final_w madLT_final_umadLT_hp_wt_adj_final_w madLT_hp_wt_adj_final_u

madPC

_

init_w m

madPC_hp_wt_adj_init_w mmadPC_wt_ft_hp_wt_adj_init_w mmadPC_wt_ft_adj_init_w mmadPC_final_w mmadPC_hp_wt_adj_final_w mmadPC_wt_ft_hp_wt_adj_final_w m

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No Technology Car Curves Technology Car C

0.070.080.09

e)

0.050.06

on (Gallons per Mile

0.030.04

Fuel Consumptio

0.010.02

0

25 35 45 55 65 75 85

Footprint (Square Feet)

olsPC__init_w olsPC__init_u

25 35 45 55 

Footprint (Squa

olsPC__final_w ols

olsPC_hp_wt_adj__init_w olsPC_hp_wt_adj__init_uolsPC_wt_ft_hp_wt_adj__init_w olsPC_wt_ft_hp_wt_adj__init_uolsPC_wt_ft_adj__init_w olsPC_wt_ft_adj__init_uNo Technology Fleet Technology Fleet

olsPC_hp_wt_adj__final_w olsolsPC_wt_ft_hp_wt_adj__final_w olsolsPC_wt_ft_adj__final_w olsNo Technology Fleet Tec

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No Technology Car Curves Technology Car C

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e)

0.050.06

on (Gallons per Mil

0.030.04

Fuel Consumptio

0.010.02

0

25 35 45 55 65 75 85

Footprint (Square Feet)

madPC_init_w madPC_init_u

25 35 45 55 

Footprint (Squa

madPC_final_w 

madPC_hp_wt_adj_init_w madPC_hp_wt_adj_init_umadPC_wt_ft_hp_wt_adj_init_w madPC_wt_ft_hp_wt_adj_init_umadPC_wt_ft_adj_init_w madPC_wt_ft_adj_init_uNo Technology Fleet Technology Fleet

madPC_hp_wt_adj_final_w madPC_wt_ft_hp_wt_adj_final_w madPC_wt_ft_adj_final_w No Technology Fleet 

8/2/2012 U.S. DOT Volpe Center 
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No Technology Truck Curves Technology Truck 

0.070.080.09

e)

0.050.06

on (Gallons per Mil

0.030.04

Fuel Consumptio

0.010.02

0

25 35 45 55 65 75 85

Footprint (Square Feet)

olsLT__init_w olsLT__init_u

25 35 45 55 

Footprint (Squar

olsLT__final_w olsL

olsLT_hp_wt_adj__init_w olsLT_hp_wt_adj__init_uolsLT_wt_ft_hp_wt_adj__init_w olsLT_wt_ft_hp_wt_adj__init_uolsLT_wt_ft_adj__init_w olsLT_wt_ft_adj__init_uNo Technology Fleet Technology Fleet

olsLT_hp_wt_adj__final_w olsLolsLT_wt_ft_hp_wt_adj__final_w olsLolsLT_wt_ft_adj__final_w olsLNo Technology Fleet Tec

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0 09

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No Technology Truck Curves Technology Truck 

0.070.080.09

e)

0.050.06

on (Gallons per Mil

0.030.04

Fuel Consumptio

0.010.02

0

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Footprint (Square Feet)

madLT_init_w madLT_init_u

25 35 45 55 

Footprint (Squar

madLT_final_w ma

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madLT_hp_wt_adj_final_w mamadLT_wt_ft_hp_wt_adj_final_w mamadLT_wt_ft_adj_final_w maNo Technology Fleet Tec

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0.1

Car Curves Truck Curve

0.070.080.09

e)

0.050.06

on (Gallons per Mil

0.030.04

Fuel Consumptio

0.010.02

0

25 35 45 55 65 75 85

Footprint (Square Feet)

25 35 45 55 

Footprint (Squar

olsPC__init_w olsPC__init_u olsPC__final_wolsPC__final_u No Technology Fleet Technology Fleet

olsLT__init_w olsLT__init_u olsLT__final_u No Technology F

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0.1

Car Curves Truck Curve

0.070.080.09

e)

0.050.06

on (Gallons per Mil

0.030.04

Fuel Consumptio

0.010.02

0

25 35 45 55 65 75 85

Footprint (Square Feet)

25 35 45 55 

Footprint (Squa

olsPC_wt_ft_adj__init_w olsPC_wt_ft_adj__init_uolsPC_wt_ft_adj__final_w olsPC_wt_ft_adj__final_uNo Technology Fleet Technology Fleet

olsLT_wt_ft_adj__init_w olsolsLT_wt_ft_adj__final_w olsNo Technology Fleet Te

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0.1

Car Curves Truck Curve

0.070.080.09

e)

0.050.06

on (Gallons per Mil

0.030.04

Fuel Consumptio

0.010.02

0

25 35 45 55 65 75 85

Footprint (Square Feet)

25 35 45 55 

Footprint (Squa

olsPC_wt_ft_hp_wt_adj__init_w olsPC_wt_ft_hp_wt_adj__init_uolsPC_wt_ft_hp_wt_adj__final_w olsPC_wt_ft_hp_wt_adj__final_uNo Technology Fleet Technology Fleet

olsLT_wt_ft_hp_wt_adj__init_w olsolsLT_wt_ft_hp_wt_adj__final_w olsNo Technology Fleet Tec

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Stata Results – all runs

2008 Fleet

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2010 Fleet

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