Analysis of the Effects of Eliminating the National Speed Limit on NOx Emissions Print E-mail
This report was prepared by E. H. Pechan and Associates for the
U.S. Environmental Protection Agency, Office of Policy, Planning,
and Evaluation.  For further information, please contact Bob Noland
at 202-260-2418.


      Analysis of the Effects of Eliminating the National
               Speed Limit o­n NOx Emissions


Introduction

 Highway vehicles contribute approximately o­ne third of the oxides of
nitrogen (NOx) emissions released to the atmosphere in the United States
annually (EPA, 1994).  Since highway vehicles contribute such a large
percentage of NOx emissions, proposed modifications in the National
Highway System bill are examined in this analysis to determine their
effect o­n this important source category.  Specifically, the U.S. Senate
has recently proposed to abolish the national maximum speed limit.  Such
a policy modification may have a significant impact o­n the magnitude of
NOx emissions from motor vehicles.  Motor vehicle NOx emissions result
from combustion processes and tend to increase with increasing speeds
above 48 miles per hour (mph) (Pechan, 1992).  This analysis examines
the potential consequences of the proposed Senate changes to the
National Highway System bill o­n highway vehicle NOx emission levels. The
Senate recently voted to repeal the national maximum speed limit o­n
federally financed highways.  The national maximum speed limit rule
currently restricts vehicle speed limits to 65 mph o­n rural freeways,
and 55 mph for all other corridors. The Senate proposal to repeal the
national speed limit passed o­n June 19, 1995 with the stipulation that
federal speed limits still apply to commercial vehicles such as trucks
and buses.   If the bill passes through the House of Representatives,
States would have the authority to determine the maximum allowable speed
limits for automobiles within their State boundaries.  Trucks and buses
would still be subject to the 55 mph urban and 65 mph rural limits. The
national maximum speed limit was established in 1974; it restricted
speed limits to 55 mph.  The impetus for this regulation was to conserve
fuel during the 1973 oil embargo and subsequent energy crisis.  Prior to
the national limit, States determined speed limits for all corridors
within their jurisdictions.  Table 1 presents the speed limits
maintained by States in January 1973, prior to implementation of the
national maximum speed limit. Also presented in Table 1 are current
speed limits for automobiles and trucks, by State. In 1987, the maximum
speed limit o­n rural freeways was increased to 65 mph.  Rural freeways
are defined as freeways located in designated "rural" areas,
with a population less than 50,000.  Freeways are "controlled
access facilities" which means that access is by ramp o­nly and
freeways are divided highways which usually consist of four lanes.  The
likely effect of the recent Senate proposal abolishing the national
speed limit will be increases in rural freeway speed limits for
automobiles.  Since most States adhered to the 55 mph speed limit in
urban areas before the national maximum speed limit was established,
changes in speed limits around metropolitan areas are expected to be
minimal (FHWA, 1995).  As shown in Table 1, speed limits o­n rural
freeways before the national maximum limit of 65 mph did not exceed 75
mph, with the exception of Montana and Nevada -- which did not establish
maximum limits.  Most maximum speed limits for rural corridors ranged
between 65 and 75 mph with the majority of States setting rural speed
limits of 70 mph.

 This analysis assumes that States are most likely to raise the maximum
speed limits o­n their rural freeways to limits established prior to the
national maximum speed limit and retain the 55 mph limit in urban areas.
Current Effects of Speeds Limits

 Before estimating the likely effects that abolishing the national speed
limit will have o­n interstate speeds, it is helpful to examine the
effectiveness of the 55 mph speed limit.  Based o­n data from the Federal
Highway Administration (FHWA) published in the 1993 Highway Statistics
report that analyzes trends in speeds o­n highways signed for 55 mph, a
majority of vehicles exceed this posted limit (FHWA, 1994).

 In 1993, 70 percent of drivers exceeded 55 mph o­n urban interstate
highways and 78 percent exceeded the speed limit o­n rural interstate
highways.  o­nly highways with a posted 55 mph speed limit are included
in this average.  The average speed recorded o­n the urban interstate
highways was 59 mph and approximately 61 mph o­n rural interstate
highways.  In addition, 18 percent of drivers o­n urban interstates and
24 percent of drivers o­n rural interstates were already exceeding 65 mph
on 55 mph roads. Prior to the setting of the national speed limit, FHWA
reports that the average speed of free-moving traffic o­n level,
straight, uncongested sections of the rural interstate system reached a
peak of approximately 65 mph in 1973.  This compares to a current
average speed o­n rural interstates posted with 55 mph limits of 61 mph.  
It is important to consider that the average speed in 1973 was
calculated at ideal conditions whereas the current average speed
includes all vehicle travel o­n the rural interstate system, not just the
straight, uncongested portions analyzed for the 1973 data.

Analysis Methods

 This analysis was performed within the constraints of the MOBILE5a
model.  Therefore, the maximum speed that could be examined was 65 mph.  
Two cases were compared with the 1994 highway vehicle NOx emission
inventory prepared for EPA's Emission Trends report--a maximum effects
case and a likely effects case.

  In the base case analysis, the speeds modeled for each road type and
vehicle type were determined using data from FHWA's 1987 through 1990
HPMS impact analyses.  Speeds varied less than 1 mph over this time
period for any given vehicle type/road type combination.  Therefore, the
1990 data were used and aggregated to determine average speeds for three
vehicle classifications (light duty vehicles, light duty trucks, and
heavy duty vehicles).

 Table 2 presents the national distribution of VMT by vehicle class and
road type.  Table 3 summarizes the speeds modeled in the four road
classes of interest (rural interstates, rural principal arterials, urban
interstates, and urban other freeways and expressways) in this analysis.  
Emissions were estimated at the county, monthly, road type level.  As
seen in Table 2, these four road types account for 39 percent of the
total VMT. To get an estimate of the maximum effects of abolishing the
national speed limit, speeds for all vehicle types o­n all of the road
types listed in Table 3 were modeled at a speed of 65 mph.  This assumes
that urban speed limits would be increased as well as the rural speeds
and that heavy duty vehicles would also be able to increase to 65 mph.  
Due to factors such as congestion from heavy peak hour volumes, it is
unlikely that urban speeds would ever reach an average of 65 mph even if
the speed limits o­n these roads were increased.  However, modeling this
case gives an estimate of the upper bounds of possible emission
increases.  Other than the change in speeds for these four road types,
all other modeling was done identically to the base case. A more
realistic case was also examined.  In this case, the base case speeds
were modeled for the heavy duty vehicles.

 This corresponds with the version of the bill that has passed the
Senate, in which these vehicle classes would be subject to the current
limits of 55 mph or 65 mph.  In addition, it was assumed that urban
speeds for all vehicle types would remain unchanged from the base case,
reflecting the reality of the lower average speeds observed o­n urban
interstates.  Finally, the nine States shown in Table 1 to have maximum
limits of 65 or lower prior to the setting of the national speed limit
were modeled at the same speeds used in the base case.  As seen in Table
2, light-duty VMT o­n rural roads accounts for o­nly 18 percent of the
total 1994 VMT.  With nine States modeled at base case speeds, the
percentage of VMT modeled in this case at 65 mph would be even less than
18 percent.  Again, all inputs other than speed used in the base case
were modeled in this case as well.

Results

 Tables 4, 5, and 6 present the NOx emissions calculated for the base
case, the maximum effects case, and the likely effects case,
respectively.  These results are presented at the State level, and with
emissions from heavy duty vehicles separated from emissions from light
duty vehicles.  In this manner, results from the three cases can easily
be combined in other configurations if changes occur in the present
status of disallowing heavy duty vehicles from the higher speeds, or if
urban speeds in certain States are likely to approach the higher rural
speeds. Table 7 compares the results from the likely case with the base
case results.

 As seen in this table, NOx emissions are projected to increase by 5.2
percent with the elimination of the national speed limit.

 States such as Montana, North Dakota, and South Dakota that have high
rural interstate VMT relative to urban VMT show the greatest increases
in NOx.  In contrast, States like New Jersey, California, and Illinois
that have high urban VMT relative to rural VMT show relatively small
emission increases resulting from the change in speeds.

Related Issues

 This analysis was completed using MOBILE5a.

 The MOBILE model is designed to model vehicle speeds up to 65 mph.  
Therefore, it was not possible to use to the MOBILE model to estimate
emissions resulting from vehicle speeds in the 70 to 75 mph range.
Forty-two States posted speed limits above 70 mph prior to the maximum
national speed limit set in 1974.  It is, therefore, realistic that the
majority of States will post speed limits in this range again.   A rough
estimate using the State of Texas as a sample indicates an increase in
NOx emissions of an additional 11 percent  for light duty vehicles o­n
rural corridors if emissions are modelled using an emission factor
reflecting emission rates applicable to vehicles travelling at 70 mph.  
This example was calculated assuming a linear increase in the emission
factor with speed after 48 mph.   This example illustrates that the
effects of repealing the maximum national speed limit o­n NOx emissions
may be more dramatic than the results in this analysis -- using MOBILE5a
-- imply.   Although this analysis examines the potential increase in
highway vehicle NOx emissions as a result of increased automobile speeds
on rural highways, carbon monoxide (CO) emissions are likely to increase
as well.

 Both CO and NOx emissions result from combustion processes. At lower
speeds, around 15 mph, motor vehicle emissions of CO and NOx decrease
with increases in vehicle speed as a result of more efficient
combustion.  However, after 48 mph, increases in vehicular speeds are
accompanied by increases in emissions of both CO and NOx (Pechan, 1992).  
Thus, increases in highway vehicle CO emissions are also likely as a
result of the proposed changes to the National Highway System bill.  
Using the same reasoning, particulate matter (PM) emissions may also
increase.

Conclusions

 The results of this analysis indicate a 5 percent increase in motor
vehicle NOx emissions annually o­n a national level.  Current controls o­n
NOx emissions are focused in ozone nonattainment areas where NOx and HC
emissions react with sunlight to form tropospheric ozone.  Although NOx
emissions will increase o­n a national level as a result of repealing the
maximum national speed limit o­n rural corridors, the net effect o­n ozone
levels will likely be much less significant.  Ozone nonattainment areas
are predominantly urban areas where automobile speed limit changes are
not as likely to occur.  Despite the effect of transport, the increases
in NOx shown in this analysis o­n a national level may not necessarily
contribute to parallel increases in ozone formation.   In order to more
accurately assess the implications o­n air quality of the proposed Senate
rule, a more thorough analysis should be conducted which analyzes
increases in highway vehicle CO and PM emissions as well.  Moreover,
emission estimates should be determined using an appropriate correction
factor to estimate emissions generated at 70 mph speeds.  The effect of
increased motor vehicle NOx emissions resulting from light duty vehicle
speed increases o­n rural corridors o­n ozone nonattainment areas also
deserves more in depth attention.

References

 EPA, 1994; U.S. Environmental Protection Agency, "National Air
Pollutant Emission Trends, 1900-1993" OAQPS, Research Triangle
Park, North Carolina, October, 1994.

 FHWA, 1994; Federal Highway Association, "Highway Statistics
1993" Washington, DC, 1994.

 FHWA, 1995; Federal Highway Association.  Personal Communication with
Ms. Julie   Cirillo, June, 1995.

 Pechan, 1992; E.H. Pechan & Associates, "Sensitivity Analysis
of MOBILE4.1 Emission  Factors" Prepared for EPA Ozone/Carbon
Monoxide Programs Branch Springfield,  Virginia, July 1992.



                                Table 1
                       Maximum State Speed Limits


State       State Speed Limit         Current               Comments
             Prior to 1974          Speed Limits
               (mph)                   (mph)

                                Automobiles   Trucks

Alabama         70                 65            65
Alaska          70                 65            65
Arizona         75                 65            65
Arkansas        75                 65            65
California      70                 65            55
Colorado        70                 65            65  Trucks lower in mountains
Connecticut     60                 55            55
Delaware        60                 55            55
DC              60                 55            55
Florida         70                 65            65
Georgia         70                 65            65
Hawaii          70                 55            55
Idaho           70                 65            65
Illinois        70                 65            55
Indiana         70                 65            60
Iowa            75                 65            65
Kansas          75                 65            65
Kentucky        70                 65            65
Louisiana       70                 65            65
Maine           70                 65            65
Maryland        70                 55            55  65 mph  o­n July 1, 1995
Massachusetts   65                 65            65  65 mph o­n Mass. Tnpk
                                                     o­nly.  All other
                                                     locations 55 mph
Michigan        70                 65            55
Minnesota       65                 65            65
Mississippi     70                 65            65
Missouri        70                 65            60
Montana         unlimited          65            65
Nebraska        75                 65            65
Nevada          unlimited          65            65
New Hampshire   70                 65            65
New Jersey      70                 55            55
New Mexico      70                 65            65
New York        55                 55            55  65 mph o­n August 1, 1995
                                                     - all vehicles
North Carolina  70                 65            65
North Dakota    75                 65            65
Ohio            70                 65            55
Oklahoma        70                 65            65
Oregon          75                 65            55
Pennsylvania    65                 55            55  65 mph July 13, 1995
Rhode Island    60                 55            55
South Carolina  70                 65            65
South Dakota    75                 65            65
Tennessee       75                 65            65
Texas           70                 65            60  Trucks limited to 60 mph
                                                     daytime and 55 mph
                                                     nighttime
Utah            70                 65            65
Vermont         65                 65            65
Virginia        70                 65            65
Washington      70                 65            60
West Virginia   70                 65            65
Wisconsin       70                 65            65
Wyoming         75                 65            65


Source: Department of Transportation/Federal Highway Association



                                Table 2

                  1994 Vehicle  Miles Travelled (VMT)
                     by Road Type and Vehicle Class



Road                           Total VMT     Percent    Percent   Percent of
Type                                         of Total  of Total   Total VMT
                                               VMT        VMT
                                              (Heavy    (Light
                                              Duty)      Duty)

RURAL

   Interstate                     214,757        1.0       8.1          9.1
   Other Principal Arterial       209,017        1.0       7.9          8.9
   Minor Arterial                 153,503        0.7       5.8          6.5
   Major Collector                183,281        0.9       6.9          7.8
   Minor Collector                 49,932        0.2       1.9          2.1
   Local                          105,430        0.5       4.0          4.5
   Total Rural                    915,919        4.5      34.6         39.0

URBAN

   Interstate                     322,023        0.6      13.1         13.7
   Other Freeways                 144,284        0.3       5.9          6.1
     Expressways
   Other Principal Arterial       360,146        0.7      14.6         15.3
   Minor Arterial                 279,419        0.5      11.4         11.9
   Collector                      122,536        0.2       5.0          5.2
   Local                          202,918        0.4       8.3          8.6
   Total Urban                  1,431,325        2.8      58.2         61.0

TOTAL                           2,347,244        7.2      92.8        100.0
                                                                                 



                                Table 3
          Average Speeds by Road Type and Vehicle Type Modeled
                           for the Base Case



                             Rural                     Urban Other
                     ---------------------       -----------------------
Vehicle Type         Interstate   Principal      Interstate    Freeways
                                   Arterial                   Expressways

Light Duty             60 mph       45 mph         45 mph       45 mph
Vehicles

Light Duty Trucks      55 mph       45 mph         45 mph       45 mph

Heavy Duty             40 mph       35 mph         35 mph       35 mph
Vehicles




                                Table 4

                          1994 Highway Vehicle
                             NOx Emissions

                           with Current Speed
                           Limits (Base Case)



                        1994 Base Case NOx Emissions (tons)

                       Light-Duty     Heavy-Duty         All
State                   Vehicles       Vehicles       Vehicles

Alabama                  108,578         53,320        161,898
Alaska                    10,843          4,500         15,343
Arizona                   78,660         35,363        114,023
Arkansas                  57,374         30,694         88,067
California               500,401        213,317        713,718
Colorado                  75,598         32,384        107,982
Connecticut               64,465         23,245         87,710
Delaware                  15,142          6,902         22,044
District of Columbia       7,737          2,286         10,023
Florida                  252,135        108,530        360,665
Georgia                  179,504         81,615        261,119
Hawaii                    16,470          6,983         23,453
Idaho                     28,555         14,902         43,457
Illinois                 213,507         83,066        296,573
Indiana                  147,618         68,419        216,037
Iowa                      63,270         31,458         94,727
Kansas                    58,571         27,933         86,504
Kentucky                  93,233         45,802        139,035
Louisiana                 76,049         38,144        114,193
Maine                     30,784         16,103         46,887
Maryland                  98,724         38,949        137,673
Massachusetts            108,300         36,795        145,095
Michigan                 206,614         83,471        290,085
Minnesota                105,734         45,987        151,721
Mississippi               62,248         35,023         97,270
Missouri                 131,072         59,523        190,594
Montana                   22,571         11,854         34,425
Nebraska                  36,876         18,277         55,152
Nevada                    25,996         11,843         37,839
New Hampshire             26,392         12,325         38,717
New Jersey               129,949         47,339        177,288
New Mexico                44,555         22,952         67,507
New York                 255,046         98,126        353,172
North Carolina           162,538         78,311        240,850
North Dakota              16,118          8,190         24,308
Ohio                     233,350         97,841        331,190
Oklahoma                  83,252         39,856        123,108
Oregon                    68,076         32,079        100,156
Pennsylvania             211,943         92,727        304,670
Rhode Island              16,431          5,371         21,802
South Carolina            83,695         43,879        127,574
South Dakota              19,791         10,472         30,263
Tennessee                123,994         56,331        180,325
Texas                    379,434        160,823        540,257
Utah                      41,066         16,572         57,637
Vermont                   15,528          7,698         23,227
Virginia                 151,518         70,200        221,718
Washington               111,867         43,970        155,838
West Virginia             40,811         21,793         62,603
Wisconsin                120,804         55,905        176,709
Wyoming                   17,972          9,503         27,475

Total                  5,230,757      2,298,948      7,529,705




                                Table 5

                          1994 Highway Vehicle
                             NOx Emissions

                          with Maximum Effects
                           of New Speed Limit
                               (Max Case)



                         1994 Max Case NOx Emissions (tons)

                       Light-Duty     Heavy-Duty         All
State                   Vehicles       Vehicles       Vehicles

Alabama                  127,531         68,944        196,476
Alaska                    12,626          5,977         18,603
Arizona                   91,844         46,780        138,623
Arkansas                  70,699         42,242        112,941
California               659,405        296,651        956,056
Colorado                  93,065         45,069        138,134
Connecticut               84,009         31,378        115,387
Delaware                  18,844          9,096         27,939
District of Columbia       9,211          2,709         11,920
Florida                  299,930        144,682        444,612
Georgia                  217,807        107,692        325,499
Hawaii                    20,091          8,159         28,250
Idaho                     33,742         19,813         53,555
Illinois                 253,580        107,783        361,363
Indiana                  174,579         89,146        263,725
Iowa                      76,480         43,497        119,978
Kansas                    71,893         37,959        109,851
Kentucky                 113,245         61,522        174,767
Louisiana                 89,839         49,970        139,809
Maine                     35,515         20,660         56,175
Maryland                 126,817         53,138        179,955
Massachusetts            137,296         48,748        186,044
Michigan                 252,893        109,273        362,166
Minnesota                132,464         62,094        194,558
Mississippi               72,498         45,020        117,518
Missouri                 167,001         83,125        250,126
Montana                   27,322         17,026         44,348
Nebraska                  43,766         24,731         68,497
Nevada                    30,988         16,321         47,309
New Hampshire             32,351         16,897         49,248
New Jersey               159,460         61,426        220,886
New Mexico                52,269         31,958         84,227
New York                 317,253        126,359        443,612
North Carolina           192,285        100,044        292,330
North Dakota              19,531         11,508         31,039
Ohio                     282,603        126,366        408,969
Oklahoma                 100,295         52,658        152,953
Oregon                    84,930         45,058        129,988
Pennsylvania             254,841        121,159        376,000
Rhode Island              20,489          6,998         27,487
South Carolina            98,405         58,821        157,226
South Dakota              23,804         14,612         38,416
Tennessee                148,259         75,407        223,667
Texas                    476,931        216,639        693,570
Utah                      50,521         23,425         73,946
Vermont                   18,131         10,162         28,293
Virginia                 182,925         93,046        275,971
Washington               142,421         60,383        202,804
West Virginia             48,686         29,510         78,196
Wisconsin                144,875         74,397        219,271
Wyoming                   21,408         13,445         34,853

Total                  6,417,650      3,069,488      9,487,138


Modeled with 65 mph speeds o­n rural interstates and principal arterial
roads and o­n urban interstate and other freeways and expressways
for all vehicle types.




                                Table 6

                          1994 Highway Vehicle
                             NOx Emissions

                          with Likely Effects
                           of New Speed Limit
                             (Likely Case)


                        1994 Likely Case NOx Emissions (tons)

                       Light-Duty     Heavy-Duty         All
State                   Vehicles       Vehicles       Vehicles

Alabama                  119,344         53,320        172,664
Alaska                    11,747          4,500         16,247
Arizona                   84,239         35,363        119,602
Arkansas                  66,001         30,694         96,694
California               527,430        213,317        740,748
Colorado                  82,742         32,384        115,125
Connecticut               64,465         23,245         87,710
Delaware                  15,142          6,902         22,044
District of Columbia       7,737          2,286         10,023
Florida                  274,081        108,530        382,611
Georgia                  193,385         81,615        275,000
Hawaii                    16,561          6,983         23,544
Idaho                     32,405         14,902         47,307
Illinois                 226,292         83,066        309,359
Indiana                  161,397         68,419        229,816
Iowa                      73,464         31,458        104,922
Kansas                    66,126         27,933         94,059
Kentucky                 104,264         45,802        150,065
Louisiana                 83,044         38,144        121,188
Maine                     34,433         16,103         50,536
Maryland                 105,618         38,949        144,567
Massachusetts            108,300         36,795        145,095
Michigan                 222,395         83,471        305,866
Minnesota                105,734         45,987        151,721
Mississippi               69,836         35,023        104,859
Missouri                 146,705         59,523        206,227
Montana                   26,957         11,854         38,811
Nebraska                  42,201         18,277         60,478
Nevada                    28,532         11,843         40,375
New Hampshire             29,945         12,325         42,270
New Jersey               136,708         47,339        184,047
New Mexico                50,320         22,952         73,271
New York                 255,046         98,126        353,172
North Carolina           177,367         78,311        255,678
North Dakota              19,168          8,190         27,358
Ohio                     248,014         97,841        345,855
Oklahoma                  91,459         39,856        131,315
Oregon                    77,448         32,079        109,528
Pennsylvania             211,943         92,727        304,670
Rhode Island              16,431          5,371         21,802
South Carolina            93,254         43,879        137,132
South Dakota              23,296         10,472         33,768
Tennessee                135,117         56,331        191,448
Texas                    407,912        160,823        568,734
Utah                      44,536         16,572         61,108
Vermont                   15,528          7,698         23,227
Virginia                 165,109         70,200        235,309
Washington               120,682         43,970        164,653
West Virginia             46,365         21,793         68,158
Wisconsin                136,212         55,905        192,118
Wyoming                   20,931          9,503         30,434

Total                  5,623,370      2,298,948      7,922,318


Modeled with 65 mph speeds o­n rural interstates and principal arterial
roads for light duty vehicles and trucks o­nly and o­nly in states with
former limits above 65.




                                Table 7
                           Comparison of Base
                          Case and Likely Case
                          1994 Highway Vehicle
                             NOx Emissions



                     1994 Total NOx Emissions    Increase in    Percentage
                                                   1994
                       from All Vehicle Types       NOx         Increase
                             (tons)               Emissions

State                Base Case    Likely Case      (tons)     in Emissions

Alabama                161,898        172,664      10,766          6.65
Alaska                  15,343         16,247         904          5.89
Arizona                114,023        119,602       5,579          4.89
Arkansas                88,067         96,694       8,627          9.80
California             713,718        740,748      27,030          3.79
Colorado               107,982        115,125       7,143          6.62
Connecticut             87,710         87,710           0          0.00
Delaware                22,044         22,044           0          0.00
District of Columbia    10,023         10,023           0          0.00
Florida                360,665        382,611      21,946          6.08
Georgia                261,119        275,000      13,881          5.32
Hawaii                  23,453         23,544          91          0.39
Idaho                   43,457         47,307       3,850          8.86
Illinois               296,573        309,359      12,786          4.31
Indiana                216,037        229,816      13,779          6.38
Iowa                    94,727        104,922      10,195         10.76
Kansas                  86,504         94,059       7,555          8.73
Kentucky               139,035        150,065      11,030          7.93
Louisiana              114,193        121,188       6,996          6.13
Maine                   46,887         50,536       3,649          7.78
Maryland               137,673        144,567       6,895          5.01
Massachusetts          145,095        145,095           0          0.00
Michigan               290,085        305,866      15,781          5.44
Minnesota              151,721        151,721           0          0.00
Mississippi             97,270        104,859       7,588          7.80
Missouri               190,594        206,227      15,633          8.20
Montana                 34,425         38,811       4,386         12.74
Nebraska                55,152         60,478       5,325          9.66
Nevada                  37,839         40,375       2,536          6.70
New Hampshire           38,717         42,270       3,553          9.18
New Jersey             177,288        184,047       6,758          3.81
New Mexico              67,507         73,271       5,764          8.54
New York               353,172        353,172           0          0.00
North Carolina         240,850        255,678      14,828          6.16
North Dakota            24,308         27,358       3,050         12.55
Ohio                   331,190        345,855      14,664          4.43
Oklahoma               123,108        131,315       8,207          6.67
Oregon                 100,156        109,528       9,372          9.36
Pennsylvania           304,670        304,670           0          0.00
Rhode Island            21,802         21,802           0          0.00
South Carolina         127,574        137,132       9,559          7.49
South Dakota            30,263         33,768       3,505         11.58
Tennessee              180,325        191,448      11,123          6.17
Texas                  540,257        568,734      28,477          5.27
Utah                    57,637         61,108       3,471          6.02
Vermont                 23,227         23,227           0          0.00
Virginia               221,718        235,309      13,591          6.13
Washington             155,838        164,653       8,815          5.66
West Virginia           62,603         68,158       5,554          8.87
Wisconsin              176,709        192,118      15,409          8.72
Wyoming                 27,475         30,434       2,959         10.77

Total                7,529,705      7,922,318     392,613          5.21
 
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CA Governor urges drivers to slow down

Speaking at a climate change conference in Miami, California Governor Arnold Scwarzenegger said drivers can do a lot to cut fuel costs by driving slower.

"Who can cut (costs) down is you, you, you and you," Schwarzenegger said. "You can cut it down. Take your car, for instance. Go and get the perfect tire pressure. Tune up your engine. Drive slower." He went on to say "energy prices are not going to go back to the good old days" and it is "bogus" for politicians to promise otherwise."

"Politicians have been throwing around all kinds of ideas in response to the skyrocketing energy prices, from the rethinking of nuclear power to pushing biofuels and more renewables and ending the ban on offshore drilling," Schwarzenegger said. "But anyone who tells you this would bring down gas prices any time soon is blowing smoke. I think that people should really be in charge of their own destiny and how much they want to pay for fuel, not wait for the politicians," he said. 

The Drive 55 Conservation Project is delighted with the Governor's message and hand delivered a Thank You letter with Drive 55 bumper stickers to his office in Sacramento today. Leadership in the legislature also got a letter and some Drive 55 bumper stickers hand delivered to their offices in the Capital, inviting them to 'Lead by example'.

Quote sources:
Sacramento BEE
http://www.sacbee.com/111/story/1042081.html
LA Times
http://www.latimes.com/news/politics/

 
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Neil Cavuto and FOX Business News did a 3 minute piece on June 12, 2008.

 
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