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Table 4-22: Energy Intensity of Passenger Cars, Other 2-Axle
4-Tire Vehicles, and Motorcycles
Excel | CSV
| Vehicle-miles
(millions) |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Passenger
car |
587,000 |
723,000 |
917,000 |
1,034,000 |
1,112,000 |
1,247,000 |
1,408,000 |
1,358,000 |
1,372,000 |
1,375,000 |
1,406,000 |
1,438,000 |
1,470,000 |
1,503,000 |
1,550,000 |
1,569,000 |
1,600,287 |
(R)
1,628,332 |
1,658,474 |
1,660,828 |
| Other
2-axle 4-tire vehicle |
N |
N |
123,000 |
201,000 |
291,000 |
391,000 |
575,000 |
649,000 |
707,000 |
746,000 |
765,000 |
790,000 |
817,000 |
851,000 |
868,000 |
901,000 |
923,059 |
(R)
943,207 |
966,034 |
998,004 |
| Motorcycle |
b |
b |
3,000 |
5,600 |
10,200 |
9,100 |
9,600 |
9,200 |
9,600 |
9,900 |
10,200 |
9,800 |
9,900 |
10,100 |
10,300 |
10,600 |
10,469 |
(R)
9,639 |
9,552 |
9,539 |
| Passenger-miles
(millions)a |
|
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|
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|
|
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|
|
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| Passenger
car |
1,145,000 |
1,395,000 |
1,751,000 |
1,954,000 |
2,012,000 |
2,094,000 |
2,282,000 |
2,200,000 |
2,208,000 |
2,213,000 |
2,250,000 |
2,287,000 |
2,337,000 |
2,389,000 |
2,464,000 |
2,495,000 |
2,544,457 |
(R)
2,556,481 |
2,620,389 |
2,624,108 |
| Other
2-axle 4-tire vehicle |
N |
N |
226,000 |
363,000 |
521,000 |
688,000 |
1,000,000 |
1,117,000 |
1,202,000 |
1,253,000 |
1,269,000 |
1,256,000 |
1,298,000 |
1,353,000 |
1,381,000 |
1,433,000 |
1,467,664 |
(R)
1,678,853 |
1,674,792 |
1,730,218 |
| Motorcycle |
b |
b |
3,000 |
6,000 |
12,000 |
12,000 |
12,000 |
12,000 |
12,000 |
12,000 |
12,000 |
11,000 |
11,000 |
11,000 |
11,000 |
12,000 |
11,516 |
(R)
11,760 |
12,131 |
12,115 |
| Fuel
consumed (million gallons) |
|
|
|
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| Passenger
car |
41,171 |
49,723 |
67,819 |
74,140 |
69,982 |
71,518 |
69,568 |
64,317 |
65,436 |
67,048 |
67,874 |
68,072 |
69,221 |
69,892 |
71,695 |
73,283 |
73,065 |
(R)
73,559 |
75,471 |
74,590 |
| Other
2-axle 4-tire vehicle |
N |
N |
12,313 |
19,081 |
23,796 |
27,363 |
35,611 |
38,217 |
40,929 |
42,851 |
44,112 |
45,605 |
47,354 |
49,388 |
50,462 |
52,859 |
52,939 |
(R) 53,522 |
55,220 |
56,302 |
| Motorcycle |
b |
b |
60 |
113 |
204 |
182 |
191 |
184 |
191 |
198 |
205 |
196 |
198 |
202 |
206 |
212 |
209 |
(R)
193 |
191 |
191 |
| Energy
intensity (Btu/passenger-mile)c |
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| Passenger
car |
4,495 |
4,455 |
4,841 |
4,743 |
4,348 |
4,269 |
3,811 |
3,654 |
3,704 |
3,787 |
3,771 |
3,721 |
3,702 |
3,657 |
3,637 |
3,671 |
3,589 |
(R) 3,597 |
3,600 |
3,553 |
| Other
2-axle 4-tire vehicle |
N |
N |
6,810 |
6,571 |
5,709 |
4,971 |
4,451 |
4,277 |
4,256 |
4,275 |
4,345 |
4,539 |
4,560 |
4,563 |
4,568 |
4,611 |
4,509 |
(R) 3,985 |
4,121 |
4,068 |
| Motorcycle |
a |
a |
2,500 |
2,354 |
2,125 |
1,896 |
1,990 |
1,917 |
1,990 |
2,063 |
2,135 |
2,227 |
2,250 |
2,295 |
2,341 |
2,205 |
2,273 |
(R) 2,049 |
1,969 |
1,968 |
KEY: Btu = British thermal unit; N
= data do not exist; R = revised.
a Passenger-miles are derived by multiplying
vehicle-miles by an average occupancy rate for that vehicle type based on
data provided by the Federal Highway Administration, Nationwide Personal
Transportation Survey (1977, 1983, 1995) and Federal Highway Administration
and Bureau of Transportation Statistics, National Household Travel Survey
(2001). Average vehicle occupancy
rates are as follows:
passenger
car (1960-2002): 1.95, 1.93, 1.91, 1.89, 1.81, 1.68, 1.62, 1.62, 1.61, 1.61,
1.60, 1.59, 1.59, 1.59, 1.59, 1.59, 1.59, 1.57, 1.57;
other 2-axle 4-tire vehicle (1970-2002): 1.84, 1.81, 1.79, 1.76,
1.74, 1.72, 1.70, 1.68, 1.66, 1.59, 1.59, 1.59, 1.59, 1.59, 1.59, 1.78, 1.78;
motorcycle (1970-2002): 1.00, 1.07, 1.18, 1.32, 1.25, 1.30,
1.25, 1.21, 1.18, 1.12, 1.11, 1.09, 1.07, 1.13, 1.10, 1.22, 1.22.
b Included in passenger car.
c Energy Intensity
(Btu/passenger-mile) is calculated by converting the fuel consumption in
gallons to the energy equivalent Btu units and dividing by the
passenger-miles. The heat equivalent
factor used for Btu conversion is 125,000 Btus/gallon.
NOTES:
In
1995, the U.S. Department of Transportation, Federal Highway Administration
revised its vehicle type categories for 1993 and later data.
These
new categories include passenger car, other 2-axle 4-tire vehicle,
single-unit 2-axle 6-tire or more truck, and combination truck.
Other 2-axle 4-tire vehicle includes vans, pickup trucks, and
sport utility vehicles. In previous
years, some minivans and sport utility vehicles were included in the
passenger car category. Single-unit
2-axle 6-tire or more trucks are on a single frame with at least 2 axles and
6 tires. Pre-1993 data have been
reassigned to the closest available category.
Vehicle-miles and passenger-miles data for 1960 through 1999
have been rounded to the nearest billion miles.
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