TABLE 8-1 Transportation Energy Use by Mode: 2011
Energy and Physical Units of Measure
| Trillion Btu | Percent of total | Units | Physical units | |
|---|---|---|---|---|
| Air | ||||
| Certificated carriersa | ||||
| Jet fuel | 1,467 | 5.8% | (million gallons) | 10,864 |
| General aviationb | ||||
| Aviation gasoline | 26 | 0.1% | (million gallons) | 216 |
| Jet fuel | 201 | 0.8% | (million gallons) | 1,491 |
| Highway | ||||
| Gasoline, diesel and other fuels | ||||
| Light duty vehicle, short wheel base and motorcyclec | 11,120 | 44.0% | (million gallons) | 88,962 |
| Light duty vehicle, long wheel basec | 4,416 | 17.5% | (million gallons) | 35,326 |
| Single-unit 2-axle 6-tire or more truck | 1,773 | 7.0% | (million gallons) | 14,183 |
| Combination truck | 3,524 | 14.0% | (million gallons) | 28,193 |
| Bus | 242 | 1.0% | (million gallons) | 1,933 |
| Transit | ||||
| Electricity | 22 | 0.1% | (million kWh) | 6,534 |
| Motor fuel | ||||
| Dieseld | 80 | 0.3% | (million gallons) | 625 |
| Gasoline and other nondiesel fuelse | 19 | 0.1% | (million gallons) | 101 |
| Compressed natural gas | 18 | 0.1% | (million gallons) | 128 |
| Rail, Class I (in freight service) | ||||
| Distillate / diesel fuel | 511 | 2.0% | (million gallons) | 3,685 |
| Amtrak | ||||
| Electricity | 2 | 0.01% | (million kWh) | 555 |
| Distillate / diesel fuel | 9 | 0.03% | (million gallons) | 63 |
| Water | ||||
| Residual fuel oil | 683 | 2.7% | (million gallons) | 4,560 |
| Distillate / diesel fuel oil | 295 | 1.2% | (million gallons) | 2,128 |
| Gasoline | 138 | 0.5% | (million gallons) | 1,104 |
| Pipeline | ||||
| Natural gas | 705 | 2.8% | (million cubic feet) | 683,715 |
| TOTAL | 25,250 |
KEY: Btu = British thermal unit.
a Domestic operations only.
b Includes fuel used in air taxi operations, but not commuter operations.
c Light duty vehicle, short wheel base includes passenger cars, light trucks, vans and sport utility vehicles with a wheelbase (WB) equal to or less than 121 inches. Light duty vehicle, long wheel base includes large passenger cars, vans, pickup trucks, and sport/utility vehicles with wheelbases (WB) larger than 121 inches.
d Diesel includes Diesel and Bio-Diesel.
e Gasoline and all other nondiesel fuels include Gasoline, Liquefied Petroleum Gas, Liquefied Natural Gas, Methane, Ethanol, Bunker Fuel, Kerosene, Grain Additive, and Other Fuel.
NOTES: The following conversion rates were used:
Jet fuel = 135,000 Btu/gallon.
Aviation gasoline = 120,200 Btu/gallon.
Automotive gasoline = 125,000 Btu/gallon.
Diesel motor fuel = 138,700 Btu/gallon.
Compressed natural gas = 138,700 Btu/gallon.
Distillate fuel = 138,700 Btu/gallon.
Residual fuel = 149,700 Btu/gallon.
Natural gas = 1,031 Btu/ft3.
Electricity 1kWh = 3,412 Btu, negating electrical system losses. To include approximate electrical system losses, multiply this conversion factor by 3.
SOURCE: U.S. Department of Transportation, Bureau of Transportation Statistics, National Transportation Statistics, tables 4-5 & 4-6. Available at http://www.bts.gov as of November 2013.