Table 4-20M: Energy Intensity of Passenger Modes
Table 4-20M: Energy Intensity of Passenger Modes
(Kilojoules per passenger-kilometer)
1960 | 1965 | 1970 | 1975 | 1980 | 1985 | 1990 | 1991 | 1992 | 1993 | 1994 | 1995 | 1996 | 1997 | 1998 | 1999 | 2000 | |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
AirR | |||||||||||||||||
Certificated air carrier | |||||||||||||||||
Domestic operations | 5,659 | 6,633 | 6,677 | 5,078 | 3,755 | 3,308 | 3,233 | 3,062 | 2,992 | 2,988 | 2,913 | 2,873 | 2,742 | R2,731 | 2,703 | 2,655 | 2,585 |
International operations | 6,031 | 6,748 | 7,202 | 5,550 | R2,845 | 3,345 | 2,980 | 3,022 | 2,792 | 2,687 | 2,718 | 2,736 | 2,693 | 2,733 | 2,804 | 2,703 | 2,628 |
Highwayb | |||||||||||||||||
Passenger car | 2,947 | 2,921 | 3,174 | 3,109 | 2,850 | 2,797 | 2,499 | 2,395 | 2,428 | 2,481 | 2,472 | 2,439 | R2,418 | 2,397 | R2,384 | 2,407 | 2,346 |
Other 2-axle 4-tire vehicle | N | N | 4,465 | 4,308 | 3,743 | 3,259 | 2,918 | 2,804 | 2,790 | 2,803 | 2,849 | R2,975 | R2,977 | R2,992 | R2,995 | 3,024 | 2,947 |
Motorcycle | a | a | 1,639 | 1,543 | 1,393 | 1,243 | 1,305 | 1,257 | 1,305 | 1,352 | 1,400 | R1,491 | R1,489 | R1,490 | R1,490 | 1,490 | 1,490 |
Transit motor bus | N | N | N | N | 1,798 | 2,226 | 2,441 | 2,470 | 2,647 | 2,586 | 2,728 | 2,724 | 2,751 | 2,772 | R2,710 | P2,651 | U |
Amtrak | N | N | N | 1,562 | 1,419 | 1,373 | 1,353 | 1,297 | 1,334 | 1,326 | 1,269 | 1,205 | 1,408 | 1,442 | 1,402 | 1,381 | 1,399 |
KEY: N = data do not exist; P = preliminary; R = revised; U = unavailable.
a Included in passenger car.
b For 1995 and subsequent years, highway passenger-kilometers were taken directly from Highway Statistics rather than derived from vehicle-kilometers and average occupancy, as is the case for 1960-1994.
NOTES: To calculate total joules, multiply fuel consumed (see tables 4-21, 4-22, 4-24, 4-25) by 37,626,700 joules/liter for air carrier, 34,839,537 joules/liter for passenger car, other 2-axle 4-tire vehicle, and motorcycle, and 38,657,950 joules/liter for transit motor bus and Amtrak.
Numbers may differ slightly from previous year's metric tables because a higher precision conversion factor was used.
SOURCES:
Air:
Certificated air carriers:
Passenger-miles:
Air Transport Association, Internet site http://www.air-transport.org/public/industry as of Aug. 22, 2001.
Fuel consumed:
U.S. Department of Transportation, Bureau of Transportation Statistics, Office of Airline Information, Internet site http://www.bts.gov/oai/fuel/fuelyearly.html as of Aug. 22, 2001.
Highway:
Passenger car:
1960-94: U.S. Department of Transportation, Federal Highway Administration, Highway Statistics Summary to 1995, FHWA-PL-97-009 (Washington, DC: July 1997), table VM-201A.
1995-2000: Ibid., Highway Statistics (Washington, DC: Annual issues), table VM-1.
Other 2-axle 4-tire vehicle:
1970-94: Ibid., Highway Statistics Summary to 1995, FHWA-PL-97-009 (Washington, DC: July 1997), table VM-201A.
1995-2000: Ibid., Highway Statistics (Washington, DC: Annual issues), table VM-1.
Motorcycle:
1970-85: Ibid., Highway Statistics Summary to 1985, FHWA-PL-97-009 (Washington, DC: July 1997), table VM-201A.
1990-2000: Ibid., Highway Statistics (Washington, DC: Annual issues), table VM-1.
Transit motor bus:
American Public Transportation Association, Public Transportation Fact Book (Washington, DC: March 2001), tables 30 and 65.
Amtrak:
Amtrak, State and Local Affairs Department, personal communications.