TRANSPORTATION ENERGY DATA BOOK: EDITION 20 - Center for ...

Highway
Automobiles
Motorcycles
Table 2.7
Transportation Energy Consumption by Mode, 1970-98
Total gallons of fuel for automobiles was taken from DOT, FHWA, Highway Statistics
Summary to 1995, Table VM-20 1 A; and Table VM- 1 in the 1996-l 998 annual editions.
Fuel for automobiles was distributed between fuel types for conversion into Btu’s as
follows:
1970-80 - 94.7% gasoline, 5.3% diesel as reported in the DOE, EIA, Office of Energy
Markets and End Use, Residential Energy Consumption Survey: Consumption
Patterns ofHousehold Vehicles, June 1979 to December 1980, p. 10.
1981-82 - 94.1% gasoline, 5.9% diesel as reported in the DOE, EIA, Office of Energy
Markets and End Use, Residential Energy Consumption Survey: Consumption
Patterns of Household Vehicles, Supplement: January I981 to September 1981,
pp. 11, 13.
1983-84 - 97.5% gasoline, 2.5% diesel as reported in the DOE, EIA, Office of Markets
and End Use, Energy End Use Division, Residential Transportation Energy
Consumption Survey: Consumption Patterns of Household Vehicles, 1983, Jan.,
1985, pp. 7, 9.
1985-87 - 98.5% gasoline, 1.5% diesel as reported in the DOE, EIA, Office of Energy
Markets and End Use, Residential Transportation Energy Consumption Survey:
Consumption Patterns ofHousehold Vehicles 1985, April 1987, pp. 25, 27.
1988-90 - 98.8% gasoline and 1.2% diesel as reported in the DOE, EIA, Office of
Markets and End Use, Energy End Use Division, Household Vehicles Energy
Consumption 1988, March 1990, p. 65.
1991-93 - 97.8% gasoline, 1 .O% gasohol, and 1.2% diesel as reported in the DOE, EIA,
Office of Markets and End Use, Energy End Use Division, Household Vehicles
Energy Consumption 1991, December 1993, p. 46.
1994-98 - 97.7% gasoline, 1.0% gasohol, 1.3% diesel as reported in the DOE, EIA,
Office of Energy Markets and End Use, Household Vehicles Energy Consumption,
1994, Washington, DC, August 1997, p. 46.
1993-98 - Natural gas data are from the DOE, EIA Natural Gas Annual f998, Table 1;
transit bus natural gas was subtracted from the total and the remainder was
assumed to be light vehicle use. Automobiles were assumed to use 25% of light
vehicle natural gas use.
Department of Transportation, Federal Highway AdministratioqHighway Statistics Summary
to 1995, Table VM-201A; and Table VM-1 in the 1996-98 annual editions. For
conversion purposes, fLle1 for all motorcycles was assumed to be gasoline.
TRANSPORTATIONENERGYDATABOOK: EUITION~O-2000
A-7