TABLE 10-4a Change in Carbon Dioxide Emissions by Mode: 1992-2002

TABLE 10-4a Change in Carbon Dioxide Emissions by Mode: 1992-2002

Index: 1992 = 1.00

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  1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002
Passenger cars 1.00 1.02 1.03 1.03 1.05 1.04 1.08 1.10 1.10 1.10 1.13
Light-duty trucks 1.00 1.04 1.07 1.11 1.15 1.18 1.22 1.27 1.28 1.29 1.32
All other trucks 1.00 1.03 1.10 1.15 1.21 1.27 1.32 1.38 1.43 1.44 1.46
Buses 1.00 1.06 1.12 1.12 1.17 1.22 1.25 1.39 1.38 1.29 1.20
Total highway 1.00 1.03 1.06 1.08 1.11 1.13 1.16 1.20 1.22 1.22 1.25
Aircraft 1.00 1.01 1.05 1.03 1.08 1.07 1.08 1.12 1.16 1.10 1.06
Ships and boats 1.00 0.86 0.87 0.92 0.86 0.60 0.49 0.68 1.06 0.67 0.94
Locomotives 1.00 1.03 1.13 1.18 1.23 1.22 1.25 1.30 1.29 1.32 1.27
Other 1.00 1.01 1.06 1.07 1.11 1.14 1.06 1.03 1.06 1.12 1.09
Total all modes 1.00 1.02 1.05 1.07 1.10 1.10 1.12 1.16 1.20 1.18 1.21
International bunker fuels 1.00 1.03 1.05 1.10 1.11 1.18 1.16 1.15 1.14 1.10 0.97

NOTE: Highway total includes passenger cars, buses, light-duty trucks, and other trucks. Other carbon dioxide emissions are from motorcycles, construction equipment, agricultural machinery, pipelines, and lubricants. International bunker fuel emissions (not included in the total) result from the combustion of fuels purchased in the United States but used for international aviation and maritime transportation. Thus, aircraft and ships and boats data included in U.S. total emissions involve only domestic activities of these modes as do all other data shown. The large annual variations in ships and boats data may result from methodological problems related to the domestic/international partition of maritime emissions. Economic factors may also contribute. Alternative fuel vehicle emissions are allocated to the specific vehicle types in which they were classified (i.e., passenger cars, light-duty trucks, and other trucks and buses).

SOURCE: U.S. Environmental Protection Agency, Inventory of U.S. Greenhouse Gas Emissions and Sinks: 1990-2002, (Washington, DC: April 2004), table 2-9, available at http://www.epa.gov, as of May 2004.