Table 1 - U.S. Transportation-Related Carbon Dioxide Emissions

Table 1 - U.S. Transportation-Related Carbon Dioxide Emissions

(Teragrams of carbon dioxide equivalents)

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Vehicle type 1990 1999 Growth rate 1990-1999
Passenger cars 620 688.9 11%
Light-duty trucks 283.1 364.8 29%
Other trucks 206 269.7 31%
Buses 10.7 12.9 21%
Aircraft1 176.7 184.6 4%
Boats and vessels 59.4 65.6 10%
Locomotives 28.4 35.1 24%
Other2 90.1 94.9 5%
Total 1,474.40 1,716.50 16%
International Bunker Fuels3 114 107.3 -6%

1 Aircraft emissions are from all jet fuel (less bunker fuels) and aviation gas consumption.

2 "Other" carbon dioxide emissions are from motorcycles, construction equipment, agricultural machinery, pipelines, and lubricants.

3 U.S. emissions from International Bunker Fuels are from both civilian and military activities, but are not included in totals.

NOTE: The equation to convert teragrams of carbon dioxide equivalents (TgCO2Eq.) to million metric tons of carbon equivalent (mmtce) is: TgCO2Eq. = mmtce x (44/12).

SOURCE: U.S. Environmental Protection Agency, Inventory of U.S. Greenhouse Gas Emissions and Sinks: 1990-1999, EPA-236-R-01-001 (Washington, DC: April 2001), table ES-4.