Table 1,,,
U.S. Transportation-Related Carbon Dioxide Emissions,,,
(Teragrams of carbon dioxide equivalents),,,
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.",,,
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