FIGURE 8-5 Greenhouse Gas Emissions by Transportation Source: 1990-2011
KEY: Tg CO2 Eq = teragrams of carbon dioxide equivalent
NOTES: Totals may not sum due to independent rounding. Passenger cars and light duty trucks include vehicles typically used for personal travel and less than 8,500 lbs. Medium & Heavy Vehicles includes buses and vehicles larger than 8500 lbs. Oceangoing vessels includes international bunker fuels.
SOURCE: U.S. Environmental Protection Agency, Inventory of U.S. Greenhouse Gas Emissions and Sinks (Washington, DC: Annual Issues), table 2-15. Available at http://epa.gov/climatechange/emissions/usinventoryreport.html as of November 2013.