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U.S. Department of Transportation U.S. Department of Transportation Icon United States Department of Transportation United States Department of Transportation

7-5 Greenhouse Gas Emissions by Transportation Mode: 2013

Monday, December 28, 2015

Graphic Version | Excel

percent of TgCO2 Eq.

Mode TgCO2 Eq. Percent
Highway 1,517 84
Air 150 8
Water 40 2
Rail 48 3
Pipeline 48 3

Key: GHG = greenhouse gas. TgCO2 Eq. = teragrams of carbon dioxide equivalent. A teragram = 1 million metric tons.

Note: Percents may not add to 100 due to rounding.

Source: U.S. Environmental Protection Agency, Inventory of U.S. Greenhouse Gas Emissions and Sinks: 1990–2013, available at www.epa.gov/climatechange/ghgemissions/usinventoryreport.html as of September 2015.