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7-5 Transportation GHG Emissions by Mode: 2012

Wednesday, January 7, 2015

Graphic Version | Excel

percent of TgCO2 Eq.

Mode TgCO2 Eq. Percent
Highway 1,559 85
Air 147 8
Water 41 2
Rail 47 3
Pipeline 48 3

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

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

Source: U.S. Environmental Protection Agency, Inventory of U.S. Greenhouse Gas Emissions and Sinks: 1990–2012, available at www.epa.gov/climatechange/ghgemissions/usinventoryreport.html as of September 2014.