Greenhouse Gas Emissions by Transportation Mode: 2015

percent of TgCo2 Eq


Percents may not add to 100 due to rounding. Does not include International Bunker Fuels.

Key: GHG = greenhouse gas. Tg CO₂ Eq. = teragrams of carbon dioxide equivalent. A teragram = 1 million metric tons.


U.S. Environmental Protection Agency, Inventory of U.S. Greenhouse Gas Emissions and Sinks: 1990-2015 Report Tables, available at

Last Updated: October 2017 | Retrieved: November 2017