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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

Transportation-Related Greenhouse Gas Emissions

Embedded Dataset Excel:

Dataset Excel:

table_04_44_092523.xlsx (35.87 KB)


Passenger cars and light-duty trucks include vehicles typically used for personal travel and less than 8,500 lbs; medium- and heavy-duty trucks include vehicles larger than 8,500 lbs.

HFC (hydrofluorocarbon) emissions primarily reflect HFC-134a (norflurane).

Totals may not sum due to independent rounding. 


a Consists of emissions from jet fuel consumed by domestic operations of commercial aircraft (no bunkers).

b Consists of emissions from jet fuel and aviation gasoline consumption by general aviation and military aircraft.

c Fluctuations in emission estimates are associated with fluctuations in reported fuel consumption and may reflect issues with data sources.

d Other electric power emissions are a result of waste incineration (as the majority of municipal solid waste is combusted in “trash-to-steam” electric power plants), electrical transmission and distribution, and a portion of Other Process Uses of Carbonates (from pollution control equipment installed in electric power plants).

e CO2 estimates reflect natural gas used to power pipelines, but not electricity. While the operation of pipelines produces CH4 and N2O, these emissions are not directly attributed to pipelines in the Inventory.


U.S. Environmental Protection Agency, Inventory of U.S. Greenhouse Gas Emissions and Sinks, Table 2-13, available at as of Aug. 23, 2023.