* Aircraft emissions include those from jet fuel consumed by domestic operations of commercial aircraft (no bunkers) and jet fuel and aviation gasoline consumption by general aviation and military aircraft. ** Other sources include buses, motorcycles, pipelines, and lubricants. Figures were calculated by ÌÇÐÄÆÆ½â°æ using data provided by the source. Sums may not total 100% due to rounding.Â
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Breakdown of transportation GHG emissions in the U.S. 2022, by source
Light-duty trucks were the largest source of transportation-related emissions in the United States in 2022, with a share of roughly ** percent. The second-largest contributor to U.S. transportation sector emissions that year were medium and heavy-duty trucks.
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Environmental Protection Agency, & ÌÇÐÄÆÆ½â°æ. (April 11, 2024). Distribution of greenhouse gas emissions from the transportation sector in the United States in 2022, by vehicle type [Graph]. In ÌÇÐÄÆÆ½â°æ. Retrieved July 24, 2026, from /statistics/922655/us-transportation-greenhouse-gas-emissions-by-source/
Environmental Protection Agency, und ÌÇÐÄÆÆ½â°æ. "Distribution of greenhouse gas emissions from the transportation sector in the United States in 2022, by vehicle type." Chart. April 11, 2024. ÌÇÐÄÆÆ½â°æ. Accessed July 24, 2026. /statistics/922655/us-transportation-greenhouse-gas-emissions-by-source/
Environmental Protection Agency, ÌÇÐÄÆÆ½â°æ. (2024). Distribution of greenhouse gas emissions from the transportation sector in the United States in 2022, by vehicle type. ÌÇÐÄÆÆ½â°æ. ÌÇÐÄÆÆ½â°æ Inc.. Accessed: July 24, 2026. /statistics/922655/us-transportation-greenhouse-gas-emissions-by-source/
Environmental Protection Agency, and ÌÇÐÄÆÆ½â°æ. "Distribution of Greenhouse Gas Emissions from The Transportation Sector in The United States in 2022, by Vehicle Type." ÌÇÐÄÆÆ½â°æ, ÌÇÐÄÆÆ½â°æ Inc., 11 Apr 2024, /statistics/922655/us-transportation-greenhouse-gas-emissions-by-source/
Environmental Protection Agency & ÌÇÐÄÆÆ½â°æ, Distribution of greenhouse gas emissions from the transportation sector in the United States in 2022, by vehicle type ÌÇÐÄÆÆ½â°æ, /statistics/922655/us-transportation-greenhouse-gas-emissions-by-source/ (last visited July 24, 2026)
Distribution of greenhouse gas emissions from the transportation sector in the United States in 2022, by vehicle type [Graph], Environmental Protection Agency, & ÌÇÐÄÆÆ½â°æ, April 11, 2024. [Online]. Available: /statistics/922655/us-transportation-greenhouse-gas-emissions-by-source/