U.S.: government finalizes strongest ever greenhouse gas standards for heavy-duty vehicles

On March 29, 2024, the U.S. Environmental Protection Agency (EPA) announced the final Phase 3 national greenhouse gas (GHG) pollution standards. These standards, which apply to heavy-duty vehicles for model years (MY) 2027 through 2032, build on the Phase 2 GHG standards established in 2016.

The final Phase 3 standards target heavy-duty vocational vehicles — such as delivery trucks, refuse haulers, public utility trucks, and transit, shuttle, and school buses — as well as tractors, including day and sleeper cabs on tractor-trailer trucks. The standards are designed to be technology-neutral and performance-based, allowing manufacturers to select the emissions control technologies that best meet their needs.

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