Rule Summary
Related Information
Regulations for Greenhouse Gas Emissions from Commercial Trucks & Buses
Regulations for Smog, Soot, and Other Air Pollution from Commercial Trucks & Buses
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On March 29, 2024, the U.S. Environmental Protection Agency (EPA) announced a final rule, “Greenhouse Gas Emissions Standards for Heavy-Duty Vehicles – Phase 3,” that sets stronger standards to reduce greenhouse gas emissions from heavy-duty (HD) vehicles beginning in model year (MY) 2027. The new standards will be applicable to HD vocational vehicles (such as delivery trucks, refuse haulers, public utility trucks, transit, shuttle, school buses, etc.) and tractors (such as day cabs and sleeper cabs on tractor-trailer trucks).
The final “Phase 3” standards build on EPA’s Heavy-Duty Phase 2 program from 2016 and maintain that program’s flexible structure, which is designed to reflect the diverse nature of the heavy-duty vehicle industry. The standards are technology-neutral and performance-based, allowing each manufacturer to choose what set of emissions control technologies is best suited for them and the needs of their customers.
Final Rule: Greenhouse Gas Emissions Standards for Heavy-Duty Vehicles -Phase 3 (pdf) (20.1 MB, published April 22, 2024)
Final Rule Correction: Greenhouse Gas Emissions Standards for Heavy-Duty Vehicles -Phase 3 (pdf) (435 KB, published June 17, 2024) Read More →
