EPA Threads the Needle With Phase 3 Rule to Reduce GHG Emissions From Heavy-Duty Vehicles

On March 29, 2024, the Environmental Protection Agency (EPA) finalized its Greenhouse Gas Emissions Standards for Heavy-Duty Vehicles – Phase 3 for model years 2027 through 2032. These standards will apply to heavy-duty vocational vehicles, including delivery trucks, refuse haulers, public utility trucks, tractors, and transit, shuttle, and school buses. These rules replace the Phase 2 greenhouse gas (GHG) standards for on-highway heavy-duty trucks and engines that were promulgated established in 2016. The new rule will be effective 60 days after publication in the Federal Register.