On March 7, 2022, the Environmental Protection Agency (EPA) proposed new standards for reducing air pollution from highway heavy-duty vehicles and engines, including ozone, particulate matter, and greenhouse gases. EPA’s proposal would alter many aspects of the agency’s heavy-duty emission control program, including standards, test procedures, useful life, warranty, and other requirements. EPA’s proposal would also update the agency’s Heavy-Duty Greenhouse Gas Emissions Phase 2 program by proposing additional greenhouse gas reductions in the model year 2027 timeframe.
EPA is accepting comments within 46 days of the proposed rule’s publication in the Federal Register.