News Releases from Headquarters

EPA Announces Intent to Revisit Provisions of Phase 2 Heavy-Duty Rules

WASHINGTON — The U.S. Environmental Protection Agency (EPA) announced today its intent to revisit provisions of the Phase 2 Greenhouse Gas Emissions and Fuel Efficiency Standards for Medium- and Heavy-Duty Engines following concerns raised by stakeholders in the trailer and glider industry.

“In light of the significant issues raised, the agency has decided to revisit the Phase 2 trailer and glider provisions,” said EPA Administrator Scott Pruitt. “We intend to initiate a rulemaking process that incorporates the latest technical data and is wholly consistent with our authority under the Clean Air Act.”

Background: 

In September 2011, EPA and the National Highway Traffic Safety Administration (NHTSA) issued greenhouse gas (GHG) emissions and fuel efficiency standards for medium- and heavy-duty vehicles for model year 2014-2018 (“Phase 1”). These standards applied to newly manufactured engines, tractors, vocational vehicles, large pickups, and vans. In October 2016, EPA and NHTSA updated the standards for medium- and heavy-duty vehicles MY 2021-2027 (“Phase 2”), and regulated trailers and gliders – for the first time under the GHG program – with compliance deadlines beginning in 2018.