WASHINGTON (July 13, 2015) — The National Highway Traffic Safety Administration (NHTSA) and the U.S. Environmental Protection Agency (EPA) have issued a sweeping, 629-page proposed rule on reducing greenhouse gas emissions and fuel consumption from heavy-duty vehicles.
Issued jointly last month by the EPA and NHTSA, the document represents Phase 2 of President Barack Obama's February 2014 directive to increase fuel economy and reduce greenhouse gas emissions from the nation's truck fleet. The agencies' proposal appeared in the July 13 issue of the Federal Register.
The proposal covers model years 2018-2027, and covers four categories of heavy-duty vehicles:
• Combination tractors;
• Trailers used in combination with those tractors;
• Heavy-duty pickup trucks and vans; and
• Vocational vehicles.
The document also includes separate standards for the engines in combination tractors and vocational vehicles, according to the Federal Register summary.