NHTSA Moves to Rewrite Truck Fuel-Economy Rules

The National Highway Traffic Safety Administration says it lacks authority to regulate medium- and heavy-duty truck engines separately from complete vehicles, but the existing standards have not yet been eliminated.

Federal fuel-efficiency standards for medium- and heavy-duty truck engines are headed for elimination under a new legal interpretation from the National Highway Traffic Safety Administration.

But despite the Trump administration’s characterization of the action as reversing an Obama-era rule, the existing engine standards did not disappear August 31.

Instead, NHTSA issued an interpretive rule concluding that Congress authorized it to regulate the fuel efficiency of complete commercial vehicles, but not engines as separate components.

This story was originally published by TruckingInfo (HDT). Read the full story at TruckingInfo (HDT) →