Court Says Trailers Not ‘Motor Vehicles,’ Vacates GHG, Fuel Economy Rules

November 12, 2021
The U.S. Court of Appeals for the District of Columbia Circuit is backing trailer industry arguments that their products are not “motor vehicles” subject to regulation under the Clean Air Act and is vacating rules by both EPA and the Transportation Department (DOT) to limit their greenhouse gas emissions and improve fuel economy. The court’s Nov. 12 ruling in Truck Trailer Manufacturers Association (TTMA) v. EPA, et al. says because trailers “have no motor, [t]hey are therefore not ‘motor...

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