Which federal agency oversees the regulations for commercial motor vehicles in the U.S.?

The Federal Motor Carrier Safety Administration (FMCSA) is the agency responsible for regulating and overseeing the safety of commercial motor vehicles in the United States. Established to enhance safety on the nation's highways, the FMCSA develops and enforces regulations that govern the operation of commercial vehicles, including trucking companies and drivers. This role includes implementing safety standards, conducting audits and inspections, and providing training and resources to improve safety practices.

While the National Highway Traffic Safety Administration (NHTSA) deals with vehicle safety standards, including passenger vehicles, its primary focus is not specifically on commercial vehicles. The Environmental Protection Agency (EPA) regulates environmental standards, which may indirectly affect commercial vehicles but does not oversee their operation. The Department of Transportation (DOT) encompasses various agencies responsible for transportation in general, including the FMCSA, but does not directly oversee the regulations for commercial motor vehicles on its own. Therefore, FMCSA is the most accurate choice for overseeing regulations specifically pertaining to commercial motor vehicles.