Gross Combination Weight Rating; Definition

Summary: FMCSA amends the Federal Motor Carrier Safety Regulations (FMCSRs) by revising the definition of ``gross combination weight rating'' (or GCWR) to clarify the applicability of the Agency's safety regulations for single-unit trucks (vehicles other than truck tractors) when they are towing trailers, and the GCWR information is not included on the vehicle manufacturer's certification label.