Commercial Motor Vehicle
A commercial motor vehicle is a vehicle used in business that meets legal criteria based on factors such as weight, passenger capacity, or hazardous cargo. Tractor-trailers, certain buses, and some delivery vehicles can qualify. Federal and state rules may govern driver qualifications, service hours, inspections, maintenance, records, and insurance. Whether a vehicle meets a particular definition depends on the law being applied, so the vehicle and trip records matter in an investigation.