ULEV Ultra low emissions vehicle.

Upper Coupler Load bearing surface on the underside of the front of a semitrailer. It rests on the fifth wheel of a tractor or dolly and has a downward-protruding kingpin which is captured by the locking jaws of the fifth wheel.

VIN (Vehicle Identification Number) Assigned by the manufacturer, this number is unique to each vehicle and appears on the vehicle's registration and title.

VMRS (Vehicle Maintenance Reporting Standards) Set of codes developed to facilitate computerized tracking of parts and labor used in equipment repair. Established and maintained by the American Trucking Associations.