Terms	Definition
Air Ride Suspension	Suspension which uses air filled rubber bags to support the load instead of steel springs. The compressed air is provided by the same tank that supplies air to the air-brake system.
Antilock Braking System	System to help drivers stay in control while braking, it is composed of computer, sensors and solenoid valves which monitor and regulate wheel speed and adjust braking force if wheel lockup is sensed.
ASOR	Regulations for the international transport of passengers by road on a charter or non-scheduled bus service.
ATOMS	An ATTAIN. Applicability in Transport and Traffic of Artificial Intelligence, a DRIVE project
Automated Vehicle Location (AVL)	Function carried out by land-based radio towers or satellites, designed to locate either stolen vehicles or vehicles for fleet management purposes.
Automatic Vehicle Identification	System connecting an on-board transponder with roadside receivers.
Bobtail	Tractor without a trailer (straight truck)
Bogey	Assembly of two or more axles, usually a pair in tandem
Bridge Formula	Formula used by governments to standardize the weight that can be put on a vehicle's axle and the distance between the axles in order for the vehicle to carry a given weight
Bumper-to-Back-Cab (BBC)	Length of a truck, measured from the front of its bumper to the back of its cab.
Bunk	Sleeping compartment mounted or attached to a truck cab
Cabotage	A road transport policy that allows drivers of commercial vehicles to apply for employment in another country
Cab-Over-Engine	Truck or tractor with the cab over the engine
Cab-to-End (CE)	Distance from back of a truck's cab to the end of its frame. Acronym: CE, CF, LP
Cartage	To carry by truck
Chassis Weight	Weight of empty truck
Container Chassis	Semi trailer that carries a shipping
Curb Weight	Weight of empty truck
Diversion and Re-consignment	Change in the destination and/or consignee, or any other instructions involving movement of the truck.
Fifth Wheel	Device attaching a tractor or dolly to a semi trailer
Headache Rack	Protective barrier mounted behind tractor's cab to prevent load from shifting forward.