Semi-tractor Trailer Truck
A semi-tractor-trailer truck is the combination of a tractor unit and one, or more, semi-trailers to carry freight. A semi-trailer attaches to the tractor with a type of hitch called a fifth-wheel.
It is variously known as a transport truck, semi-trailer truck, tractor-trailer truck, semi-tractor truck, semi-truck, trailer truck, tractor truck, transfer truck, articulated truck, artic, single truck, semi-tractor-trailer, semi-trailer, tractor-trailer, semi-tractor, semi, trailer, tractor, big rig, eighteen-wheeler, and articulated lorry, depending on the country and region.
