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A semi-trailer truck, more commonly called a semi truck, is the combination of a tractor unit and one or more semi-trailers to carry freight.
A tractor unit is a characteristically heavy-duty towing engine that provides motive power for hauling a towed or trailered load.
A semitrailer is a trailer without a front axle.
Tractor Trailer for Children | Kids Truck Video - Semi Truck by twentytrucks
It is variously known as a transport in Canada; semi or single in Australia; semi, tractor-trailer, big rig, or eighteen-wheeler in the United States; and articulated lorry, abbreviated artic, in Britain and Ireland.
Australia, officially the Commonwealth of Australia, is a country comprising the mainland of the Australian continent, the island of Tasmania and numerous smaller islands.
An articulated vehicle is a vehicle which has a permanent or semi-permanent pivot joint in its construction, allowing the vehicle to turn more sharply.
Transport or transportation is the movement of people, animals and goods from one location to another.
The Smallest (Drivable) Freightliner Semi-Trailer Truck You'll Ever See by DEBOSS GARAGE
A semi-trailer attaches to the tractor with a fifth wheel hitch, with much of its weight borne by the tractor.
The fifth-wheel coupling provides the link between a semi-trailer and the towing truck, tractor unit, leading trailer or dolly.
The result is that both tractor and semi-trailer will have a distinctly different design than a rigid truck and trailer.
