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Conventional style cab tractor A cab-over semi-tractor Tractor with an end-dump trailer A FAW semi-trailer truck in China A semi-trailer truck (also known by a wide variety of other terms – see below) 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. Other terms There are a ...
A lowboy (low-loader in British English, low-bed in western Canada and South Africa or float in Australia and eastern Canada) is a semi-trailer with two drops in deck height: one right after the gooseneck and one right before the wheels. This allows the deck to be extremely low compared with other trailers.
The first semi-trailer is connected to the power unit using the tractor's fifth wheel coupling while the converter dolly, already attached to the second semi-trailer, is connected to the first semi-trailer with a drawbar. In Australian English, the tractor unit is called a "prime-mover", and the combination of a prime-mover and trailer is known ...
The new X series of Western Star trucks includes; 47X, 48X (Australia only), 49X and 57X. The 47X is the entry-level model, used mostly for vocational purposes, such as adding a dump bed or cement mixer. The 47X can also be used with a standard fifth wheel connector to tow standard trailers.
Peterbilt 386 sleeper-cab–style commercial 6×4 tractor unit. A tractor unit, also known as a truck unit, lorry unit, power unit, prime mover, ten-wheeler, semi-tractor, semi-truck, semi-lorry, tractor cab, truck cab, lorry cab, big rig tractor, big rig truck or big rig lorry or simply a tractor, truck, lorry, semi, big rig or rig, is a characteristically heavy-duty towing engine that ...
The M15A2 was the trailer that the M123 was intended to tow. It had a higher load plate and larger coupling pin than a standard semi-trailer. Early M123 had a larger fifth wheel mounted above the frame rails, but as more standard trailers were used, the M123C and all following models had lowered fifth wheels.
Peterbilt 386 tractor, a popular tractor unit for pulling semi-trailers. Heavy trucks are heavier than medium trucks. They weigh between 26 001 to over 33 000 lb (11 794 to over 14 969 kg). There is no higher on-road classification. Many heavy trucks listed are also made in medium duty versions: Concrete transport truck (cement mixer) Mobile ...
2015 Peterbilt 388 with car hauler trailer. A car carrier trailer, also known as a car-carrying trailer, car hauler, or auto transport trailer, is a type of trailer or semi-trailer designed to efficiently transport passenger vehicles via truck. Modern car carrier trailers can be open or enclosed.