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Semi-trailer truck

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How Semi-Trailer Trucks Are Made | Time for Trucks Part 1

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Minecraft Walmart Semi Trailer Truck Tutorial

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Tractor Trailer for Children | Truck Tunes for Kids | Twenty Trucks Channel | Semi Truck

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2017 Large Car Magazine Truck Show

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How to Back a Tractor Trailer

A semi-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 fifth wheel coupling (hitch), with much of its weight borne by the tractor. The result is that both the tractor and semi-trailer will have a distinctly different design than a rigid truck and trailer.