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2. File:Conventional 18-wheeler truck diagram.svg - Wikipedia

   en.wikipedia.org/wiki/File:Conventional_18...

   English: Diagram showing a side view and underside of a conventional 18-wheeler semi-trailer truck with an enclosed cargo space. The underside view shows the arrangement of the 18 tires (wheels). Shown in blue in the underside view are the axles, drive shaft, and differentials. The legend for labeled parts of the truck is as follows: tractor unit

3. Car carrier trailer - Wikipedia

   en.wikipedia.org/wiki/Car_carrier_trailer

   Like other semi-trailers, most commercial car carrier trailers attach to the tractor using a fifth wheel coupling. Trailers can either be enclosed, possessing walls like a conventional box trailer, which affords the shipped vehicles more protection at the cost of lower capacity; or open, as in the commonly seen skeletal tube steel design, which ...

4. Semi-trailer truck - Wikipedia

   en.wikipedia.org/wiki/Semi-trailer_truck

   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 ...

5. Bogie - Wikipedia

   en.wikipedia.org/wiki/Bogie

   In trucking, a bogie is the subassembly of axles and wheels that supports a semi-trailer, whether permanently attached to the frame (as on a single trailer) or making up the dolly that can be hitched and unhitched as needed when hitching up a second or third semi-trailer (as when pulling doubles or triples).

6. Semi-trailer - Wikipedia

   en.wikipedia.org/wiki/Semi-trailer

   The combination of a semi-trailer and a tractor truck is called a semi-trailer truck (also known simply as a "semi-trailer", "tractor trailer", or "semi" in the United States). [1] A large proportion of a semi-trailer's weight is supported by a tractor unit, or a detachable front-axle assembly known as a dolly, or the tail of another trailer ...

7. Glossary of the American trucking industry - Wikipedia

   en.wikipedia.org/wiki/Glossary_of_the_American...

   Often a straight truck, semi-trailers are also common. Flatbeds and refuse container trucks can often "dump", but are rarely called that. [3] Eighteen-wheeler This term is derived from the number of tires that the typical OTR tractor-trailer configuration has. See also semi-truck. Semi-truck