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2. Semi-trailer aerodynamic device - Wikipedia

   en.wikipedia.org/wiki/Semi-trailer_aerodynamic...

   Semi-trailer aerodynamic devices are devices affixed to semi-trailers, for the purpose of reducing aerodynamic drag caused by air turbulence. The two major types of device in use are trailer skirts (or side skirts ), affixed to the underside of trailers, and trailer tails (or boat tails , or rear fairings ), affixed to the rear.

3. Trailer (vehicle) - Wikipedia

   en.wikipedia.org/wiki/Trailer_(vehicle)

   A utility trailer is a general purpose trailer designed to by towed by a light vehicle and to carry light, compact loads of up to a few metric tonnes. It typically has short metal sides (either rigid or folding) to constrain the load, and may have cage sides, and a rear folding gate or ramps.

4. 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

5. Tow hitch - Wikipedia

   en.wikipedia.org/wiki/Tow_hitch

   A tow hitch (or tow bar or trailer hitch in North America [1]) is a device attached to the chassis of a vehicle for towing, or a towbar to an aircraft nose gear. It can take the form of a tow ball to allow swiveling and articulation of a trailer , or a tow pin, or a tow hook with a trailer loop, often used for large or agricultural vehicles ...

6. 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 ...

7. Semi-trailer - Wikipedia

   en.wikipedia.org/wiki/Semi-trailer

   A tractor unit pulling a semi-trailer A truck pulling a semitrailer using a trailer dolly. A semi-trailer is a trailer without a front axle. 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]