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  2. Tow hitch - Wikipedia

    en.wikipedia.org/wiki/Tow_hitch

    The trailer tongue (North America) or coupling (outside North America) slips over a trailer hitch ball attached to a receiver hitch mount or integral with the hitch. A larger, heavy-duty gooseneck ball size: 3 in (76.2 mm) is typically used for towing greater than 10,000 pounds (4.5 t), and this towing capacity falls outside of the scope of SAE ...

  3. Fifth-wheel coupling - Wikipedia

    en.wikipedia.org/wiki/Fifth-wheel_coupling

    The fifth-wheel coupling provides the link between a semi-trailer and the towing truck, tractor unit, leading trailer or dolly. The coupling consists of a kingpin , a 2-or- 3 + 1 ⁄ 2 -inch-diameter (50.8 or 88.9 mm) vertical steel pin protruding from the bottom of the front of the semi-trailer, and a horseshoe-shaped coupling device called a ...

  4. Towing - Wikipedia

    en.wikipedia.org/wiki/Towing

    Travel trailers are a familiar type of recreational vehicle Lowboys carry very heavy loads Many powerboats fit on a trailer. This section refers to the towing of a cargo-carrying device behind a truck or car. Most trailers fit into one of three categories: Small trailers that attach to cars and small trucks (SUVs, minivans, etc.):

  5. Roadrailer - Wikipedia

    en.wikipedia.org/wiki/Roadrailer

    This was a modern up-date of Chesapeake & Ohio Railway's RoadRailers introduced in 1955. [1] [2] The railroad wheelsets attached to the aft portion of the trailer were lowered pneumatically by activating a control valve on the left rear of the trailer. To transfer from highway mode to rail mode, the trailer driver would position the trailer ...

  6. Glossary of the American trucking industry - Wikipedia

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

    A specialized trailer or truck/trailer combination used for transporting passenger vehicles. [38] [39] Belly dump See bottom dump. A bottom dump trailer Beverage trailer A trailer between 26 feet (7.9 m) and 29 feet (8.8 m) used primarily for the transport of beverages. Colloquially known as a sidebanger, sideloader, or route trailer. Bottom dump

  7. Haul truck - Wikipedia

    en.wikipedia.org/wiki/Haul_truck

    The WABCO 3200 was a rare example of a tri-axle haul truck configuration A medium sized haul truck, the 214-short-ton (194 t; 191-long-ton) Caterpillar 789 [1]. Most haul trucks have a two-axle design, but two well-known models from the 1970s, the 350T Terex Titan and 235T WABCO 3200/B, had three axles.