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2. 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 ...

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. Drawbar (haulage) - Wikipedia

   en.wikipedia.org/wiki/Drawbar_(haulage)

   The most common drawbar configuration for heavy vehicles is an A-frame drawbar at the front of a full trailer that connects to a tow coupling on a hauling vehicle [1] On heavy vehicles, the drawbar is coupled using a drawbar eye , typically of 40 mm or 50 mm diameter, connected to a bolt and pin coupling.

5. Towing - Wikipedia

   en.wikipedia.org/wiki/Towing

   [13] [14] Even when the predatory tow is stopped, if the vehicle is already hooked up to the tow truck in any fashion, the car is essentially disabled until the operator releases it, and the operator can therefore extort money from the towed car's owner. Even where towing is performed legally, and even with the car owner's request for a tow ...

6. Why You Shouldn’t Purchase Puppies From Pet Stores This ...

   www.aol.com/why-shouldn-t-purchase-puppies...

   Additionally, many breeding operations refuse rabies vaccination and other medical care to puppies, which could harm or burden the owner. Find out more about puppy mills and how to avoid ...

7. D-value (transport) - Wikipedia

   en.wikipedia.org/wiki/D-value_(transport)

   The corresponding formula for a truck and trailer combination, used to determine the required D-value of a coupling, is: T = Weight of towing vehicle including the vertical load on the fifth wheel R = Total weight of the loaded semi-trailer U = Vertical load on the fifth wheel g = Acceleration due to gravity (assumed to be 9.81 m/s 2 )