Road transport (British English) or road transportation (American English) is the transport of passengers or goods on roads.
The first methods of road transport were horses, oxen or even humans carrying goods over dirt tracks that often followed game trails. As commerce increased, the tracks were often flattened or widened to accommodate the activities. Later, the travois, a frame used to drag loads, was developed. The wheel came still later, probably preceded by the use of logs as rollers. Early stone-paved roads were built in Mesopotamia and the Indus Valley Civilization. The Persians later built a network of Royal Roads across their empire.
A tow hitch (or tow bar) is a device attached to the chassis of a vehicle for towing or a towbar to an aircraft nose gear, or paired main gears. It can take the form of a tow ball to allow swiveling and articulation of a trailer, or a tow pin and jaw with a trailer loop—often used for large or agricultural vehicles where slack in the pivot pin allows similar movements. Another category is the towing pintle used on military vehicles worldwide.