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...

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...

of a tractor vehicle pulling semi-trailers Semi-trailer, a trailer with wheels at the rear end only Tractor unit (semi truck engine), the motortruck...

The Tesla Semi is a battery electric semi-trailer truck built by Tesla, Inc. since 2022. The truck is powered by three motors, and according to Tesla...

steering axles A semi end dump is a tractor-trailer combination wherein the trailer itself contains the hydraulic hoist. In the US a typical semi end dump has...

13-foot-6-inch-high (4.1 m), 53-foot-long (16.2 m) semi-trailers are commonplace. The latter, when towed as part of a tractor-trailer or "18-wheeler", carries a large percentage...

livestock Semi-trailer, a trailer without a front axle Travel trailer, or caravan, a type of recreational trailer designed to provide sleeping space Semi-trailer...

vehicle (LCV) is a semi-truck used to move road freight more efficiently than single-trailer semi-trucks. It consists of one semi-trailer or more connected...

typically comprise one of two forms: a semi-trailer pulled by a tractor unit (in the same way as a semi-trailer truck). The tractor unit may either be...

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...