Differences Between Semi-trailers

Different from full trailers, semi-trailers have their axles positioned behind the vehicle's center of gravity (when evenly loaded) and are equipped with a hitch that transmits horizontal or vertical forces to the tractor. Full trailers typically have two axles, while semi-trailers have one. A semi-trailer is a vehicle that is unpowered and shares its load with the main vehicle, relying on the main vehicle to pull it along.
Simply put, a full trailer is connected to the truck in front with a hook. A semi-trailer is connected to the tractor's fifth wheel via a tow pin. A common container transport truck is a typical semi-trailer, with the loading portion at the rear being the semi-trailer.
They also differ in their intended use. Full trailers are primarily used for short-distance transport within factories, ports, docks, warehouses, and other areas, while semi-trailers are primarily used for long-distance cargo transportation.