The height of a semi-trailer is generally around 1.5 meters. National regulations require that the overall height after loading should not exceed 4 meters. The height of the semi-trailer itself usually depends on the height of the tractor's fifth wheel. Other information about semi-trailers is as follows: 1. Features: Compared to "single-unit" vehicles, semi-trailers can better improve the comprehensive economic benefits of road transportation. Transport efficiency can be increased by 30-50%, costs can be reduced by 30-40%, and fuel consumption can be decreased by 20-30%. More importantly, the use of semi-trailers can also promote the organizational form of logistics in China to a certain extent. 2. Uses: Semi-trailers are mainly used to transport large, indivisible goods, such as excavators, etc. The fence-type is more suitable for transporting fresh goods, such as vegetables, fruits, etc. The van-type is more suitable for transporting bulk goods and moisture-sensitive valuable goods. 3. Differences: Unlike full trailers, semi-trailers have their axles placed behind the vehicle's center of gravity and are equipped with a coupling device that can transmit horizontal or vertical forces to the tractor. Generally, full trailers have two axles, while semi-trailers have one axle. A semi-trailer refers to a vehicle that has no power of its own and relies on the tractor for movement and support. 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 kingpin. A common container transport vehicle is a typical semi-trailer train, where the rear loading part is the semi-trailer.
