Semi-trailers are divided into full trailers and semi-trailers; The total weight of the trailer borne by itself is called full trailer; Part of the total weight of the trailer is borne by the tractor, which is called semi-trailer.
Main advantages:
Compared with "integral" cars, semi-trailers can improve the comprehensive economic benefits of road transportation. The transportation efficiency can be improved by 30-50%, the cost can be reduced by 30-40%, and the fuel consumption can be reduced by 20-30%. More importantly, the use of semi-trailers can also promote the organizational form of logistics in China to a certain extent.