In the market, tractors are mainly divided into two categories: full-trailer tractors and semi-trailer tractors.
1. Semi-trailer tractor: The front half of the trailer is placed on the traction saddle above the rear section of the tractor, and the bridge behind the tractor bears part of the weight of the trailer.
2. Full-trailer tractor: The front end of the trailer is connected to the rear end of the tractor. The tractor only provides forward pulling force and drags the trailer, but does not bear the downward weight of the trailer.
