Domestic small trailer is about 60 thousand: 1. You must go to a regular manufacturer to buy a trailer, otherwise you will face the risk of not getting a license; 2. Trailing Type A RV is called a traditional trailer in America, and it is a typical trailer. This RV does not have its own driving force, and it relies on tractors to move forward; 3. Trailing Type B RV is called five-wheeled trailer in America. It is huge in shape and has its own wheels. The shape of the sidecar is similar to a rectangle without the lower right corner, and the upper right corner is placed on the tractor compartment (mostly pickup trucks) through the trailer connection device placed in the tractor compartment.