differentiate
Different from the full trailer, the semi-trailer is a trailer whose axle is placed behind the center of gravity of the vehicle and equipped with a coupling device that can transmit horizontal or vertical force to the tractor! Usually, a full trailer has two axles and a semi-trailer has one axle. Semi-trailer refers to a vehicle driven by a main vehicle with the same load without power. There are also differences in use. Full trailers are mainly used for short-distance transportation in factories, ports, docks, warehouses and other fields, while semi-trailers are mainly used for long-distance transportation of goods.
Matters needing attention
When turning, pay attention to whether there are pedestrians in the blind area, especially those riding battery cars, who suddenly appear silently. Be sure to check the tires before going out. When reversing, the direction is opposite, so you should play slowly and return slowly, and the range should not be too large. Don't panic when you are in trouble. If you go out, it is necessary to check the vehicle, including: the axle screw transmission, screw extraction horn, lighting and tire pressure, which are all necessary. These are the places where the accident happened.