What is the tractor driver's license?

A2 driver's license is a tractor, which can tow heavy and medium-sized full trailers/semi-trailers. The total weight of the trailer is called full trailer. Part of the total weight of the trailer is borne by the tractor, which is called semi-trailer. Only drivers with driver's license A2 can drive this tractor, but drivers with driver's license A 1 cannot drive this tractor.

Extended data:

Main categories of tractors:

In the market, tractors are mainly divided into two categories: full-trailer tractors and semi-trailer tractors.

1. Semi-trailer tractor: the first half of the trailer rides on the traction saddle at the rear 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 with the rear end of the tractor. The tractor only provides forward pulling force to drag the trailer, and does not bear the downward weight of the trailer.

The role of tractor:

1. Anti-skid: prevent the driving wheel from idling when the vehicle runs on slippery roads such as snow, and make the vehicle start and accelerate smoothly. Especially in snow or muddy roads, the traction control system can ensure the smooth acceleration performance and prevent the vehicle from slipping or swinging its tail due to the slip of the driving wheel.

2. Flexibility: When towing a car, the car train has good maneuverability.

3. Reliable operation: Ensure that the connection between tractor and trailer is reliable, convenient and fast.

4. Smooth: the traction can be smoothly transferred to the trailer, which has a certain buffering effect on the impact load. ?

Baidu Encyclopedia -A2 Driver's License

Baidu encyclopedia-tractor