Trucks, also known as trucks, are cars that are primarily used to transport goods and are used to carry goods and goods. They include dump trucks, towing trucks, off-road trucks in off-road and off-road areas, and various special-purpose vehicles. Trucks that need to be manufactured (such as airport shuttles, fire engines and ambulances, tankers, container traction trucks, etc.). It is also sometimes referred to as a vehicle that can pull other vehicles and belongs to the category of commercial vehicles. Generally can be divided into heavy and light type according to the weight of the car. Vehicles usually consist of four parts: engine, chassis, body, and electrical equipment.