that the power unit is a permanent fixture, not a separable vehicle. Steering is accomplished via hydraulic cylinders that pivot the entire tractor in relation to the trailer, rather than rack and pinion steering on the front axle as in a conventional dump truck. By this way of steering, the trailer's wheels follow the same path as the front wheels. Together with all-wheel drive and low center of gravity, it is highly adaptable to rough terrain. Major manufacturers include Volvo CE, Terex, John Deere, and Caterpillar. U-shaped dump truck U-shaped dump trucks, also known as tub-body trucks, is used to transport construction waste, it is made of high-strength super wear-resistant special steel plate directly bent, and has the characteristics of impact resistance, alternating stress resistance, corrosion resistance and so on. 1. Cleaner unloading U-shaped dump truck, there is no dead angle at the corners of the cargo box, it is not easy to stick to the box when unloading, and the unloading is cleaner. 2. Lightweight The U-shaped cargo box reduces its own weight through structural optimization. Now the most common U-shaped dump is to use high-strength plates. Under the premise of ensuring the strength of the car body, the thickness of the plate is reduced by about 20%, and the self-weight of the car is reduced by about 1 ton, which effectively improves the utilization factor of the load mass. 3. Strong carrying capacity.Using high-strength steel plate, high yield strength, better impact resistance and fatigue resistance. For users of ore transportation, it can reduce the damage of ore to the container. 4. Low center of gravity The U-shaped structure has a lower center of gravity, which makes the ride more stable, especially when cornering, and avoids spilling cargo. 5. Save tires The U-shaped cargo box can keep the cargo in the center, and the tires on both sides are more evenly stressed, which is beneficial to improve the life of the tires. Dangers Collisions Dump trucks are normally built for some amount of off-road or construction site driving; as the driver is protected by the chassis and height of the driver's seat, bumpers are either placed high or omitted for added ground clearance. The disadvantage is that in a collision with a standard car, the entire motor section or luggage compartment goes under the truck. Thus, the passengers in the car could be more severely injured than would be