An overweight vehicle driving on the road, in case of emergency braking distance is far, it is easy to cause traffic accidents.
Second, the damage of heavy vehicles to roads is also relatively serious. For roads newly built in many places, heavy vehicles have been passing through for a long time, and there will be potholes on the roads before long.
三 很多车辆都是能装多少货就装多少货，特别是一些渣土车，超重特别严重，跑一趟路撒一趟路，对环境造成污染，更是安 全隐患。
Third, many vehicles can load as many goods as they can, especially some muck trucks, which are very overweight. If they go on the road, they will pollute the environment, which is also a potential safety hazard.
四 汽车车身约占汽车总质量的30％，空载情况下，约70％的油耗用在车身质量上。因此，车身变轻对于整车的燃油经济性、车辆控制稳定性、碰撞安 全性都大有裨益
4. The car body accounts for about 30% of the total mass of the car. Under no-load condition, about 70% of the fuel consumption is spent on the body mass. Therefore, the lighter body is beneficial to the fuel economy, vehicle control stability and crash safety of the whole vehicle
五 降低汽车自身重量可以提高输出功率、降低噪声、提升操控性、可靠性，提高车速、降低油耗、减少废气排放量、提升安 全性。
Fifthly, reducing the weight of the car can improve the output power, reduce the noise, improve the controllability and reliability, improve the speed, reduce the fuel consumption, reduce the emission and improve the safety.
Six research figures show that if the vehicle weight is reduced by 10%, the fuel efficiency can be increased by 6% - 8%; if the rolling resistance is reduced by 10%, the fuel efficiency can be increased by 3%; if the transmission efficiency of axle, transmission and other devices is increased by 10%, the fuel efficiency can be increased by 7%.
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