The front and rear underrun protections can effectively protect passenger cars from inserting under trucks, rational energy absorption characteristics can improve impact compatibility.
前、后下部防护装置能有效地防止轿车钻入，合理的能量吸收特性可改善载货汽车与轿车的碰撞相容性。
2
Therefore, the research on collision characteristics of motor vehicles and trailers rear underrun protection for improving the safety performance of automobile collision is of great significance.