In order to reduce accident severity caused by crashes between vehides and barrier terminals, impact test condition and evaluation specification of re-directive crash cushion are brought out based on accident performance and referred to correlative documents in and out of China, and a new type of re-directive crash cushion which meet the evaluation specification is invented by conducting finite element analysis and full-scale impact tests. The results indicate that the re-directive crash cushion is able to absorb kinetic energy of a 1.5 ton car with 60 km/h speed in frontal impact and with 100 km/h speed in side impact. The maximum acceleration direction is 10.7 g in frontal impact and 16.1 g in side impact, and passengers are protected, and the vehicle performance keeps well after crash; The simulation result is coincident with that of test and the error between them is with in 10%.%为降低车辆碰撞护栏端部事故严重程度，根据事故形态和国内外相关标准，提出可导向防撞垫的碰撞试验条件与评价标准，采用有限元仿真和碰撞试验相结合的技术手段，开发出一种新型可导向防撞垫结构．结果表明，开发的防撞垫能防护1．5t的小型车辆以60km／h速度正面碰撞和100km／h速度侧面碰撞，车体碰撞方向加速度最大值分别为10．7g和16．1g，车辆姿态良好，对乘员形成安全保护；仿真结果和试验结果一致，误差在10％以内．
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