道路护栏的主要作用
Main functions of road guardrail
道路护栏的主要作用道路护栏的主要作用道路护栏的主要作用道路护栏的主要作用：
Main function of road guardrail main function of road guardrail main function of road guardrail main function of road guardrail:
一是能够阻止车辆驶出路外，或阻止失控车辆穿越中央分隔带驶入对向车道。
First, it can prevent vehicles from driving out of the road or out of control vehicles from crossing the central separation belt into the opposite lane.
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二是车辆碰撞防护栏的运动轨迹应能圆滑过渡，使车辆回到正常行驶方向，并减少二次事故的可能性。
Second, the movement track of the vehicle collision guard shall be able to make a smooth transition, so as to return the vehicle to the normal driving direction and reduce the possibility of secondary accidents.
三是一旦失控车辆与护栏发生碰撞时，能减弱对司机和乘客的损伤。
Third, once the runaway vehicle collides with the guardrail, it can reduce the damage to the driver and passengers.
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四是机的视线，能清晰地看到道路前进方向和道路轮廓。
Fourth, the line of sight of the machine can clearly see the direction of the road and the outline of the road.