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高速公路护栏的标准是啥子?

发布时间:2018-04-19 08:12 人气:

   我国高速公路预设规范里规定,其坡度和路堤高度比例在1:1到1:4之间,边沟铅直深度不充足4米就可以不安装防撞公路护栏。美国的高速公路的坡度和高度比例已经达到达1:4,有的甚至于达到达1:6,几乎是和高速公路路面没有啥子高度差,车辆一朝冲出路面很少会显露出来损害到和受伤和死亡,况且可以自行回到路面上,因为这个美国的高速公路基本没防撞。

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高速公路护栏的标准是啥子?

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