但它同时又是路侧障碍物的一种，路侧净区内的标志柱对驶出路外的车辆是一个潜在的危害。
Meanwhile it is a kind of obstacles on roadside and it is a potential endanger to the run-off-road vehicles.
但它同时又是路侧障碍物的一种，路侧净区内的标志柱对驶出路外的车辆是一个潜在的危害。
Meanwhile it is a kind of obstacles on roadside and it is a potential endanger to the run-off-road vehicles.
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