Traffic guardrail is a kind of traffic safety facility which is set on the outside of shoulder, traffic partition belt and pedestrian teeth. The collision energy can be absorbed by self-deforming or vehicle climbing, which can change the direction of the vehicle, prevent the vehicle from crossing the exit or entering the alignment lane, and minimize the injury to the passengers.
Roadside guardrails are used to protect vehicles and people inside them from collisions with natural or artificial objects located on the side of the road. It is important to note that a vehicle crashing into a traffic barrier may damage both the vehicle/passenger and the barrier itself. Traffic barriers represent a compromise between the two considerations, since the damage caused by crashing a barrier is usually less serious than that caused by crashing a component behind the barrier. In addition to protecting vehicles, traffic barriers are also used to shield pedestrians, maintenance/construction personnel, or cyclists from uncertain traffic. In its most basic form, traffic barriers are designed to prevent vehicles leaving the lane from hitting fixed objects. The guardrail first blocks an accident vehicle and then changes its direction. Because of the variability of vehicle impact and the destructive effect at high speed, comprehensive full-scale destructive test should be introduced to ensure the safety and reliability of the traffic guardrail to be used.
There are many sizes and shapes of guardrails that can be used. The choice of guardrail type depends on a variety of factors, including the environment of the highway, speed and traffic.
The functions of traffic barriers are as follows:
One is to prevent overturning accidents caused by vehicles rushing out of the road, especially the traffic barriers located in mountain bends and dangerous lanes. For motorists, they can draw sufficient attention in the distance and make them alert. They can also guide the drivers'sight and help them operate correctly when passing.
Secondly, it can prevent frontal collision of the opposite car, and prevent the same car from scraping and hanging.
Thirdly, it can prevent vehicles from colliding with pedestrians and pedestrians from crossing the road at will.
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