Highway guardrails can absorb collision energy through self deformation or vehicle climbing, and then change the direction of vehicles to prevent vehicles from driving out of the road or entering the opposite lane, and then greatly reduce the harm to the road. According to the deformation degree after collision.
Guardrails can be divided into rigid guardrails, semi-rigid guardrails and flexible guardrails. The main representative ways are concrete guardrails, wavy guardrails and cable guardrails.
