Highway guardrail

The expressway guardrail comprises stand columns arranged on the outer side of an expressway, the inner sides of the stand columns are fixedly connected with blocking blocks, a guardrail plate is fixedly connected between every two adjacent blocking blocks, each guardrail plate is of a trapezoidal structure which is wide outside and narrow inside, the inner side of each guardrail plate is closed, and the outer side of each guardrail plate is open. A plurality of fins distributed at intervals are arranged in the length direction of the inner side face of the guardrail plate, an included angle is formed between each fin and the driving direction, and when a vehicle collides with the guardrail plate at a small angle and/or small impact force, the corresponding fins are collided to deform and used for absorbing small collision energy. The anti-collision device has higher impact bearing capacity, and is matched with an anti-collision block for use, so that the effective impact bearing range is larger; in addition,