Bridge guardrails refer to the protective barriers installed on bridges. Their purpose is to better prevent uncontrolled vehicles from crossing over the bridge, and they serve to prevent vehicles from being lifted, driven under, or overturned over the bridge, as well as facilitate the cleaning of bridge structures. The key installation locations are on the bridge sides, between median strips, and at intersections of pedestrian and vehicle traffic. The main burial methods include directly burying upright posts, flange connections, and integrated concrete casting. The anti-slip levels of the guardrails are: PL1, PL2, PL3, and the guardrails are designed according to the design standards provided based on the anti-slip levels.