Guardrails are safety barriers installed along roadsides, bridges, and other elevated areas to prevent vehicles from veering off the path. They are designed to absorb impact and redirect vehicles back onto the roadway, reducing the risk of accidents and injuries. Common materials used for guardrails include steel, wood, and concrete. In addition to their primary function of enhancing road safety, guardrails also help protect pedestrians and nearby structures from potential collisions. They are often placed in areas with sharp curves, steep drops, or high traffic to ensure a safer driving experience for everyone on the road.