Crash barriers, also known as guardrails, are safety installations designed to prevent vehicles from veering off the road or colliding with obstacles. They are typically made of steel, concrete, or plastic and are placed along highways, bridges, and sharp curves. Their primary purpose is to minimize the risk of accidents and protect both drivers and pedestrians. These barriers work by absorbing the impact of a vehicle and redirecting it back onto the roadway. By doing so, they help reduce the severity of crashes and can save lives. Proper installation and maintenance of crash barriers are essential for ensuring their effectiveness in enhancing road safety.