Road barriers are physical structures designed to prevent vehicles from crossing into dangerous areas or to separate different lanes of traffic. They can be made from various materials, including concrete, metal, or plastic, and are often used in construction zones, highways, and areas with steep drops. Their primary purpose is to enhance safety by reducing the risk of accidents. These barriers come in different shapes and sizes, such as guardrails, concrete barriers, and traffic cones. Some barriers are temporary, used during roadwork, while others are permanent installations. Proper placement and maintenance of road barriers are crucial for effective traffic management and safety.