A traffic barrier is a safety device used on roads to prevent vehicles from crossing into dangerous areas, such as oncoming traffic or hazardous zones. These barriers can be made from various materials, including concrete, metal, or plastic, and are designed to absorb impact and minimize damage during accidents. Common types include guardrails, concrete barriers, and traffic cones. Traffic barriers are often placed in locations like highway medians, construction zones, and pedestrian areas to enhance safety for both drivers and pedestrians. They help guide traffic flow and reduce the risk of collisions, making roads safer for everyone.