A traffic barrier is a safety device used on roads and highways to prevent vehicles from crossing into dangerous areas. These barriers can be made from various materials, including concrete, metal, or plastic, and are designed to absorb impact and reduce the severity of accidents. Common types include guardrails, concrete barriers, and temporary barriers used in construction zones. Traffic barriers serve multiple purposes, such as protecting pedestrians, guiding traffic, and preventing vehicles from veering off the road. They are often placed along the edges of roads, around construction sites, or in areas where there is a risk of collisions with obstacles like bridges or embankments.