A traffic cone bar, also known as a cone connecting bar or cone chain, is an essential accessory used in conjunction with traffic cones to create temporary barriers and control pedestrian or vehicular movement. Typically made of durable materials like plastic or metal, the traffic cone bar connects two or more traffic cones, forming a solid barricade or demarcating a specific area. These bars come in various lengths, allowing for flexible configuration to suit different traffic management needs. They are frequently employed in construction zones, roadworks, events, and parking lots to restrict access, mark off hazardous areas, or redirect traffic safely. 

The flexibility and ease of use of traffic cone bars make them a practical solution for establishing temporary barriers and enhancing safety in dynamic environments where quick and efficient traffic control measures are required.