Plastic barriers are modular traffic control and safety devices used to manage vehicle and pedestrian movement in roadways, construction zones, industrial sites, event areas, and emergency situations. These barriers are designed to create temporary or semi-permanent separation, guide traffic flow, and restrict access to hazardous or work zones. Manufactured from high-strength, impact-resistant plastic materials, plastic barriers are lightweight for easy handling yet durable enough to withstand repeated use and environmental exposure. Many designs allow water or sand filling to enhance stability and resistance against wind or accidental impact. Equipped with reflective strips or panels for enhanced night-time visibility, plastic barriers contribute to improved safety, effective traffic control, and organized site management while supporting compliance with traffic and workplace safety requirements.