National Barricade is a family-owned and-operated traffic control company based in Seattle, Washington, serving the Greater Seattle area since 1951. They specialize in providing parking lot barricades, traffic control services, and equipment including barricades, delineators, highway barricades, traffic cones, and more. National Barricade has a history of innovation in the industry, introducing battery-powered flashing lights and reflective sheeting to improve safety standards. They have extensive experience in traffic control services for events like the Seattle Marathon and Seafair, emphasizing high-quality service and customer satisfaction.