Shop Nilight 144 LED Strobe Traffic Advisor Light Bar Red Blue with Controller 2 in 1 Automotive Emergency Warning Flashing Police Windshield Lights Bars for Cars Tow Plow Trucks Construction Vehicles in high quality, support 2-year warranty. This emergency traffic light bar is widely used in all 12V-24V vehicles including Hazard Warning, Law Enforcement, First Responder, emergency vehicles, construction vehicles, pickup trucks, vans, trailers, UTV, ATV, construction,etc.