Red-light speed cameras detect the speed of vehicles by using detectors embedded into the road surface or radar technology.
Red-light speed cameras also detect vehicles travelling over the stop line or entering the intersection after the lights have turned red. If the speed of the vehicle exceeds the legal limit, or a vehicle runs a red light, a digital picture is taken of the offending vehicle.
Red-light speed cameras operate automatically day and night.
Red-light speed cameras detect and record the speed of a vehicle by using vehicle tracking radar or electronic detectors that are embedded in the road’s surface. These detectors both accurately measure the speed of a vehicle as well as its location when the traffic lights change to red.