US Patent 7352278 Vehicle hazard warning lights

A vehicle hazard warning system and method are provided wherein a center high mounted rear stop light (“CHMSL”) is connected to the vehicle's 4-way emergency flasher circuit so that it flashes simultaneously with at least the vehicle's rear turn signal lights, and preferably with the front turn signal lights as well. This creates a more effective warning signal that the vehicle is a potential hazard to other vehicles approaching from the rear. The CHMSL can also be connected to automatically commence such flashing simultaneously with activated steady back up lights of the vehicle, whenever the vehicle is moving rearward.