Safety traffic lights have an additional bar with stop marked on it, that extends perpendicular to the lights when the red light is on, thus increasing driver safety in conditions of strong sunlight

摘要

Safety traffic lights have an additional bar with stop marked on it. The bar is controlled by an electric motor so that it is synchronized with the color of the traffic lights. Thus when the lights are red the bar has a position perpendicular to the lights, while when they are yellow or green it hangs behind the lights.