Traffic lights manufacturers offer high-quality road traffic lights lighting manufacturers Branch Xu Jiang Su Kexu Electric Co., Ltd. welcome you to consult manufacturers offer high quality traffic lights, traffic lights, road lighting manufacturers Branch Xu manufacturers offer high quality traffic lights road traffic lights lighting manufacturers Branch Xu traffic lights from red , green, yellow components. A red light indicates closed to traffic, it allows the passage of green light, yellow light indicates a warning. Traffic lights are divided into: motor vehicle lights, non-motor vehicle lights, crosswalk lights, directional lights (arrow lights), driveway lights, flashing warning lights, road and railway level crossing lights. Combination lamps professional manufacturer, specializing in antique lamp manufacturers, professional manufacturer of sign posts, cylindrical landscape manufacturers offer a professional manufacturer of Chinese lamps, lamp manufacturers China, under lights manufacturers, manufacturers of high-quality solar street lights, high-quality pole factory price, high quality antique combination lamps prices, manufacturers offer high-quality road lamps, shaped landscape manufacturers, lamp manufacturers in Yangzhou China Yangzhou antique lamp price, community garden lights manufacturers, wholesale, residential landscape lights manufacturers, garden lights factory direct, Continental antique lamp price, square landscape price, high pole combination lamps manufacturers, electronic police monitoring rod manufacturers, road monitoring rod manufacturers; at the crossroads, surrounded by all hung with red, yellow, green, three-color traffic lights, it is not silent "traffic police." Traffic lights are internationally uniform traffic lights. Red stop signal, the green light is a common signal. Intersection, several directions to the car are brought together here, and some want to go straight, and some want to turn and in the end so who go first, which is to obey the command of traffic lights. Red light, line, or turn left at the situation does not hinder pedestrians and vehicles, allowing vehicles to turn right; green light to allow the vehicle straight or turning; the yellow light, stop at the intersection stop line or crosswalk lines within, has continued to pass; Huang When the light flashes, warning vehicle safety. The first time only red, green, two colors, and later, after improvements, the addition of a light yellow light, red light means stop, yellow light indicates ready, the green light indicates that traffic. The reason for using these three colors, one is the three primary colors, other colors are also raised on the basis of this out, on the other hand, with these three colors as traffic signals and also people's visual structure and psychological response. Human retina contains three types of cone photoreceptor cells and the rod, the rod cells are particularly sensitive to yellow light, respectively to red, green and blue three most sensitive cone cells. Because of this visual structure, the people most likely to distinguish red and green. Although the yellow and blue are easy to distinguish, but because of the eye on the blue-sensitive photoreceptor cells less, so to distinguish color, or red, green better.