What is a traffic light?
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What is a traffic light?
Road traffic lights are a type of traffic lights used to assign effective right-of-way to conflicting traffic flows to improve road traffic safety and road capacity. It is divided into two categories: traffic control signals that give a directional signal and display a single color, such as traffic lights, and signals that indicate specific content such as pedestrians walking and stopping (indicated by arrows), and the forward direction of vehicles with symbols. . In addition to meeting the general requirements of traffic lights, signal lights should also meet the following requirements: ① The luminous surface has a certain diameter, which is divided into 200mm and 300mm, and the surface brightness should be as uniform as possible. ②Colors are red, yellow, green, and sometimes white. ③ Use measures such as hat brim to reduce the false display phenomenon caused by the oblique sunlight on the light-emitting surface of the lamp.
