traffic light (3)

Traffic lights are signal lights that direct traffic operations, generally consisting of red lights, green lights, and yellow lights. A red light means no passage, a green light means passage is permitted, and a yellow light means a warning. Traffic signal lights are installed at road intersections and are exposed to the sun and rain every day. Once the quality of the lights is not up to standard, the air tightness and waterproofness are not up to standard, and the traffic lights are easily damaged by water and cannot operate normally, which will directly cause traffic chaos or traffic accidents. Therefore, it is necessary to test the air tightness and waterproof of the traffic lights before they leave the factory.

2022/12/18