GB/T 20149-2006
ActiveRoad traffic lights - Photometric properties of 200mm roundel signals
道路交通信号灯 200mm圆形信号灯的光度特性
Application Summary AI generated
This standard specifies the photometric properties, including luminous intensity distribution and color requirements, for 200mm diameter roundel road traffic signals. It is applied in the design, manufacturing, and testing of traffic signal heads used at intersections and pedestrian crossings in China. The standard ensures consistent visibility and safety performance for drivers and pedestrians under various ambient lighting conditions.
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Transparency note: The application summary and key sentences on this page were automatically generated by AI from the standard's original text. This content has not been human-verified and should not be used for compliance or regulatory purposes. Always refer to the official standard document from the issuing authority.