道路交通信号的可见性取决于许多因素，其中最重要的是 光的颜色、发光强度和发光强度分布。 本标准规定了灯具的颜色、发光强度和发光强度分布 200毫米道路交通信号灯。太阳幻影的严重问题，会影响正确的 标准中包括对光的识别。 有关道路交通信号灯颜色的参考文件已详细说明。

The visibility of a road traffic signal depends on many factors, the most important of which are the colour, luminous intensity and luminous intensity distribution of the light. This Standard deals with the colour, luminous intensity and luminous intensity distribution for 200 mm road traffic signals. The serious problem of sun phantom, which can affect the correct recognition of the light, is included in the Standard. Reference documents relating to the colour of road traffic signals are detailed.