本标准规定了持续时间至少为1秒的稳定信号灯和闪烁信号灯的允许颜色。适用于海上、公路、航空和铁路运输系统中使用的信号灯颜色，包括船舶、飞机、机动车辆和火车上的信号灯，其中涉及的颜色识别至关重要。本标准还可用于指导颜色的选择•车辆仪表板上的光信号灯和警告灯的颜色选择•用于监控或控制工业过程的仪表板上的光信号灯和警告灯的颜色选择•用于视觉显示终端，当识别颜色代码对显示的信息很重要时。该标准没有规定信号灯在各种运输模式下的使用方式，也没有规定与不同颜色相关的含义。 对于特定应用，还必须参考国际、区域和国家公约和法规。本标准不适用于表面颜色代码的颜色。CIE出版物39.2-1983《视觉信号用表面颜色建议》中给出了表面颜色代码的允许颜色指南。本标准已获得CIE国家委员会的批准，并取代CIE出版物2.2-1975《光信号的颜色》中的建议。本标准的背景信息可在技术报告CIE 107-1994中找到。CIE 107-1994是对CIE关于信号灯颜色的官方建议的审查。法语和德语翻译（CIE S004/F和CIE S004/D）将很快面世。

This Standard specifies the allowable colours for steady signal lights and flashing signal lights where the duration of the on period is at least one second.It is applicable to the colours of signal lights used in sea, road, air and rail transport systems including signal lights on ships, aircraft, motor vehicles and trains, where the recognition of the colours involved is essential.The Standard can also be used for guidance on the selection of the colours•of light signals and warning lights on instrument panels in vehicles,•of light signals and warning lights on instrument panels used for monitoring or control of industrial processes,• used in visual display terminals when recognition of the colour code is important to intepreting the information displayed.The Standard does not specify how signal lights should be used in the various transport modes nor does it specify the meanings to be associated with the different colours. Reference must also be made to international, regional and national conventions and regulations for the particular applications.This Standard is not applicable to the colours of surface colour codes. Guidance on the allowable colours for surface colour codes is given in CIE Publication 39.2-1983 Recommendations for Surface Colours for Visual Signalling.This Standard has been approved by the National Committees of the CIE and supersedes the recommendations made in CIE Publication 2.2-1975 Colours of Light Signals. Background information to this Standard can be found in the Technical Report CIE 107-1994 A Review of the Official Recommendations of the CIE for the Colours of Signal Lights.A French and a German translation (CIE S004/F and CIE S004/D) will soon be available.