本标准规定了铁路信号符号的一般规定、信号文字符号及信号图形符号。本标准适用于铁路信号工程设计、技术文件，亦适用于有关资料和教材。This standard specifies the general provisions of railway signal symbols, the textual signal symbols and the graphical signal symbols.This standard is applicable to the railway signal engineering designs and technical documentations, and also the relevantreference materials and teaching resources.