第14题:[简答题]The signalling/signaling system of an HSR is mainly composed of basic outdoor signallingtching and commanding system (TDCS), centralized signalling monitoring system (CSM), etc. 参考答案:高速铁路信号系统主要由信号室外基础 设备、联锁系统、列车运行控制系统、 列车调度指挥系统、信号集中监测系统 等构成。