signal failure meaning in English

信号故障

The respective numbers of signalling failures of west rail and mos rail each year which resulted in disruptions in train service since their commissioning
西铁及马铁的信号系统自启用以来，每年分别发生多少次引致铁路服务受阻的故障
Whether kcrc has assessed if there is any possibility that signalling failures at certain sections of east rail , west rail or mos rail may result in a complete suspension of the train service of the three rail lines ; if it has and the assessment result is in the affirmative , of the measures taken by kcrc to prevent this from happening
九铁公司有否评估如东铁西铁或马铁的信号系统在部分路段发生故障，会否可能引致该3条铁路的列车服务全面停顿若有评估而结果显示有此可能，九铁公司有甚么措施避免这情况发生