IEC国际电工委员会：2023智能火车、地铁和有轨电车系统报告（英文版）

Travelling by train, tram or metro are favourite modes of transport for many of us: no traffic jams, no need to focus on the road ahead… we can just sit back and read a book, consult our smartphones or even fall asleep. One thing we rarely do, however, is to think about the hundreds of electrical and electronic devices and systems which enable trains, metros and trams to depart and travel to their destination safely. All these different devices and systems perform together efficiently an