When a train loses its power supply, the lighting and air-conditioning become
inoperative. Why does it still safe under the situation?
In the event of loss of train power supply, though the normal lighting and air-conditioning
become inoperative, the emergency lighting and ventilation fans within the train
will continue to operate with power supplying from the standby batteries. Thus,
safety of passengers inside the train is safeguarded. In the meantime, the railway
corporation will arrange to resume power supply or push/pull the incident train
to the nearest station for detrainment.