Why a fail-safe signalling system fails to prevent deadly train crashes scroll.in - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from scroll.in Daily Mail and Mail on Sunday newspapers.
While Union Railway Minister Ashwini Vaishnaw has attributed change in electronic interlocking as the reason behind the tragic train accident in Odisha, a similar incident that took place in February has now come to the fore.