A signal mix-up and interlocking error led to a near-collision at Mumbai CSMT on Tuesday, after a Badlapur-bound local train was cleared onto a track already occupied by a Khopoli-bound service. The train was brought to a halt just 130 metres short after safety systems intervened.

Preliminary findings indicate a mix-up between signals S-48 and 27 at the CSMT approach, along with possible loose ends linked to ongoing 15-car platform extension work. Officials said an interlocking error allowed the “home signal” to clear for a route leading to an occupied platform line.