On the Singapore side, more than 80 per cent of ... are filled with concrete and other parts of the track, such as the third rail, which supplies power to the trains, are installed.

The third rail system provides power to a train through a conductor kept alongside the rails, they said. “Once completed, Kolkata Metro will join Singapore, London, Moscow, Berlin, Munich and ...

The third rail system provides power to a train through a conductor kept alongside the rails, they said. "Once completed, Kolkata Metro will join Singapore, London, Moscow, Berlin, Munich and ...