Kolkata Metro Railway is the first underground metro railway in India. It extends from Dum Dum near Netaji Subhash Chandra Bose International Airport
, the busy north south axis of Kolkata
, over a length of 17 km.
There are 17 stations (15 underground, 1 elevated and 1 on surface) on the way at about one km apart. The stations have 160 m long platforms designed for 8-car-trains. Multi ride tickets are available for journeys.