<P> The Kolkata Metro is a rapid transit system serving the Kolkata metropolitan area in the Indian state of West Bengal . The network currently consists of one operational line of 27.22 km from Noapara to Kavi Subhash with five other lines in various phases of construction . The Kolkata Metro was the first metro railway in India , opening for commercial services from 1984 . On 29 December 2010 , Metro Railway , Kolkata became the 17th zone of the Indian Railways , operated by the Ministry of Railways . There are 300 metro services daily carrying over 650,000 passengers making it the second busiest metro system in India . </P>
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Kolkata metropolitan area in the Indian state of West Bengal