Strange as it may seem cycling is banned by the government of West Bengal on almost all the main thoroughfares in Calcutta (Kolkata) in comparison please see the following
http://www.hindustantimes.com/mumbai-news/in-mumbai-rent-bikes-at-thane-cycles-stands-pedal-from-home-to-office-daily/story-H4qaK4CPoi9FQPJKakNKaP.html