RailRadar is a free-to-use, community-driven web platform that provides real-time train tracking and railway information in India. It was launched on 10 October 2012, as a collaboration between the Centre for Railway Information Systems and RailYatri. After being discontinued by the Indian Railways in 2013, the service was later revived by RailYatri. [1] [2] In November 2015, it used utilizing crowdsourced GPS data from passengers' smartphones to provide real-time train locations. [3]