Chennai Metro

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The Chennai Metro is a rapid transit system serving the city of Chennai, India. It is operated by Chennai Metro Rail Limited, a joint venture between the Government of India and the Government of Tamil Nadu. As of October 2026, the network consists of three operational lines spanning 68.8 km (42.8 mi) and has 52 underground and elevated stations, making it India's fifth largest metro rail system. The system runs on standard gauge and is powered by 25 kV 50 Hz AC overhead electric lines. Plans for a metro rail system for Chennai started in 2007–08 with construction commencing in February 2009. Test runs began in 2014, and the first segment of the metro between the Alandur and Koyambedu stations on the Green Line began operations on 29 June 2015. On 21 September 2016, operations on the Blue Line commenced between Chennai Airport and Little Mount. The underground stretch from AG-DMS to Washermanpet of the Blue Line opened on 10 February 2019, completing the first phase. Additionally, The Chennai...

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