Chennai Suburban Railway

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The Chennai Suburban Railway is a commuter rail system in the city of Chennai, Tamil Nadu, India, operated by the Southern Railways branch of Indian Railways. It is India's second largest suburban rail network in terms of route length and the third largest in terms of commuters. Around 1,000 services are operated daily between 4:00 a.m. and midnight. It is the longest suburban circular route in India covering of 235.5 km (146.3 mi). Chennai has a complex railway network. It is the third busiest suburban rail system in India after Mumbai and Kolkata. It has separate tracks for local and express trains. The system extensively uses electrical multiple units (EMUs) operating on alternating current (AC) drawn from overhead wires through the catenary system. The total system spans around 1,211.81 kilometres (752.98 mi), of which only 509.71 kilometres (316.72 mi) have dedicated dual tracks for suburban EMUs; the rest share tracks with other trains and are called mainline EMUs (MEMUs). As of...

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