Chennai Metro Rail will introduce driverless trains in August, with the first trainset arriving in August followed by six more in the next two months. These trains will operate on the 26-kilometer stretch of corridor 4, connecting 28 metro stations. The elevated stretch of corridor 4, starting at Powerhouse in Kodambakkam...
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and ending at Poonamallee Bypass, is set to open in 2025. The Poonamallee depot, currently under construction, will house and maintain all trains on this corridor. A total of 138 three-car trainsets are planned for phase 2, covering 116.1 kilometers, with 70 trainsets being procured through bids last year and 32 more through a recent reopening of bids. The driverless trains will have several features, including perch seats, CCTV cameras, charging sockets, grab handles, dedicated space for wheelchair users, and LCD screens for information and entertainment. Each three-car trainset can accommodate approximately 1,000 passengers and will have a design speed of 90 km/hr and an operational speed of 80 km/hr. They will also be equipped with safety features such as obstacle detectors, train derailment detectors, and a regenerative braking system.