Chennai Metro Phase II Driverless (GoA4) Signalling
Chennai Metro Rail Limited is commissioning Grade-of-Automation-4 unattended train operation on Phase II, under a ₹1,620-crore Hitachi Rail communications-based train control (CBTC) signalling contract awarded in 2023, designed to allow 90-second headways, automatic depot train movement and platform-screen-door control, with Alstom supplying the automated trainsets. The 14.64km Poonamallee–Vadapalani stretch of Corridor 4 passed a Commissioner of Metro Rail Safety inspection in early 2026 and has since carried trial and inspection runs — including a chief minister's ride on 29 July 2026 — restricted to 25km/h and 15-minute headways, but had not opened to fare-paying passengers as of early August 2026, after at least two previously announced launch dates (February and July 2026) slipped.
📖 Terms in this entry: CBTC (communications-based train control) · Grades of Automation (GoA) · Personal rapid transit (PRT)
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1001 Smart Cities (2026). “Chennai Metro Phase II Driverless (GoA4) Signalling” — Chennai, India. The Smart City Atlas. https://1001smartcities.org/projects/chennai-metro-phase2-driverless/ (last verified 2026-08-02). Data: CC BY 4.0.
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