Alstom has unveiled the first driverless trainset for Mumbai Metro Lines 4 and 4A, manufactured at its Sri City facility in Andhra Pradesh. Built in 14 months, the train is expected to reach Mumbai in December 2026, with passenger services targeted for August 2027.
The company will supply 39 trainsets comprising 234 cars, along with signalling systems and maintenance support. The trains will feature wheelchair accessibility, dedicated bicycle racks and a maximum operational speed of 80 kmph.
Before entering service, they must complete mandatory testing and safety certification. The corridor will improve connectivity between Mumbai and Thane.