The design and details of the trains for Mumbai Metro Green Line 4 have been revealed, with the manufacturer providing 39 “driverless” trains featuring bicycle racks, wheelchair access, and interior airflow cooling. The rolling stock contract for Mumbai Green Line 4 Metro was awarded to a joint venture of Larsen & Toubro (L&T) and Alstom in February 2025.

The line will receive 39 driverless Metropolis trainsets to be manufactured at Alstom’s Sri City factory in Andhra Pradesh, along with Urbalis Forward CBTC signalling and five years of maintenance services.

Alstom has been commissioned to supply 234 Metropolis metro cars (39 trainsets of six cars each), a Communications-Based Train Control (CBTC) signalling system, and five years of maintenance service by Larsen & Toubro Limited, India.