16 October,2026 08:10 AM IST | Mumbai | Rajendra B. Aklekar
The first of 39 six-car driverless trainsets for Mumbai Metro Lines 4 and 4A, connecting Wadala to Kasarvadavali in Thane, was unveiled on Thursday. Pics/By Special Arrangement
The first of 39 six-car driverless trainsets for Mumbai Metro Lines 4 and 4A, connecting Wadala in central Mumbai to Kasarvadavali in Thane, was unveiled on Thursday. The train is expected to arrive in Mumbai in the first or second week of December 2026. However, with a dedicated carshed for the corridor at Mogharpada not yet available, the trains will be stationed at two existing depots - Mandale near Mankhurd and Kasheli on Metro Line 5.
Train manufacturer Alstom expects to ship the first trainset by November end. The journey to Mumbai is expected to take seven to 10 days.
Design: Alstom engineering centre, Bengaluru
Manufacturing: Sri City, Andhra Pradesh
Propulsion systems: Coimbatore, Tamil Nadu
Bogies: Savli, Gujarat
Alstom said the trainsets had been engineered and built within a record 14 months. The fleet will comprise 234 metro cars configured into 39 six-car trainsets, supplied under an integrated systems contract awarded to Larsen & Toubro by the Mumbai Metropolitan Region Development Authority (MMRDA).
In the absence of a dedicated depot for Line 4 (Wadala-Kasarvadavali), the first 20 trainsets will be parked at Mandale depot, which can accommodate more than 72 rakes. The remaining 19 will be stationed at Kasheli depot on Metro Line 5, which has a direct connection to Line 4.
The arrangement is intended to accommodate all 39 trainsets planned for the 35.3-km corridor, which will have 32 stations. The corridor is also known as the Green Line.
Under the Make in India initiative, the trains have been designed at Alstom's engineering centre in Bengaluru and are being manufactured at its Sri City facility in Andhra Pradesh. Propulsion systems are being produced in Coimbatore, Tamil Nadu, while bogies are being manufactured at Savli, Gujarat.
Alstom will also provide five years of FlexCare Perform maintenance covering all 234 metro cars and the signalling system.
Route: Wadala-Kasarvadavali
Length: 35.3 km
Stations: 32
Fleet: 39 six-car trainsets, comprising 234 cars
Train model: Alstom Metropolis
Operation: Driverless, Grade of Automation 4
Maximum safe speed: 90 kmph
Operational speed: 80 kmph
Mandale depot, near Mankhurd
. First 20 trainsets
. Capacity for more than 72 rakes
Kasheli depot, on Metro Line 5
. Remaining 19 trainsets
. Direct connection to Metro Line 4
What's missing? A dedicated depot for Line 4 at Mogharpada is not yet available.
Designed for a maximum safe speed of 90 kmph and an operational speed of 80 kmph, the Alstom Metropolis trains will feature airflow-based cooling, wheelchair accessibility and dedicated bicycle racks to support last-mile connectivity. Alstom said the bicycle racks would be a first for the company's trains in India.
The trains will also feature electrical braking and cybersecurity measures. Their design follows Alstom's Eco-design approach, with materials selected keeping fire-safety requirements and environmental considerations in mind.
Presenting the first trainset at Sri City, Olivier Loison, managing director of Alstom India, said the project marked the company's continued partnership with Mumbai's metro network and its collaboration with L&T to support MMRDA's expansion plans.
"Today is a proud moment for us at Alstom to be showcasing the first trainset at a record time," Loison said, adding that the company expected its technology to deliver a world-class travel experience.
Signalling: Urbalis Forward Communications-Based Train Control (CBTC)
Automation: Grade of Automation 4, enabling driverless operation
Operations control centre: Mandale depot
Backup control centre: Mogharpada
Maintenance: Five-year FlexCare Perform contract covering all 234 cars and the signalling system
The signalling system will manage train intervals and safety.
