Yellow Line at One: How Namma Metro Is Racing to Put All 15 Trains on Track by August 11

When Namma Metro's Yellow Line launched on August 11, 2025, it ran with seven trains and a 10-minute headway. Less than a year later, BMRCL is sprinting to field a full fleet of 15 trains by the line's first anniversary — a push that will cut peak-hour waits from seven minutes today down to five minutes or less, serving the 19.75-km corridor from Bommasandra all the way to RV Road.

From 7 trains at launch to 13 — and counting

The Yellow Line opened on August 11, 2025, inaugurated by Prime Minister Narendra Modi the evening before and thrown open to the public the next morning at IIIT-Bangalore. BMRCL had ordered 15 trains from Titagarh Rail Systems (TRSL) for the route, but manufacturing and testing timelines meant the line started with only seven six-coach trainsets in service. Fleet additions came steadily through late 2025 and into 2026 — by June 16, 2026, the 13th train arrived at Hebbagodi depot, where it is currently undergoing assembly, static inspection, and the mandatory 750-kilometre dynamic testing run that every new trainset must complete during nighttime hours before entering passenger service.

That testing protocol is non-negotiable for safety reasons, but it does mean each new arrival takes a few weeks to become revenue-service ready. Currently, 10 of the 13 received trains are in active operation on the Yellow Line, providing a peak-hour frequency of seven minutes — a significant improvement over the 10-minute wait at launch, but still short of the five-minute cadence that will make the Yellow Line feel truly metro-grade at rush hour.

The final two: Titagarh to dispatch by early July

Trains 14 and 15 are being assembled at Titagarh Rail Systems' facility near Kolkata. BMRCL expects both units to be dispatched by early July 2026, completing the Yellow Line's full contractual order. Once delivered to Hebbagodi, each will need to clear the 750-km testing requirement before it can carry passengers — putting the realistic in-service date for the final pair around late July to early August.

BMRCL has set a clear target: all 15 trains operational by August 11, 2026 — the Yellow Line's first birthday. Of those 15, 13 will be in active service while 2 are maintained as reserve stock for contingencies and scheduled maintenance, following standard metro fleet management practice. With 13 active trains, the peak-hour headway on the Yellow Line is projected to drop to five minutes or less, making it competitive with the Purple and Green Lines at their busiest.

What five-minute frequency means for South Bengaluru commuters

The Yellow Line is the lifeline for South Bengaluru — running through Bommasandra, Electronic City, Hebbagodi, Begur Road, Hosa Road, Kudlu Gate, JP Nagar 4th Phase, Jayadeva Hospital, and into the city core at RV Road and Central Silk Board. The corridor sits in one of the most IT-dense parts of the city, and its riders are among Bengaluru's most habitual peak-hour commuters. A five-minute headway means no more watching a train leave and resigning yourself to a seven-minute wait — it means a metro that you can walk to the platform for, confident the next one is seconds away.

The completion of the Yellow Line fleet also frees up Titagarh's production line to focus on rolling stock for the Green and Purple Lines, where fleet expansions are also in the pipeline. For NammaConnect users, this August milestone is one to watch: if BMRCL delivers on the timeline, the Yellow Line at one year old will be running the most frequent service in its history.