Delhi Metro to upgrade 70 trains on Red & Blue Lines by November 2027

In a statement, Anuj Dayal, Principal Executive Director, Corporate Communications at Delhi Metro Rail Corporation, said that DMRC has undertaken a comprehensive mid-life refurbishment (retrofit) initiative for its Blue Line trains to enhance passenger safety, comfort and overall travel experience.

“Under this initiative, the oldest Rolling Stock (RS-1) trains are being upgraded with modern technology and improved facilities to ensure they remain reliable and meet current standards,” he said.

Delhi Metro to modernise oldest Rolling Stock

So far, 31 trains have been refurbished. The refurbishment work includes major improvements to both the train interiors and systems. The interior areas, including passenger sections and driver cabins, have been repainted to restore aesthetics, and fix wear and tear from many years of use. Electrical panels have also been upgraded to enhance performance and reliability, it said.

70 Delhi Metro trains to get upgrade (Image: RITES)

Upgraded features of Delhi Metro’s oldest rolling stock

According to the DMRC, after the upgrade of its oldest trains, they will be equipped with IP-based Passenger Announcement and Passenger Information Systems (PA-PIS), CCTV systems and LCD-based Dynamic Route Maps (DRM), along with display screens.

“These systems provide real-time information about routes, current time, and expected arrival at stations. They also enable communication between passengers and train operators during emergencies,” it said.

With passenger safety as a key focus, the DMRC is installing a new fire detection system equipped with smoke and heat detectors in all coaches. It is also replacing old relays and Miniature Circuit Breakers (MCBs) with advanced units to enhance safety and ensure smoother operations.

The DMRC also introduced mobile and laptop charging points in all coaches to meet passenger needs. “New jumper cables and connectors have also been installed to support upgraded systems like PA-PIS and Fire Detection Systems as well as to accommodate future upgrades.,” it added.