Archive · 23 Aug 2026
Metro 4 Pit Line Inspection Completed, Diwali Launch Awaits Report
Metro 4 is a planned train line in Thane.
Safety officials have inspected an important facility called a pit line.
This facility lets workers check and repair parts underneath metro trains.
It is especially useful because the main train storage and maintenance depot is not finished yet.
The safety authority will now write a report.
MMRDA will make any changes the report recommends.
The line already passed another round of technical testing in June.
Officials hope trains can start running around Diwali or by the end of 2026.
The Commissioner of Metro Rail Safety completed its inspection of Metro 4’s pit line on the 10.5-km Gaimukh–Cadbury Junction stretch.
The Mumbai Metropolitan Region Development Authority is awaiting the safety report before making any recommended changes or seeking subsequent approvals.
The pit line will provide interim maintenance and inspection facilities because the Metro 4 car shed is not yet complete.
The corridor cleared Research Design and Standards Organisation testing in June, covering trains, signalling, safety systems and tracks.
MMRDA expects services to begin around Diwali or by the end of 2026, subject to regulatory approvals.
- Who
- The Mumbai Metropolitan Region Development Authority and the Commissioner of Metro Rail Safety are involved, with testing previously conducted by the Research Design and Standards Organisation.
- What
- The Metro 4 pit line inspection has been completed, and authorities are awaiting the safety report before final approvals and possible modifications.
- When
- The update is dated August 22, 2026; the inspection was completed a few days earlier, with service targeted around Diwali or by the end of 2026.
- Where
- The inspection covered the pit line on the 10.5-km Gaimukh–Cadbury Junction stretch in Thane, Maharashtra.
- Why
- The inspection is required to assess whether the pit line can safely support routine train maintenance while the Metro 4 car shed remains incomplete.
- Project
- Metro 4 and Metro 4A are part of the Wadala–Ghatkopar–Gaimukh corridor.
- Inspected stretch
- Gaimukh–Cadbury Junction, covering 10.5 km.
- First-phase stations
- Eight stations: Cadbury Junction, Majiwada, Kapurbawdi, Tikuji-ni-Wadi, Dongripada, Vijay Garden, Kasarvadavali and Gaimukh.
- Safety inspection
- The Commissioner of Metro Rail Safety has completed its pit line inspection.
- Earlier testing
- Research Design and Standards Organisation testing was completed in June.
- Interim facility
- The pit line will support maintenance and inspections until the car shed is operational.
- Expected launch
- Services are expected around Diwali or by the end of 2026, subject to approvals.