CHENNAI (Metro Rail News): Chennai Metro progressed as Chennai Metro Rail Limited (CMRL) conducted a trial run on Corridor 4 of Chennai Metro Phase 2 which spans 26.1 km from Light House to Poonamallee Bus Depot covering 28 stations.
CMRL conducted a trial run on the 5.5 km stretch of Chennai Metro Phase 2’s Corridor 4. The trials were initiated from Porur Junction to Vadapalani. The train departed around 11.15 am from Porur and reached Vadapalani at 12.10 pm on 11 January 2026.
Earlier in June 2025, CMRL also conducted trials on the 10 km Downline stretch of Line 4 which connects Porur Junction Metro Station to Poonamalle Bypass Metro Station through 10 stations.
Phase 2 of the Chennai Metro spans 118.9 km and consists of three new metro corridors.
| Line | Route | Elevated Length | Underground Length | Total Length |
| Line 3 ( Purple Line) | Madhavaram – SIPCOT 2 | 19.1 km | 26.7 km | 45.8 km |
| Line 4 (Orange Line) | Light House – Poonamallee Bus Depot | 16 km | 10.1 km | 26.1 km |
| Line 5 (Red Line) | Madhavaram – Sholinganallur | 41.2 km | 5.8 km | 47 km |
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