| Green Line | |
|---|---|
&sq=&lang=&file=File:Chennai_Metro_Rail_at_Koyambedu.JPG) A metro train on the Green line entering Koyambedu station | |
| Overview | |
| Status | Fully Operational |
| Locale | Chennai |
| Termini | |
| Connecting lines | Operational (2): Green Line Chennai MRTS Upcoming (3): Purple Line Red Line Orange Line |
| Stations | 17 |
| Service | |
| Type | Rapid transit |
| System | Chennai Metro |
| Operator(s) | Chennai Metro Rail Limited |
| Depot(s) | Koyambedu |
| Rolling stock | Alstom |
| History | |
| Opened | 25 September 2015 |
| Technical | |
| Line length | 22 km (14 mi) |
| Number of tracks | 2 |
| Character | 9.7 km (6.0 mi) Underground 12.3 km (7.6 mi) Elevated |
| Track gauge | 1,435 mm (4 ft 8+1⁄2 in) standard gauge |
| Electrification | 25 kV 50 Hz AC overhead catenary |
| Operating speed | 80 km/h (50 mph) |
The Green Line is one of the two operational lines of Chennai Metro apart from the Blue line. The line stretches from Chennai Central to St. Thomas Mount, covering a distance of 22 km (14 mi). The line consists of 17 stations out of which nine stations are underground and the rest are elevated or on ground level.
Planning for the metro started in 2007-08 with the construction commencing in February 2009. Testing began in 2014, and the Commissioner of Metro Rail Safety approved the operations in January 2015. On 29 June 2015, commercial operations started between Alandur and Koyambedu stations on the green line with the first underground section between Thirumangalam to Nehru Park operational on 14 May 2017, which was later extended to Chennai Central on 25 May 2018.