| Yellow Line (Line 4) | |||
|---|---|---|---|
 A train on Yellow Line at Porur Bypass station | |||
| Overview | |||
| Native name | Mañjaḷ vazhiththadam | ||
| Status | Under Construction | ||
| Locale | Chennai, Tamil Nadu, India | ||
| Termini | Template:Stl Template:Stl | ||
| Connecting lines | Operational (3): Template:Rcb Template:Rcb Template:Rbox Upcoming (2): Template:Rcb Template:Rcb | ||
| Stations | 27 | ||
| Website | chennaimetrorail.org | ||
| Service | |||
| Type | Rapid transit | ||
| System | Chennai Metro | ||
| Operator(s) | Delhi Metro Rail Corporation[1] | ||
| Depot(s) | Poonamallee | ||
| Rolling stock | Alstom | ||
| History | |||
| Planned opening | June 2026 | ||
| Technical | |||
| Line length | 26.1 km (16.2 mi) | ||
| Number of tracks | 2 | ||
| Character | 10.1 km (6.3 mi) Underground 16 km (9.9 mi) Elevated | ||
| Track gauge | 1,435 mm (4 ft 8+1⁄2 in) standard gauge | ||
| Electrification | Template:25 kV 50 Hz overhead catenary | ||
| Signalling | CBTC Signalling System | ||
| |||
The Yellow Line or Line 4 is one of the under construction lines of Chennai Metro, stretching for 26.1 km (16.2 mi) between Template:Stl and Template:Stl. The line will consist of 27 stations, out of which nine will be underground and 18 will be at grade or elevated. The colour code of the corridor was changed from Orange to Yellow in 2025.
Planning and construction[edit | edit source]
Phase II[edit | edit source]
The construction of the first phase of Chennai Metro started in June 2009.[2] Commercial operations started on the green line in June 2015.[3][4][5] On 10 February 2019, the extension of blue line was opened, completing the first phase of the metro.[6]
In July 2016, Government of Tamil Nadu announced that the second phase would have three lines totaling 104 km (65 mi) in length with 104 stations.[7][8] Two corridors would extend from Template:Stl connecting with Siruseri and Template:Stl respectively with the third corridor connecting Koyambedu with Lighthouse. In July 2017, the state government announced an extension in Phase II, involving an extension of line four from Lighthouse up to Poonamallee with an intersection with the Madhavaram–Sholinganallur line at Alwarthirunagar. The line will extend to 26.1 km (16.2 mi) with 16 km (9.9 mi) elevated and 10.1 km (6.3 mi) underground. It will consist of 30 stations including 12 undergrounds stations.[9][10] The stations for the second phase were designed to be smaller than the existing stations operational in the first phase.[11]
On 20 November 2020, foundation stone for the second phase was laid and construction commenced.[12] In November 2022, Alstom was awarded the contract to supply metro coaches for the phase II expansion.[13] In May 2023, CMRL announced a revised plan for the second phase. As per the plan, the line will extend for 26.1 km (16.2 mi) with 27 stations.[14][15]
The second phase is estimated to cost ₹632.46 billion (US$8.9 billion) of which initially ₹47.1 billion (US$660 million) was loaned by Japan International Cooperation Agency.[9][16][17] On 14 February 2021, the Prime Minister of India announced that the government has set aside ₹630 billion (US$8.8 billion) for the construction of phase II and further extension.[18]
| Line Name | Terminals | Length (km) | Stations | Status | |
|---|---|---|---|---|---|
| rowspan="3" style="background:#Template:Rail color;|Yellow Line | Template:Stl | Template:Stl | 15.8 | 17 | Opens June 2026 |
| Template:Stl | Template:Stl | 10.3 | 10 | Under construction | |
In January 2025, Chennai Metro announced that the operations on Template:Stl to Template:Stl stretch will start in February 2026, with no intermediate stoppages at stations from Alapakkam to Saligramam.[20] But Now Possibility Start in June 2026
Phase II extension[edit | edit source]
In 2022, the state government proposed an extension plan for the fourth line from Poonamalee to Parandur, covering an approximate 43.6 km (27.1 mi).[21] Detailed Project Report (DPR) of the line was prepared and submitted to Government of Tamil Nadu which approved the line in June 2025. This extension would be implemented in 2 phases, from Template:Stl to Sunguvarchatram in first phase and then to Parandur in second phase. The DPR is currently forwarded to Government of India for final approval.[22] Another extension of the corridor eastward from Lighthouse to High Court is also being planned.[23]
| Line | Terminals | Length | Stations | Status | |
|---|---|---|---|---|---|
| rowspan="2" style="background:#Template:Rail color;|Yellow Line | Poonamallee | Sunguvarchatram | 27.9 km (17.3 mi) | 14 | DPR approved by state |
| Template:Stl | Template:Stl | 7 km (4.3 mi) | TBD | Planned | |
Stations[edit | edit source]
| colspan="7" align="center" style="background:#Template:Rail color;" | Yellow Line | ||||||
|---|---|---|---|---|---|---|
| S.No | Station Name[19] | Expected Opening[24] | Connections | Station Structure | ||
| English | Tamil | Station Type | Platform Level Type | |||
| 1 | Template:Stl | கலங்கரை விளக்கம் | December 2027 | Underground | Island | |
| 2 | Template:Stl | கச்சேரி சாலை | December 2027 | Underground | Island | |
| 3 | Template:Stl | திருமயிலை | December 2027 |  Thirumayilai (Chennai MRTS) Template:Rcb (Under Construction) |
Underground | Island |
| 4 | Template:Stl | ஆழ்வார்பேட்டை | December 2027 | Underground | Island | |
| 5 | Template:Stl | பாரதிதாசன் சாலை | December 2027 | Underground | Island | |
| 6 | Template:Stl | படகு குழாம் | December 2027 | Underground | Island | |
| 7 | Template:Stl | நந்தனம் | December 2027 | Template:Rcb | Underground | Island |
| 8 | Template:Stl | பனகல் பூங்கா | March 2027 | Underground | Island | |
| 9 | Template:Stl | கோடம்பாக்கம் | March 2027 | Kodambakkam
|
Underground | Island |
| 10 | Template:Stl | கோடம்பாக்கம் பவர்ஹவுஸ் | June 2026 | Elevated | Side | |
| 11 | Template:Stl | வடபழனி | June 2026 | Template:Rcb | Elevated | Side |
| 12 | Template:Stl | சாலிகிராமம் | June 2026 | Elevated | Island | |
| 13 | Template:Stl | சாலிகிராமம் கிடங்கு | June 2026 | Elevated | Island | |
| 14 | Template:Stl | ஆழ்வார்திருநகர் | June 2026 | Template:Rcb (Under Construction) | Elevated | Island |
| 15 | Template:Stl | வளசரவாக்கம் | June 2026 | Template:Rcb (Under Construction) | Elevated | Island |
| 16 | Template:Stl | காரம்பாக்கம் | June 2026 | Template:Rcb (Under Construction) | Elevated | Island |
| 17 | Template:Stl | ஆலப்பாக்கம் | June 2026 | Template:Rcb (Under Construction) | Elevated | Island |
| 18 | Template:Stl | போரூர் சந்திப்பு | June 2026 | Elevated | Side | |
| 19 | Template:Stl | போரூர் புறவழிச்சாலை | June 2026 | Elevated | Island | |
| 20 | Template:Stl | தெள்ளியார் அகரம் | June 2026 |  Sri Ramachandra Medical College
|
Elevated | Island |
| 21 | Template:Stl | ஐயப்பன்தாங்கல் | June 2026 |  Iyyapanthangal Bus Terminus
|
Elevated | Island |
| 22 | Template:Stl | காட்டுப்பாக்கம் | June 2026 | Elevated | Island | |
| 23 | Template:Stl | குமணன்சாவடி | June 2026 | Elevated | Island | |
| 24 | Template:Stl | கரையான்சாவடி | June 2026 | Elevated | Island | |
| 25 | Template:Stl | முல்லைத்தோட்டம் | June 2026 | Elevated | Island | |
| 26 | Template:Stl | பூவிருந்தவல்லி | June 2026 | Poonamallee Bus Terminus
|
Elevated | Side |
| 27 | Template:Stl | பூவிருந்தவல்லி புறவழிச்சாலை | June 2026 | Elevated | Side | |
§ under construction
See also[edit | edit source]
References[edit | edit source]
- ↑ Sampath, Nirupa (3 April 2025). "Chennai Metro Rail outsources phase 2 to Delhi Metro". DT Next. Retrieved 18 April 2025.
- ↑ "Work commences on Chennai Metro". Projects Today. 11 June 2009. Archived from the original on 25 August 2017. Retrieved 16 August 2010.
- ↑ "Chennai Metro one stop short of dream run". Deccan Chronicle. 31 August 2014. Archived from the original on 4 March 2016. Retrieved 6 June 2016.
- ↑ "Conditional clearance for Metro Rail". The Hindu. 28 April 2015. Archived from the original on 14 January 2016. Retrieved 7 June 2016.
- ↑ Chennai Metro Newsletter - August 2015 (PDF) (Report). Chennai Metro. 29 June 2015. Archived (PDF) from the original on 20 October 2023. Retrieved 7 June 2023.
- ↑ Simhan, TE Raja (10 February 2019). "PM Modi inaugurates Chennai Metro Rail's final leg". The Hindu Businessline. Archived from the original on 26 October 2020. Retrieved 13 February 2019.
- ↑ Sekar, Sunitha (2 August 2016). "1800 km, 180 stations: Unveiling Phase II of Metro". The Hindu. Archived from the original on 26 December 2016. Retrieved 24 January 2017.
- ↑ Sekar, Sunitha. "Detailed project report for Phase II of Metro Rail ready". The Hindu. Archived from the original on 27 December 2016. Retrieved 24 January 2017.
- ↑ 9.0 9.1 "Project status of Chennai Metro". Chennai Metro Rail Limited. Archived from the original on 26 September 2016. Retrieved 16 August 2010.
- ↑ "Metro's second phase to go up to Poonamallee". The Hindu. 20 July 2017. Archived from the original on 26 February 2020. Retrieved 1 October 2017.
- ↑ U, Tejonmayam (28 December 2016). "Chennai: Metro rail to trim stations under phase 2". The Times of India. Archived from the original on 8 February 2017. Retrieved 24 January 2017.
- ↑ "Amit Shah to lay foundation for Chennai Metro's phase II project". The Hindu. 17 November 2020. Archived from the original on 28 April 2024. Retrieved 1 December 2023.
- ↑ "Alstom wins €98 million contract to design and manufacture 78 metro coaches for Chennai Metro Phase-II" (Press release). Alstom. 11 November 2022. Archived from the original on 16 December 2023. Retrieved 1 December 2023.
- ↑ "Chennai metro scraps nine stations in phase 2". The Times of India. 14 May 2023. Retrieved 1 May 2024.
- ↑ "Phase II– S98 (Anaimalai) TBM Breakthrough at Venugopal Nagar Shaft" (PDF) (Press release). Chennai Metro Rail Limited. 7 June 2023. Archived from the original (PDF) on 2 June 2024. Retrieved 1 May 2024.
- ↑ "Phase-II Chennai metro project to cost Rs 36,000 cr". Business Standard. 2 March 2014. Archived from the original on 16 December 2023. Retrieved 1 December 2023.
- ↑ "JICA extends ODA Loan of INR 4710 Cr for Chennai Metro Rail Project Phase 2 (II)". Japan International Cooperation Agency. 21 June 2022. Archived from the original on 16 December 2023. Retrieved 1 December 2023.
- ↑ Dipak K, Dash. "Ground work for Chennai metro rail phase-2 hit". Times of India. Archived from the original on 18 February 2021. Retrieved 19 February 2021.
- ↑ 19.0 19.1 Chennai Metro rail phase II (PDF) (Report). Chennai Metro Rail Limited. Retrieved 1 May 2024.[permanent dead link]
- ↑ Sekar, Sunitha (3 January 2026). "Commissioner of Metro Railway Safety inspects Phase II trains". The Hindu. Retrieved 3 January 2026.
- ↑ "Detailed feasibility report for Chennai Metro Rail's Phase 2 extension to be ready in three months". The Hindu. 26 March 2023. Archived from the original on 28 April 2024. Retrieved 1 December 2023.
- ↑ "T.N. government gives nod to Chennai Metro Rail's Poonamallee-Parandur corridor". The Hindu. 3 June 2025. Retrieved 15 August 2025.
- ↑ "Chennai Metro Rail to conduct DPRs for extension in 2 locations". DT Next. 11 August 2025. Retrieved 15 August 2025.
- ↑ Sekar, Sunitha (4 March 2025). "By July 2026, Chennai Metro Rail will extend connectivity till Kodambakkam via double decker stretch". The Hindu. ISSN 0971-751X. Retrieved 22 March 2025.
