Chennai metro map latest: Poonamallee–Vadapalani Yellow Line stations, ₹10–40 fares and train timings

Short answer: the latest addition to the Chennai metro map is the Yellow Line (Corridor 4) from Poonamallee Bypass to Vadapalani, about 15 km with 11 stations. It opened on 11 October 2026. Trains run 4–9 PM today and 7 AM–9 PM every day from 12 October, and fares are ₹10 to ₹40. Everything below comes from Chennai Metro Rail Limited's (CMRL) own press release, fare table, timetable and parking list unless another source is named.

Find your fare: pick any two stations in our Chennai Metro Yellow Line fare and timings tool. It also shows the stops, parking at your station and the next scheduled departures.

The 11 stations, in order

CMRL lists the stations from west to east as follows (P.R. 66/2026):

Between Porur Junction and Vadapalani, six stations are still being built: Alapakkam, Karambakkam, Valasaravakkam, Alwarthirunagar, Saligramam Warehouse and Saligramam. The Hindu reported that trains stop at every station from Poonamallee to Porur and then run straight to Vadapalani until those open, which may take a few more months.

Our line map in the tool is a simplified drawing of this order. It isn't an official CMRL map.

Train timings and frequency

According to CMRL's press release of 10 October:

• Sunday 11 October: trains from 4 PM to 9 PM in both directions.
• From Monday 12 October: 7 AM to 9 PM every day. The last train leaves at 9 PM from both Poonamallee Bypass and Vadapalani.
• Monday to Saturday: every 10 minutes from 8 to 11 AM and 5 to 8 PM, and every 15 minutes from 7 to 8 AM, 11 AM to 5 PM and 8 to 9 PM.
• Sundays and holidays: every 15 minutes all day, with no peak service.

The Yellow Line closes earlier than the Blue and Green lines, which run until about 11 PM according to the same CMRL timetable. If you're changing at Vadapalani late in the evening, the 9 PM cut-off is the one that matters.

CMRL hasn't published station-to-station run times. Reports before the opening (LiveChennai, MagicBricks) put the full trip at about 30 minutes, but treat that as an estimate.

Fares: ₹10 to ₹40

CMRL's fare table gives the price for every pair of stations. Some common trips on a paper QR ticket bought at the counter:

• 20% discount: CMRL gives 20% off on the NCMC Singara Chennai card and on digital QR tickets (WhatsApp +91 83000 86000, Paytm, PhonePe and the CMRL app's stored-value pass). Paper QR tickets bought at the counter don't get it (CMRL P.R. 64/2026).
• Going beyond Vadapalani: CMRL told The Hindu that fares stay unchanged and that a trip combining Phase 1 and Phase 2 is capped at ₹50, for example Poonamallee to Wimco Nagar or to Chennai Airport.

The full 11×11 chart is in the tool.

Changing to the Green Line at Vadapalani

Vadapalani is already a station on Phase 1's Green Line, which runs Chennai Central–St. Thomas Mount via CMBT and Alandur. DT Next reports that Yellow Line passengers can change there for the rest of the network.

In August, The Hindu reported that the new Phase 2 station's own entrance on Arcot Road wasn't finished. Until it opens, passengers would use a skywalk and the Phase 1 station's entrance on Jawaharlal Nehru Salai, which means a longer walk. We couldn't confirm on opening day whether the Arcot Road entrance is ready.

Parking and feeder buses

• Parking: CMRL's list from 11 October shows car parking only at Poonamallee Bypass, Kattupakkam and Thelliyaragaram. Most other stations have two-wheeler parking only, and Poonamallee Bus Stand and Porur Bypass have none. CMRL's tariff sheet (in force since 1 Feb 2025) lists the rates for Phase 2 stations including Poonamallee Bypass and Kattupakkam: for a two-wheeler, ₹10 for up to 6 hours if you travel with a CMRL or NCMC card, or ₹25 if you don't.
• Buses: MTC says buses already run past all 11 stations, and bus stops near each station have been marked. Poonamallee Bus Terminus has the most bus trips at 5,155. MTC and CMRL will decide on extra feeder routes and dedicated stops based on passenger feedback (DT Next, quoting MTC MD V.P. Jayaseelan).

What opened, and what's next

PM Narendra Modi and Tamil Nadu Chief Minister C. Joseph Vijay flagged off the line on 11 October and rode it together (ET). According to PIB, the stretch cost about ₹4,900 crore, includes a 3.7-km double-decker structure, and has signalling designed to support driverless operation. It's the first operational part of Corridor 4, which DT Next says will eventually run from Poonamallee Bypass to Lighthouse.

Next to watch are the six unfinished stations between Porur and Vadapalani, which will change both the stop pattern and the run time. We'll update this guide and the tool when CMRL announces them.