The network

6 stations are built but passed without stopping until they open.

Change at Alapakkam (Red), Karambakkam (Red), Valasaravakkam (Red), Alwarthirunagar (Red), Vadapalani (Green).

Poonamallee Bypass to Porur Junction: up to 80 km/h, the trains' operating speed.

Porur Junction to Vadapalani: up to 40 km/h, the limit reported in May 2026.

3.75 km of Arcot Road double-decker between Alapakkam and Alwarthirunagar: Line 4 on the lower deck, the Red Line above.

Change at Central (Green), Thousand Lights (Purple), Nandanam (Yellow), Alandur (Green, Red).

Change at Central (Blue), Kilpauk (Purple), Thirumangalam (Red), Koyambedu (Red), Vadapalani (Yellow), Alandur (Blue, Red), St. Thomas Mount (Red).

Under construction. Ridden as a preview on the real track: every station is a stop, timings are illustrative.

Change at Madhavaram Milk Colony (Red), Kilpauk (Green), Thousand Lights (Blue), Thirumayilai (Yellow), Sholinganallur (Red).

Under construction. Ridden as a preview on the real track: every station is a stop, timings are illustrative.

Change at Vadapalani (Green), Nandanam (Blue), Thirumayilai (Purple).

Under construction. Ridden as a preview on the real track: every station is a stop, timings are illustrative.

Change at Madhavaram Milk Colony (Purple), Thirumangalam (Green), Koyambedu (Green), Alwarthirunagar (Yellow), Valasaravakkam (Yellow), Karambakkam (Yellow), Alapakkam (Yellow), Alandur (Blue, Green), St. Thomas Mount (Green), Sholinganallur (Purple).

3.75 km of Arcot Road double-decker between Alapakkam and Alwarthirunagar: Line 4 on the lower deck, the Red Line above.