Topic summary
Yellow Line (Chennai Metro)
)
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 Lighthouse and Poonamallee Bypass. 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.