CHENNAI: Chennai Metro Rail Ltd (CMRL) will advance the services on the Phase-2 Yellow Line to 6am from Oct 23, following commuter feedback. Services on the 15km Corridor-4 stretch between Poonamallee Bypass and Vadapalani will operate from 6am to 9pm in both directions.Currently, services begin at 7am. The revised timings are intended to make early-morning travel towards Vadapalani and Poonamallee more convenient.From Monday to Saturday, trains will run every 10 minutes during peak hours — 8am to 11am and 5pm to 8pm. During non-peak hours, services will operate every 15 minutes, between 6am and 8am, 11am and 5pm, and 8pm and 9pm.