In a significant development, Chennai Metro Rail has marginally improved the frequency of trains on a high-demand stretch and added additional trips during peak hours after two years.

In the 54-km phase-I and phase-I extension network with two corridors, a train is available every six minutes from Wimco Nagar to Chennai airport (corridor 1) during peak hours on weekdays.

For the stretches from Chennai Central to St. Thomas Mount (corridor 2) and Chennai Central to Chennai airport via Koyambedu (inter-corridor service), the current train frequency is 12 minutes.

Two years ago, Chennai Metro Rail identified a short loop — Washermanpet to Alandur via Guindy, a part of corridor 1 — as a high-demand route carrying hordes of working professionals and students, contributing significantly to ridership.

Consequently, it improved the frequency along this stretch, operating trains on a frequency pattern of 3-3-6 (the first train will be available in three minutes, the second in the next three minutes, and the third in the next six minutes, and so on).