South India's first AC EMU chugged along the Chennai Beach-Chengalpattu corridor, marking yet another significant episode in the suburban rail network that is often hailed by many as the transport lifeline of the city and its neighbourhoods.
This is the first such service in southern India, an official said.
The Chennai division of Southern Railway operates the service.
The train is equipped with more features than the regular EMU rakes, such as automatic doors and passenger information system.