CMRL is also involved in the planning and implementation of other metro rail and monorail projects in Tamil Nadu.

[1][4] The main operational control center (OCC) is located in Koyambedu where the movement of trains and real-time CCTV footage obtained is monitored.

[13][14] Chennai Metro maintains depots at Koyambedu and Wimco Nagar, which house maintenance workshops, stabling lines, test tracks and washing plant for the trains.

[19][20][21] CMRL also undertakes other projects including the development of metro rail transport in the cities of Coimbatore, Madurai and Tiruchirapalli.

[22] It has also proposed the development of Central Square around CMRL headquarters with commercial complexes and multi-storied buildings.