Chennai Metro Phase II O&M to be outsourced; tunnelling works commence on Phase II, India July 21, 2024 | Asia Pacific News, News Chennai Metro Rail Limited (CMRL), the developer of Chennai Metro, has announced plans to fully outsource the operations and maintenance (O&M) of Phase II of Chennai Metro. Phase II involves the d... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password