TBM has been identified as 3rd terminal of Chennai and the work is in progress. As of now 2 Pit lines are being constructed in old tbm staff quarters. Actual plan is to build 6 I think.
There are plenty of space available to build a terminal kind of station demolishing current goods platform which can be newly built next to that. so far it has 4 pfs for express trains. Additional 3 platforms can make it as a better terminal.