Correct but in order to introduce more trains no other go...Take for instance Shalimar station is having only 2 platforms there are more orginating trains including duranto / Ac exp.
Already Tambaram is developing as Terminal. RPM should be developed quickly atleast with 4 platforms.
Except Chennai all other Metro having 4 to 5 satellite stations.
Kolkata - Howrah, Sealdah, chitpur, Santragachi, Shalimar
Delhi...
more... - Nizamuddin, New delhi, Old delhi, Delhi sarai rohilla, Anandvihar
Mumbai - Cst, Central, Dadar central / Dadar Western, Bandra, LTT.. Panvel new proposal
Bengaluru - SBC , YPR, BNC,
Hyderabad - Deccan, SC, Kacheguda
but in
Chennai - Central, Egmore only two