Tn is an exceptional. some trains don't get halt so easily even if politician memo's are submitted.
until SR n RB decide it.
TN will never get it, not even a halt, coz it can tamper its run time.
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Some...
more... trains are closely monitored by zones, whereas some by RB.
one of them is TN here.
The rest is upto SR-SCR and RB's decision.