Ac three teir economy class coaches should be given in following trains it will much better to replace existing three AC coach with economy class ( atleast 1 coach )
12189/12190 Mahakaushal Exp
12155/12156 Shan e bhopal exp
22181/22182...
more... Nizamuddin - jabalpur SF Express
12723/12724 Telangana Express
12721/12722 Dakshin express
12566/12565 Bihar sampark kranti exp
12561/12562 swantantra sainani Express
12615/12616 Grand trank express GT