Siruthuli requests Railways to rename Coimbatore-Chennai Superfast Express as ‘Noyyal Express’. COIMBATORE Siruthuli, the Coimbatore-based environmental organisation working on water conservation and afforestation, has requested the Southern Railway to rename Train No. 12680 Coimbatore-MGR Chennai Superfast Express as ‘Noyyal Express’. In a representation to Southern Railway General Manager U.