WDP-3A 15516 GOC in full form hauling Kanniyakumari Express. There are a few points to note -- 1. The rectangular shape of smoke emission pipe of WDP-3A; 2. The smoke virtually covers the first few compartments; 3. KK is taking B line instead of the A line, which was taken by a freight rake minutes before KK passed through and 4. Guess why do the compartments alone are making a noise while crossing the PSC bridge over Saidapet Bazaar Road subway (as against the loco which made a quiet pass through)? By S.Aravind