Double decker express, as the name suggests, are 2 storeyed trains that can accommodate more number of passengers compared to other express or mail trains. These trains ply between important cities which are just a few hundred kilometres apart. These are fully AC coaches and have only seating facilities with Chair Car (CC) class. There is a ladder to climb up the upper deck of coach. These trains do not offer catering facilities. Double-decker Trains are usually painted in vibrant yellow and red color while some other express trains also have double decker non ac coaches. 1 double-decker train runs from Katpadi Jn to Kuppam - SBC DBLDECK EXP (22625).

Katpadi Jn to Kuppam SBC DBLDECK EXP (22625) departs from Katpadi Jn station (KPD) at 09:10 and arrives Kuppam station (KPN) at 11:02. This train has 4 stoppages. Katpadi Jn to Kuppam double-decker fare is Rs.310 in Chair Car and Rs.90 in Second Seater for this train.