Rake share arrangement or RSA means the scenario where the incoming rake of one train is used for the outgoing rake of the other-this is to ensure optimizing the use of rakes and minimizing idling time-in this case these trains share their rakes at Ranjendranagar. Hatia Rajendranagar after arrival at Rajendranagar leaves as Islampur Express. Islampur Express which arrives into Rajendaranagar leaves as Hatia Express