As per revised letter from Northen Railway on traction of trains dated 24-May-2018 Train number 12555/12556 Gorakhdham Super Fast Express will be given eloco from BNW/Bhiwani to GKP/Gorakhpur from 25-May-2018 and while return from BNW/Bhiwani Junction to GKP/Gorakhpur on 26-May-2018.