Dibrugarh–Kolkata Express was a weekly Superfast train that connects Dibrugarh, known as the "Tea City of India", in eastern Assam and Kolkata, West Bengal.
The train numbered as 12525/12526; 12526 covers a distance of 1356 km in 24 hours and 50 mins with an average speed of 54 km/h from Dibrugarh to Kolkata, and on its return journey 12525 covers the distance in 24 hours and 50 mins with an average speed of 54 km/h.
The train has LHB rakes with max speed of 110 kmph.
15906 / 15905 – Dibrugarh–Kanyakumari Vivek Express It is hauled by WDP-4D/WDP-4B class of locomotive of Diesel Loco Shed, Siliguri from Dibrugarh to New Cooch Behar.
From there onwards it is hauled by WAP-7 Locomotive of Electric Loco Shed, Howrah till Kolkata.