The Cachar Express was a daily Indian Railways metre-gauge overnight express train from Lumding Junction (nearest broad-gauge rail link of Silchar) to Silchar (second largest city of Assam) and vice versa, both stations are situated in the Indian state of Assam.
The train used to cover a distance of 212 km in 12 hours in its up and down journey with an average moving speed of 18 km/h.
The train was hauled by the YDM-4 class of Lumding metre-gauge diesel loco shed locomotive.
15692 used to be connected with two locos, one in front and another in the rear for pulling and pushing its way to the height of Barail Range, from Harangajao to Jatinga.
[2] The train used to pass through 36 tunnels in Barail Range made during the British era.