The longest passenger diesel single loco haul on Indian Railways, probably the longest in the world. Trivandrum-Jodhpur Express behind an Ernakulam WDM-2 approaches on the Kottayam-Ernakulam Town line. This train is hauled by a single loco on its entire 2740 km stretch. Near Ernakulam Jn, 2004-04-03. By Jimmy Jose.