DEMU train - Extending Connectivity. It’s a self propelled passenger train with two or more coaches having an on-board diesel alternator to electric multiple unit. Such trains are not used beyond 150 Kms of rural and suburban travel in India and operates on non electrified routes as well. These trains are never hauled by locomotives as they are self propelled. They have faster acceleration than conventional passenger trains, length is limited to 12 coaches (or 3 basic units of o