The 15717 / 18 Guwahati–Mariani Junction Intercity Express is an Express train belonging to Northeast Frontier Railway zone of Indian Railways that runs between Guwahati and Mariani Junction in India.

[1] The 15717 / 18 Guwahati–Mariani Junction Intercity Express has nine general unreserved & two SLR (seating with luggage rake) coaches.

As is customary with most train services in India, coach composition may be amended at the discretion of Indian Railways depending on demand.

As the average speed of the train is lower than 55 km/h (34 mph), as per railway rules, its fare doesn't include a Superfast surcharge.

As the route is going to electrification, a New Guwahati-based WDM-3D diesel locomotive pulls the train to its destination.