The concept of Garib Rath started with the vision to provide air conditioned berths at a comparatively low price for the people who could not afford to travel in AC coaches. Garib-rath phrase translates to poor man's chariot in English. The fare in this train is almost two-thirds of regular third ac fare. Usually Garib Rath have Third AC (3A) class only excepting some 1-2 trains which also have Chair Car (CC) class. The compartments of these train coaches have 9 berths making an extra space for side middle berth which is not there in any other train in India. In case passengers want to have bedrolls they need to pay separately for it. Some garib-raths run as fast as rajdhani, but they have lesser priority for track clearance compared to them. These trains are painted green with a yellow colored strip along the window panes. 2 garib-rath trains run from Darbhanga Jn to Samastipur Jn - SHC ANVT GR SPL (05577) and GARIB RATH EXP (12435).

Darbhanga Jn to Samastipur Jn SHC ANVT GR SPL (05577) departs from Darbhanga Jn station (DBG) at 23:50 and arrives Samastipur Jn station (SPJ) at 00:55. This train has 1 stoppages.

Darbhanga Jn to Samastipur Jn GARIB RATH EXP (12435) departs from Darbhanga Jn station (DBG) at 13:30 and arrives Samastipur Jn station (SPJ) at 14:55. This train has 3 stoppages. Darbhanga Jn to Samastipur Jn garib-rath fare is Rs.250 in Third AC for this train.

Sampark Kranti is a series of express trains in India that connects different states of India to the national capital - New Delhi. Sampark in Hindi means connectivity while Kranti is also a word in Hindi language meaning revolution. Thus these trains have revolutionized the state connectivity with center. These trains have a combination of all the classes - AC, Sleeper and Unreserved coaches. Sampark Kranti trains are for long distance journeys. These trains are named after states and Sampark Kranti train for a particular state has most of the stoppages in that state only. 1 sampark-kranti train runs from Darbhanga Jn to Samastipur Jn - BIHAR S KRANTI (12565).

Darbhanga Jn to Samastipur Jn BIHAR S KRANTI (12565) departs from Darbhanga Jn station (DBG) at 08:20 and arrives Samastipur Jn station (SPJ) at 09:05. This train has 1 stoppages. Darbhanga Jn to Samastipur Jn sampark-kranti fare is Rs.1245 in First AC, Rs.750 in Second AC, Rs.545 in Third AC and Rs.175 in Sleeper for this train.

Humsafar trains are long distance superfast trains that traverses overnight journeys. This is a new concept by the Indian Railways. Some Humsafar trains also run for more than 24 hours. Keeping in mind the middle class travellers, Humsafar was launched last year by the Former Railway Minister Mr. Suresh Prabhu. It has only Third AC class coach and have optional meal service. This train follows dynamic pricing meaning fare increases as the seat availability decreases. However, these trains hold lesser priority than Rajdhani and Shatabdi trains. Humsafar trains are equipped with modern day amenities and enhanced safety features. There are CCTV cameras fitted in every coach of Humsafar trains and there are charging points for each berth. One can also see current running speed of train on the LEDs fitted above doors. These trains are characterized by beautiful graffiti paint with vibrant sky blue color on outer surface of coaches. 3 humsafar trains run from Darbhanga Jn to Samastipur Jn - DBG NDLS SPL (02569), DBG ADI SPL (09466) and JYG ASR SPL (04651).

Darbhanga Jn to Samastipur Jn DBG NDLS SPL (02569) departs from Darbhanga Jn station (DBG) at 06:30 and arrives Samastipur Jn station (SPJ) at 07:50. This train has 1 stoppages.

Darbhanga Jn to Samastipur Jn DBG ADI SPL (09466) departs from Darbhanga Jn station (DBG) at 03:00 and arrives Samastipur Jn station (SPJ) at 04:05. This train has 1 stoppages.

Darbhanga Jn to Samastipur Jn JYG ASR SPL (04651) departs from Darbhanga Jn station (DBG) at 05:30 and arrives Samastipur Jn station (SPJ) at 07:00. This train has 1 stoppages.