The Northeast Frontier Railway is one of the 19 railway zones of the Indian Railways. It is headquartered in Maligaon, Guwahati in the state of Assam, and responsible for operation and expansion of rail network all across Northeastern states and some districts of eastern Bihar and northern West Bengal.
The Lumding–Sabroom section is a railway line under Lumding railway division of Northeast Frontier Railway zone of Indian Railways. It is a single 1,676 mm broad-gauge track from Lumding in Nagaon District of Assam state to Agartala in West Tripura district of Tripura state. The 43 km-long 1,676 mm segment from Agartala southwards to Udaipur, Tripura was completed in 2016 and became operational on 23 January 2017. The remaining 70 km long track to Sabroom at the bank of Feni River at Bangladesh border was completed in 2019 and became operational on 3 October 2019.
Agartala Railway Station is located 5.5 km (3.4 mi) from Agartala in Tripura, India. It is the second capital city in northeast India to be connected to the country's railway map, moreover Agartala is the first state capital of independent India to be connected with a rail network. Before 2015 the 413-kilometre (257 mi) route was connected to Lumding with a metre-gauge track, but after the gauge conversion to broad gauge in 2016, the track is connected directly to Guwahati and the rest of India.
The Agartala–Mumbai LTT AC Express is a Superfast fully air-conditioned Express train connecting Agartala and Mumbai.
Lumding Junction Railway Station serves the Indian city of Lumding in Assam. It is the divisional headquarter of Lumding railway division of NFR. It is located in Hojai district. It is the 2nd biggest railway station of Lumding railway division, after Guwahati. It is one of the oldest railway station in India built under Assam Bengal Railway. It consists of 5 platforms with a total of 68 halting trains & 3 originating trains. The station consists of double diesel line.
Badarpur Railway Station serves the Indian city of Badarpur in Assam. It belongs to Lumding railway division of Northeast Frontier Railway of India. It is located at Cachar district in the state of Assam. It is one of the oldest station of India built in 1898. The Station connects Badarpur to other regions of Barak Valley as well as many parts of India.
Silchar railway station is a railway station situated at Tarapur, Silchar in Assam. The railway station falls under the jurisdiction of the Northeast Frontier Railway zone of the Indian Railways. The railway gauge functioned here is broad gauge. The station consists of single diesel line". It is one of the oldest railway station in India built under Assam Bengal Railway. The station has three platforms with a total of 14 originating trains. It serves Silchar, as well as the whole Barak Valley. Trains operate to different cities of India from Silchar including Delhi, Kolkata, Chennai, Visakhapatnam, Kanpur, Patna, Prayagraj, Hyderabad, Coimbatore, Vijayawada, Guwahati, Bhubaneswar, Thiruvananthapuram & Agartala. As of now, 170 stations across India are directly connected to Silchar railway station.
Ambassa Railway Station is a small railway station in Dhalai district, Tripura. Its code is ABSA. It serves Ambassa city. The station consists of 3 platforms. One express train till 30 September 2014 used to run between Lumding and Agartala daily. The meter gauge track is converted to broad gauge.
The 14619 / 14620 Tripura Sundari Express is a weekly Express train belonging to Northern Railway Zone of India, that runs between the cities, Agartala in (Tripura) and Firozpur in (Punjab) state. It is currently being operated with 14619/14620 train numbers on a weekly basis.
Teliamura railway station is at Teliamura city in Khowai district in the Indian state of Tripura on the Lumding–Sabroom section.
The Kanchanjunga Express is an Express train belonging to Eastern Railway zone that runs between Sealdah (Kolkata) and Agartala in India. It is currently operated with 13173/13174 train numbers on a four-days-a-week basis.
Dullabcherra Silchar Fast Passenger is a passenger train belonging to Northeast Frontier Railway zone of Indian Railways that runs between Dullabcherra and Silchar, the largest city in Barak Valley of Assam. It is currently being operated with 55687/55688 train numbers on a tri-weekly basis. It shares its rakes with 55689/Dullabcherra–Badarpur Passenger. It makes its main halt at Karimganj Junction for 25 minutes and locomotive/rake reversals also take place there. The train runs with SGUJ/WDP-4D and SGUJ/WDG-4.
Dullabcherra Badarpur Passenger is a passenger train belonging to Northeast Frontier Railway zone of Indian Railways that runs between Dullabcherra and Badarpur Junction. It is currently being operated with 55689 train number on tri-weekly basis. The train makes its main halt at Karimganj Junction for 25 minutes & the loco/rake reversals also takes place here. The train runs with SGUJ/WDP-4D.
Katakhal Junction railway station is a main railway station in Hailakandi district, Assam. Its code is KTX. It serves Katakhal town. The station consists of two platforms.
Agartala - Silchar Express is an Indian Express train belonging to Northeast Frontier Railway zone of Indian Railways that runs between the capital city of Tripura and largest city in Barak Valley of Assam, that is, Agartala and Silchar. It is currently being operated with 15663/15664 train numbers on a daily basis. The train makes its main halt at Karimganj Junction for 25 minutes and loco/rake reversals also takes place here. The train runs with SGUJ/WDP-4 & SGUJ/WDP-4D.
Dharmanagar Railway Station is the main railway station in North Tripura district, as well as Tripura state also. It is the oldest railway station in the state. It serves Dharmanagar and nearby cities of the district. The station consists of 2 platforms. The platform is not well sheltered. It lacks many facilities including water and sanitation.
The Badarpur–Dullabcherra Passenger is a passenger train belonging to Northeast Frontier Railway of Indian Railways that runs between Dullabcherra and Badarpur Junction in Assam. It is currently being operated with 55690 train number on a daily basis. The train makes its main halt at Karimganj Junction for 25 minutes & loco/rake reversals also takes place here. The train runs with SGUJ/WDP-4D.
The Silchar Dharmanagar Passenger is a passenger train belonging to Northeast Frontier Railway zone of Indian Railways that runs between the largest city in Barak Valley of Assam & second largest city of Tripura, that is, Silchar & Dharmanagar. It is currently being operated with 05677/05678 train numbers on daily basis. The train makes its main halt at Karimganj Junction for 25 minutes & loco/rake reversals also takes place here.
The Deoghar–Agartala Weekly Express is an Express train belonging to Northeast Frontier Railway zone that runs between Deoghar Junction in Jharkhand, India and Agartala in Tripura, India. It is currently being operated with 15625/15626 train numbers on a weekly basis.
Agartala – Lumding Express was a daily overnight train of Indian Railways. It was the only overnight MG express train from Tripura to Assam, connecting Tripura's capital city Agartala and Lumding. It was the longest overnight MG train journey in this section. The train service is suspended now as the route in which it used to run is now converted to BG from MG. This train was the only option for the passengers of Tripura and Karimganj, who were willing to travel by train to Lumding. It used to depart from Agartala as 15696 at 16:15 and from Lumding Junction as 15695 at 21:30. The train makes its main halt at Karimganj Junction for 25 mins on both sides & loco/rake reversals also takes place here. The train was hauled by the YDM-4 class of Lumding MG diesel loco shed locomotive. 15696 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. It had a length of 12 coaches with both AC & non - AC. The train used to pass through 36 tunnels in Barail Range made during British Era. Now this entire route is converted to Broad Gauge & the route from Ditokcherra to Mahur is totally diverted to another hill.
Akhaura Jn. to Badarpur Jn. section under Assam Bengal Railway
Train station 
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