Rajdhani express are premium category trains by the Indian Railways that redefines luxury travelling in India. It is a fully air-conditioned train which connects country capital (Delhi) with state capitals. That is why they are called 'Rajdhani' which translates to 'Capital' in English. These train runs at very high speed and therefore it usually takes least time to reach destination compared to other trains on the same route. Mumbai rajdhani is the fastest rajdhani train which attains a maximum speed of 140 kmph on some stretch. Rajdhani Express offers catering facilities inside the train the fare of which is included in ticket fare. Rajdhani trains have 3 classes - First AC (1A), AC II-tier (2A) and AC III-tier (3A) only and they are coupled with LHB coaches that have higher safety features. The ticket fare for Rajdhani is maximum amongst all trains on the same route and has dynamic fare (Flexi Fare) system. Waitlisted passengers are strictly not allowed inside this train. Rajdhani train coaches are usually painted in red with a grey colored strip outside. 2 rajdhani trains run from Dhanbad Jn to Kolkata - HWH RAJDHANI (12302) and SEALDAH RAJDHNI (12314).

Dhanbad Jn to Kolkata HWH RAJDHANI (12302) departs from Dhanbad Jn station (DHN) at 06:38 and arrives Howrah Jn station (HWH) at 09:55. This train has 2 stoppages. Dhanbad Jn to Kolkata rajdhani fare is Rs.1525 in First AC, Rs.935 in Second AC and Rs.705 in Third AC for this train which includes meal charges also.

Dhanbad Jn to Kolkata SEALDAH RAJDHNI (12314) departs from Dhanbad Jn station (DHN) at 06:23 and arrives Kolkata Sealdah station (SDAH) at 10:10. Dhanbad Jn to Kolkata rajdhani fare is Rs.1525 in First AC, Rs.935 in Second AC and Rs.705 in Third AC for this train which includes meal charges also.

Duronto express is a newer premium class of train which runs as fast as Rajdhanis. Duronto word comes from restless in Bengali as these trains had no intermediate commercial stops when they started. But since Indian Railways incurred losses for these trains, some technical stops were converted to commercial stops. On some routes (such as Delhi-Kolkata) they take lesser time than corresponding Rajdhani express. Unlike rajdhani some durontos also have non-air conditioned sleeper class. Thus, Duronto trains have classes First AC (1A), AC II-tier, AC III-tier and Sleeper. Bed-rolls in sleeper class of Mixed Duronto Express trains will be supplied to passengers on demand, on payment of stipulated charges. Duronto trains are distinguished by vibrant and colorful vinyl coating on the outer surface of the coaches. 1 duronto train runs from Dhanbad Jn to Kolkata - SDAH DURONTO (12260).

Dhanbad Jn to Kolkata SDAH DURONTO (12260) departs from Dhanbad Jn station (DHN) at 09:17 and arrives Kolkata Sealdah station (SDAH) at 13:25. Dhanbad Jn to Kolkata duronto fare is Rs.1510 in First AC, Rs.925 in Second AC and Rs.695 in Third AC for this train which includes meal charges also.

Shatabdi express is a premium category full air-conditioned train that connects important cities of India. These are the fastest trains in India which can run at over 150 kmph. These trains runs for short distances only and are not for overnight journeys. Shatabdi trains have only seating arrangements. They are equipped with safer LHB coaches. The first Shatabdi Express train was introduced in 1988 to commemorate the birth centenary of Jawahar Lal Nehru, the first Prime Minister of India. These train offers catering facilities and the food fare is included in ticket cost. Shatabdi trains have classes Chair Car (CC) and Executive Class(EC). These are best alternative to bus journeys. 1 shatabdi train runs from Dhanbad Jn to Kolkata - SHATABDI EXP (12020).

Dhanbad Jn to Kolkata SHATABDI EXP (12020) departs from Dhanbad Jn station (DHN) at 17:40 and arrives Howrah Jn station (HWH) at 21:20. This train has 4 stoppages. Dhanbad Jn to Kolkata shatabdi fare is Rs.1270 in Executive Class and Rs.680 in Chair Car for this train which includes meal charges also.

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 Dhanbad Jn to Kolkata - SAMPARK K EXP (12330).

Dhanbad Jn to Kolkata SAMPARK K EXP (12330) departs from Dhanbad Jn station (DHN) at 11:42 and arrives Kolkata Sealdah station (SDAH) at 16:35. Dhanbad Jn to Kolkata sampark-kranti fare is Rs.1255 in First AC, Rs.755 in Second AC, Rs.555 in Third AC and Rs.225 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. 1 humsafar train runs from Dhanbad Jn to Kolkata - SDAH HUMSAFAR (22318).

Dhanbad Jn to Kolkata SDAH HUMSAFAR (22318) departs from Dhanbad Jn station (DHN) at 12:25 and arrives Kolkata Sealdah station (SDAH) at 17:30. Dhanbad Jn to Kolkata humsafar fare is Rs.620 in Third AC for this train.