Types of Passenger Service on Indian Railways

1	Duronto Express	Duronto Express These are the non-stop (except for operational stops) point to point rail services introduced for the first time in 2009. They connect the metros and major state capitals of India and are faster than Rajdhani Express. They provide first AC, two-tier AC and three-tier AC accommodation. Some of them provide Sleeper Class accommodation.
2	Rajdhani Express	These are air-conditioned trains linking major cities to New Delhi. They have high priority and are one of the fastest trains in India, travelling at an average speed of 130 km/h (82 mph). They have only a few stops. In the Railway budget of 2014, the it was proposed that the speed of Rajdhani express, and Shatabdi Expresses would be increased up to 200 km/h. Rajdhani Express
3	AC Express	These are fully air-conditioned trains linking major cities in the country. They have high priority and are one of the fastest trains in India, travelling at about 130 km/h (82 mph). They have only a few stops.
4	Shatabdi Express	The Shatabdi trains are air-conditioned intercity trains for travel during day. They have seats and executive class seats. Some of them 3-tier AC berths. They are the fastest trains in India, travelling at about 130–160 km/h.
5	Garib Rath	Garib Rath Air-conditioned no-frills trains with seats and 3-tier Economy AC berths. The maximum speed is 130 km/h.
6	Jan Shatabdi Express	Jan Shatabdi Express are a more affordable variety of the Shatabdi Express, which have both AC and non-AC classes. The maximum speed is 130 km/h.
7	Intercity Superfast Express/Mail	Mail/Express Train View These are trains travel at a speed greater than 100-120 km/h (60-75 mph). Tickets for these trains have an additional superfast surcharge.
8	Express	These are the most common kind of trains in India. They have more stops than their super-fast counterparts, but they stop only at relatively important intermediate stations.
9	Passengerand Fast Passenger	These are slow trains that stop at most of the station or every station along the route and are the cheapest trains. The trains generally have unreserved seating accommodation but some night trains have sleeper and 3-tier AC compartments. These also travel about 40-80 kmph
10	Suburban trains	These trains operate in the urban areas of Mumbai, Delhi, Kolkata, Chennai, Hyderabad, Ahmedabad, Pune and between Kanpur and Lucknow, usually stop at all stations and have unreserved seating accommodation.
11	Metro	These trains are designed for city transport. Indian Railway constructed Kolkata Metro for the city of Kolkata.