Superfast Mail/Express trains are express rail services of the Indian Railways. They make few stops, unlike other Mail/Express trains, achieving somewhat shorter journey times. Tickets cost more than Mail/Express rates. As of 2015[update], 450 pairs of Superfast trains ran on the Indian Railways. The 12908/Maharashtra Sampark Kranti Express (NZM/Hazrat Nizamuddin - BDTS/Bandra Terminus) is the fastest non-Shatabdi, non-Rajdhani Mail/Express train in India.
In some cases, trains run Superfast where there is an overlapping Mail/Express service available, and run regular Mail/Express trains where there is no supplementary Mail/Express service.
Trains with an average speed, excluding halts, equalling or exceeding 55 kilometres per hour (34 mph) (60 kilometres per hour (37 mph) until the early 1990s) on both up and down journeys fall into the Superfast category and are numbered with a prefix of 12 (previously 2). Including halts (both revenue and scheduled technical halts) the average speed often is below 55 km/h.
Increased stops for various reasons led to a significant reduction in average speed of many trains, despite improvements in track and haulage.
These Superfast trains have been Superfast since their inauguration and have not deteriorated till now. These Superfast services maintain an average speed throughout their route and often have the best Rake/Loco Combination. Some of the Daily Superfast Overnight services are as follows:
These Superfast express are not Duronto Expresses, but, like Duronto Expresses, have no intermediate commercial stops and serve as a non-stop connection between the source and the destination station.
There are three of this type:
These superfast trains connect two major nearby cities serving commuters and MST Ticket holders. These act as long-distance reserved suburban trains with sitting accommodation. These are quite fast and maintain a high average speed for short distances along with priority over other trains. Some famous Intercity Superfast trains are as follows:
These Superfast trains were regular Mail/Express trains when inaugurated but have been upgraded to Superfast with time maintenance of 55 km/h (34 mph). Most Overnight Expresses come under this class. Some are as follows: