The combined name denotes the steps taken by Indian Railways to provide high speed train connections from cities around India with the National Capital through the provision of non-air conditioned express trains with few stops and operating at high speeds.

The Rajdhani and Shatabdi series are the fastest trains in India in terms of average journey speeds.

The trains in the Sampark Kranti series connect the Indian states to the national capital city of New Delhi.

The initial decision of non-stop run of this Express series of trains was cut short and was given way to commercial stopping outside the states.

The Karnataka Sampark Kranti Express from Delhi Hazrat Nizamuddin to Yesvantpur was the first train which was launched on 8 February 2004.