India does not have any railways classified as high-speed rail (HSR), which have operational speeds in excess of 200 km/h (120 mph). The fastest train in India is the Gatimaan Express with a top speed of 160 km/h (99 mph), which runs between Delhi and Agra.
Prior to the 2014 general election, the two major national parties (Bharatiya Janata Party and Indian National Congress(INC)) pledged to introduce high-speed rail. The INC pledged to connect all of India's million-plus cities by high-speed rail, whereas BJP, which won the election, promised to build the Diamond Quadrilateral project, which would connect the cities of Chennai, Delhi, Kolkata, and Mumbai via high-speed rail. This project was approved as a priority for the new government in the incoming president's speech. Construction of one kilometer of high speed railway track will cost ₹100 crore (US$16 million) - ₹140 crore (US$22 million) which is 10-14 times higher than the construction of standard railway.
India's prime minister Narendra Modi approved the choice of Japan to build India's first high-speed railway. The planned rail would run some 500 km (310 mi) between Mumbai and the western city of Ahmedabad, at a top speed of 320 km/h (200 mph). Under the proposal, construction is expected to begin in 2017 and be completed in 2023. It would cost about ₹980 billion (US$15 billion) and be financed by a low-interest loan from Japan. India will use the wheel-based 300 km/hr HSR technology, instead of new maglev 600 km/hr technology of the Japan used in Chūō Shinkansen. India is expected to have its HSR line operational from 2025 onwards, once the safety checks are completed.