Indian Railways (IR) is a government agency under the ownership of Ministry of Railways, Government of India that operates India's national railway system. It manages the fourth-largest railway network in the world by size, with a route length of 67,956 km (42,226 mi) as of 31 March 2020. 45,881 km (28,509 mi) or 71% of all the broad-gauge routes are electrified with 25 kV 50 Hz AC electric traction as of 1 April 2020.