Railway electrification in India began with the first electric train, between Chhatrapati Shivaji Terminus and Kurla on the Harbour Line, on 3 February 1925 on the Great Indian Peninsula Railway (GIPR) at 1500 V DC. Heavy gradients in the Western Ghats necessitated the introduction of electric traction on the GIPR to Igatpuri on the North East line and Pune on the South East line. On 5 January 1928, 1500 V DC traction was introduced on the suburban section of the Bombay, Baroda and Central India Railway between Colaba and Borivili, and between Madras Beach and Tambaram of the Madras and Southern Mahratta Railway on 11 May 1931, to meet growing traffic needs. The 3000 V DC electrification of the Howrah-Burdwan section of the Eastern Railway was completed in 1958. The first 3000 V DC EMU service began on the Howrah-Sheoraphuli section on 14 December 1957.