This new extension was, together with the existing tracks between Ealing Common and Acton Town, the first section of the Underground's surface lines to be electrified and operate electric instead of steam trains. The deep level tube lines open at that time (City and South London Railway, Waterloo and City Railway, and Central London Railway) had been electrically powered from the start. Electric trains started running on the section of line between Ealing Common and Ealing Broadway on 1 July 1905.