In accordance with his pre-election pledge, bus fares were frozen for four years, but then the standard single cash fare on buses more than doubled. Further, and contrary to his pledge during his first election campaign, when he said "only a de-humanised moron would get rid of the Routemaster", Livingstone removed the famous Routemaster buses from routine service on 9 December 2005, because the new buses were wheelchair-accessible, although several of the old buses are used on shortened "heritage routes". There was some question over the legality of using the old Routemaster under the Disability Discrimination Act 1995 as the Routemasters effectively banned wheel chair users.