Views on London Cycle Superhighways
15 November 2013 Last updated at 23:03 GMT
BBC London's Political Correspondent, Karl Mercer, has been looking at the Mayor Boris Johnson's Cycle Superhighways.
The special lanes, which were introduced in a blaze of publicity, are aimed at improving safety but so far six cyclists have been killed on them.
Martin Key, campaigns manager for British Cycling, Peter Walker from The Guardian, David Davies from the Parliamentary Advisory Council for Transport Safety and London's Cycling Commissioner Andrew Gilligan spoke to BBC London.