Testing a London 'Cycle Superhighway'
The first of London's Cycle Superhighways is being launched, covering an 8.5 mile commuter route from south London into the city centre.
It is one of two initial routes to open this summer, the other going from Barking to Tower Gateway.
Another ten cycle routes from the outskirts of the city to the centre will open between now and 2015.
But beyond the encouraging name, are they any good? The BBC's Claire Heald took to the roads to find out.
Produced by Trystan Young