"My daily commute (by bike) brings me over the hampstead heath every morning. Singing birds, waving grass, old trees instead of the endless dark routine of the tube.
The danger of cycling is mostly due to bad car drivers. As a cyclist you have to claim your position - the middle of the road when traffic is slow and you can keep up - in the middle when traffic is to slow and you can take over - and only when traffic is MUCH faster you cycle on the left hand side (the most dangerous position).
Traffic lights are optional and requiers an assesment on case to case basis. Mostly they are useless traffic blockers (also for carrs), if you don't believe this - get on a bike and you will know."