dondare, have you ever ridden in the Netherlands?
If you have, then you will realise what I mean, and that makes your comments puzzling - why would anyone want to cycle anywhere near cars knowing what the Netherlands is like?
If you haven't, then you won't realise we do NOT have good cycling infrastructure in britain.
We have a few miles of dis-used railway lines, strewn with dog shoot, condoms, and needles.
Other than that we have a Picsso-esque attempt at painting cycle lanes at the side of roads, which provide no cycling at all, but do double as good parking for idle tossers to get their cars a few inches closer to greggs bakery.
I have never cycled in the Netherlands.
In Britain I cycle on the roads and I find them perfectly suitable for the type of riding that I do. I have no objection to sharing them with other road-users, even those who travel in tin boxes, so long as they obey the Law.
There is not room in Britain for another system of roads or paths for use solely by cyclists. Converting old railway lines and allowing cyclists to ride through parks and pedestrianized city-centres is good up to a point. But maintaining a full presence on the real roads is the best option.