RogerS":i45xhans said:Your idea is totally impractical for most of London.
Are we at cross purposes here? People can drive and park on no through roads as much as they like, but they don't unless for access. And yes, one way roads can complement each other. That's the job of the traffic engineer, to work out solutions that are suitable for cycling as well as driving.
If you agree it's practicable for parts of London, start there.
I don't how long ago you saw that cycle track. They are getting busy now. TfL predicts that in some areas cycle traffic will soon outnumber cars. I said before that most bike infrastructure is very poorly designed. Look again at that example Jacob started with. Picture the street in the rush hour, and ask yourself how many people would cycle there. Without a good, linked-up network of good quality tracks you are only going to see the people who are prepared to ride in traffic and who don't want to slow their journey. How many drivers would use a motorway if there were only five yards of it, it didn't go anywhere, and they had to cross a swamp full of alligators to get to it?