> Nearly 70% of all city centre trips are by bicycle, and more space is needed on the bike networks.
Yes, please! I want that where I live. It has been improving, but we have a long way to go. I really hope more US cities end up with majority bike/ped traffic rather than majority car traffic.
As for pedestrian traffic, my experience with medium US cities is that they are far too spread out for walking to be an option for most things. It's hard to see how this could change without Americans abandoning their beloved individual suburban homes with yards.
I think in most places public transportation is the only effective replacement for cars.
I could see cities easily changing though, by slowing the outward growth and becoming more dense... and more bike-friendly in the center! ;)
The city I live in has been growing outward, but that's coming to an end now that the expansion in the valley has hit the mountains on every side. The good news is my downtown is getting more bike friendly every year, I'm just looking forward to bikes being a majority. (Which might never actually happen since it snows where I live...) :)