David Hembrow posted this on his website as another perfect example of how to design pedestrian and cycleways around major junctions:
The actual link is here.
Note how the cycles lanes are comfortably wide and a good distance away from fast moving traffic. Note also how riders and pedestrians are not required to stop in the middle of the road and apply a second time to cross the road by pressing a button.
Travel along South Road, Grand Junction Road or any major thoroughfare and see if you can see anything even approaching this. You won't. One day though I am sure we will. The need and the desire are there.