The solution town planners frequently pursued was to separate vehicles and pedestrians by placing them on different levels. Different schools disagreed on whether the cars or the pedestrians should be elevated. Nevertheless, the idea gave rise to utopian futuristic visions of what an urban area could be.
I enjoyed your reflection on planning and pedestrians Duncan. It reminds me of my first experience of walking around Sydney. I pride myself on my sense of direction, however the chaos of the breakup of pedestrian and cars totally threw me.