[manigandham]

Just because areas are shared doesnt mean there are no rules.

Otherwise why pay attention to traffic lights and street lanes? Just drive wherever you want - in fact why stop for pedestrians at all? Don't pedestrians have to accommodate cars too?

[jessaustin]

They haven't always had to. Presently, they do. Eventually, in a better world, they won't. Walking hasn't changed for millennia, and it won't in the foreseeable future. Riding in automobiles, however, is about to change completely.

Projecting our typical pissed-off aggressive auto-commuter attitudes into the future is a mistake, and will come to be seen as a sort of mental illness. Well-adjusted robocar passengers will pay no attention to traffic, just as normal people today don't constantly bother air stewardesses about how long their flight is taking.