fixed distances? cars drive in outside lanes at a fixed distance....what kind of armchair absolutism is that, mr head?
You must not bike much, if you think cars
always or with few exceptions drive 2-3 feet from the lane stripe. Cars turning right tend to move further to the right. some drivers like to block approaching bicyclists.
armchair cyclist...
doesn't most of your anti facilites spiel have to do with drifting motorists?