Treehugger has been running a couple of articles like this one, http://www.treehugger.com/bikes/war-...h-toronto.html. I find it disturbing that a common theme running through these articles is that traffic laws are for regulating automobiles, presumably they also mean large trucks, motorcycles, anything that has an engine/motor. Maybe I'm thinking too much like an engineer but it seems to me that traffic laws are predominately used for standardizing user access to a shared resource, roads and sidewalks. Sidewalks because they are mentioned in the traffic laws and do impact the road system. In other words, the laws are for regulating the behavior of people regardless of what they drive.
I can sympathize with the example they give in the latest article of a street with stop signs at every intersection. I live by a street like that, I avoid it as much as possible. But I have no doubt that if the stop signs were not there and it was used by speedy velomobile packs the home owners would still want stop signs to slow those things down.
Another thought comes to mind, if we got rid of all the cars, by their way of thinking we could get rid of the traffic laws. So with streets full of unregulated bicycles, carnage. And then the re-emergence of traffic laws.