American drivers, imagine a busy intersection in a large city with no traffic lights and no traffic cops. This is the condition in many cities around the world. This intersection is in Meskel Square, Addis Ababa, Ethiopia. The thing that keeps drivers from constantly crashing is the idea that no one has any right-of-way, and you just go when you can, stop when someone is in front of you, and don’t hit anyone. Could the famously traffic law-abiding American drivers deal with such a system? Probably not, because we are concerned with who has the right-of-way, and tend to get a little hostile when someone causes us a two-second delay in our travels. -via Arbroath
Traffic engineers know all about this, but I'm sure they don't use it more often because it would put them out of a job.