People say the Turks are crazy drivers, and while it's true they don't follow the rules all the time, I think they drive with a lot more common sense than American drivers. They pass when it's convenient, make a third lane when possible, and run red lights if needed. Americans, I think, need rules because they really aren't paying attention. For example, look at this intersection.
Each direction has two lanes for a total of eight lanes intersecting. There is no stop sign. People just cross the intersection when there's a gap in traffic. And it works out for the most part - I've never seen an accident or any evidence of one. I think that if you put a four-way intersection with no stop sign in America, everyone would just plow straight through. They wouldn't register that cars might be coming from a different direction, and they certainly wouldn't stop or slow down for a car passing across.
This would never work in America. Really, I think we need rules so we can carelessly drive, and when we crash into someone, we know exactly who's to blame.