The problem with round-abouts here and in North America is that they were never implemented when cars really started becoming popular so thus it was never taught how to use them. Now they are popping up more and more.. Guess what? Most people have no clue how to go around them or the right of way. When I was living in Vaudreuil people would ALWAYS stop in the round-about to let someone in, what happens? A massive cluster fuck. Instead NA decided to have lights everywhere to control traffic on heavy corridors. Having driven extensively in the UK round-abouts do work well, yes some have lights now but for the most part you can actually get down a road and between places quickly.