Can't help but think some of the traffic engineers in the UK are a little bonkers, see Swindon's Magic Roundabout (http://en.wikipedia.org/wiki/Magic_Roundabout_(Swindon)).

Americans are always awed/terrified by the Magic Roundabout, but it's actually very practical (turning right is much easier than on a single big roundabout, and the whole thing moves better), and straightforward to use even for newcomers (well, assuming you've used roundabouts at all - I understand America doesn't have many of them?)

http://en.wikipedia.org/wiki/Traffic_Light_tree (sculpture).