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xkcd #2842: Inspiraling Roundabout
(imgs.xkcd.com)
Alt text:
Look, I just think we need to stop coddling those hedonistic roundabout hogs who get into the inner lane and circle for hours, wasting valuable capacity.
My opinion is that most traffic departments in the US rely on outdated rules for placing signs. There's one I use on a regular basis and unless you've been through it a few times it's almost impossible to figure out when to turn.