424
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.
i think it should spiral outwards instead, that way if you need to take the third exit, you switch to the third lane and simply follow it to your exit
Agreed. If you're in the outside lane you must exit.