1403
xkcd #2932: Driving PSA
(imgs.xkcd.com)
A community for a webcomic of romance, sarcasm, math, and language.
I think it's probably got more to do with the drivers. There are plenty of roundabouts like this where I am in Aus, and they get used just fine. Over here they have a far lower rate of accidents than other types of intersections. We never have 4 way stops either, we just put a roundabout there.