[mickt]

I agree, I drive both in the US and Ireland, and in Ireland once you know the rules of navigating a roundabout it's usually trivial to navigate all roundabouts. Just look at the 3 pics on this page: http://www.drivingschoolireland.com/roundabouts.html

In the US (at least in the Boston area) it's another matter, and it's almost as if people just don't know what they're doing, and after doing my driving test here I'd believe it. :)

[mickt]

I should add that in Ireland there are still people who can't navigate roundabouts/traffic circles/rotaries, but I think due to the less dense population it's a bit less of a problem (except for some motorways around Dublin).

[DanI-S]

Definitely; I'm from the UK and just took my California driving test - it's amazing how simple it is! Didn't even have to reverse around any corners. Although I've never had to do that outside of my British driving test, either...