Less than half the 25,000 in UK, or just over half the 19,000 in Italy, or almost matching the 15,000 in Spain.

It's great news all over that the number is clearly increasing, but still a very long long way to go until it becomes widespread.

To put things into perspective: 65 million + 60 million + 45 milion = 170 million people, about half of the US population.

So 59 000 roundabouts for half the population versus 10 000 in the US.

That's a deficit of 90% per capita :-)

Indeed, wasn't until 2011 or so until I saw my first roundabout in the USA.

For my other Americans, read the Australian's post above. Can get across an entire town without stopping as a reason to remake our towns with roundabouts.

My area, and a lot of others I think, are no longer building stop light intersections. Everything new is a roundabout.