But why is it that countries that are culturally close to Britain (eg colonies) have much higher fatality rates? You'd expect them to have implemented some of the same policies. Singapore and Malta have similar rates, but the others are much higher.

Regarding roundabouts, it makes sense when explained like in the article. But I've always felt like they were dangerous, especially the ones they have in Britain where you have multiple lanes with lights and connecting roundabouts. Perhaps that sense of fear is what actually makes them safe.

Large roundabouts are pretty safe, if you've gone through the learning process we have in the UK. I did about 30-40h of practical lessons with an instructor, over half of which would have included multi-lane roundabouts.

The lights control the flow, so no need to worry about giving way. You pick your lane in the lead up using the signs and road markings. Then you follow your painted lane, the markings of which guide you all the way through. The markings and lights do all the work for you, unless you're in the wrong lane at the start. All your awareness is focused on looking for hazards of people who are in the wrong lane because your route is dictated by the road markings.

I will admit, they look complicated - especially if you've never driven one before. My first time around one was a bit nerve-wracking, but they quickly become second nature.

Ireland has followed the same trend, slightly behind the UK.

Because they don't have the same road use culture.