It is not just a British thing, I have encountered many when driving in France.
The rules and usage are the same as in the UK. The other rule that makes them different to other roundabouts is that you should not use them to turn around, do U turns. Phil (trigpoint) -- Sent from my Sailfish device _______________________________________________ Tagging mailing list Tagging@openstreetmap.org https://lists.openstreetmap.org/listinfo/tagging