I've been merrily splitting up roundabouts. When we have separate relations for each direction of a bus route, we'll even need to split the ones with point junctions.
I leave the junction=roundabout tags (if someone's put them in), so presumably some zoom levels in some renderings end up with multiple roundabout symbols overlapping one another. That doesn't misrepresent anything, it just might look slightly distorted. That's for the renderer to sort out (if they feel it's important). Richard
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