At the bottom of my road there is a mini roundabout painted onto the road, there are three roads approaching it, and traffic from all directions seem to think they have right of way, on the advanced motorists courses they teach you to ride over the roundabouts for smoother more direct driving/riding, what would happen if you were involved on an accident and it was proved that you had ridden over the roundabout, I am sure that the same insurance company that reduced your insurance for being an advanced motorist, would try to reduce your claim as technically you would be partially at fault due to positioning etc