Core: Roundabout: who has priority?
Turbo roundabout: choose your lane before the roundabout. A turbo roundabout has two lanes on the ring, separated by a raised lane divider with a solid line on each side. So changing lanes on the roundabout is neither possible nor allowed. You choose your lane in advance, using the roundabout arrows on the approach and the blue lane-layout sign; the arrow on your approach lane is mandatory. From the side road, the right-hand lane is for turning right only. When entering, B6 and shark's teeth still apply: you give way to all traffic on both ring lanes. At turbo roundabouts outside built-up areas cyclists usually do not have priority, inside built-up areas often they do — always look at the shark's teeth at the crossing.