Rule If trajectories intersect and there are no signs or traffic lights, you must yield to those on your right. When entering a roundabout or changing your trajectory, yield to those already moving along the circle. Explanation This avoids conflicts: the red car driver, who is changing their path, must yield to the blue cars that are traveling along the roundabout without changing their trajectory. Tip Before crossing trajectories, slow down and look to the right and at the roundabout. If in doubt — yield.