Question Drivers entering a roundabout or traffic circle: Answers Must always stop before entering. Must yield to drivers already in the roundabout or traffic circle. Have the right-of-way if there is one lane. Have the right-of-way if there are two lanes. Explanation Drivers entering a roundabout or traffic circle must yield the right-of-way to drivers already in the circle. Take a FREE Practice Test Now This questions appears in the following tests: Pennsylvania Practice Test