There are modern roundabouts and then there are rotary intersections. Modern roundabouts have traffic entering the circle yield to traffic already within it, while rotary intersections have traffic within the circle yield to traffic entering. That makes rotaries, but not modern roundabouts, susceptible to locking up like this.
There are modern roundabouts and then there are rotary intersections. Modern roundabouts have traffic entering the circle yield to traffic already within it, while rotary intersections have traffic within the circle yield to traffic entering. That makes rotaries, but not modern roundabouts, susceptible to locking up like this.