A Method of Deadlock and Girdlock Avoidance at Signal-free Intersections

Recently, traffic light optimization is expected in order to reduce the time spent waiting for red lights. While some literature proposes signal-free intersection control that eliminates traffic signals and turns autonomous vehicles themselves into traffic lights, deadlock and gridlock might happen. This paper proposes a method to avoid deadlock and gridlock. Simulation experiments showed that the proposed method is more efficient than traffic light control.