Realization of a Dilemma-Zone Guiding Algorithm at Signalized Intersections

This paper presents a dilemma-zone (DZ) avoidance-guiding system for vehicles approaching an intersection. The purpose of the system is to assist drivers in determining the driving behavior and to prevent vehicles from being caught in a DZ at the onset of a yellow phase. The optimal driving behavior is determined through warning information or a detailed guiding strategy. To calculate the guiding strategies, a DZ-guiding algorithm is proposed with a special focus on the vehicle DZ state and the interaction between vehicles. A simulation-based study proved the function of the proposed system and the effectiveness of the algorithm. It is found that, based on the conditions of driver´s comfort and car-following safety, the guiding system can provide proper guidance for vehicles and can determine the optimal driving behavior in advance.