关键词: 交通工程, 能见度, 行人过街, 冲突识别, 交通安全

Abstract: In order to reduce the traffic accidents of pedestrians and vehicles crossing the street at non-signalized intersections in low visibility, a study on the identification of vehicles and pedestrians crossing the street considering the impact of visibility was carried out. Combined with the relative position, velocity, acceleration, vehicle size and other information of vehicles and pedestrians, the conflict recognition model between pedestrians and vehicles was constructed. The visibility measurement method of traffic environment based on the distance between people and vehicle was determined, and the relationship model between vehicle speed and visibility was given. On this basis, the proposed model was modified, and the effectiveness of the proposed model was verified. The results show that the proposed conflict recognition model can effectively identify the conflicts between pedestrians and vehicles crossing the street, and the accuracy of conflict recognition is 82.4%. This study can provide decision-making for pedestrians and vehicles at non-signalized intersections with intelligent vehicle infrastructure cooperative systems, and thus improve the safety of pedestrian and vehicle in low visibility.

Key words: traffic engineering, visibility, pedestrians crossing the street, conflict identification, traffic safety