不同用地类型交叉口右转车与行人冲突分析
2020-09-02杨晓芳姬玉乐
杨晓芳 姬玉乐



摘 要:为减少人车冲突及其带来的交通安全隐患问题,对不同用地类型的交叉口右转机动车与行人之间的冲突进行研究。基于视频得到人车冲突数据,通过模糊C均值聚类方法分析不同交叉口冲突严重程度与冲突原因。通过冲突聚类分析发现,不同用地类型的交叉口冲突发生原因和严重程度各不相同。其中,生活区交叉口行人到达无规律,且路口尺寸较小,其严重性冲突占33.3%。
关键词:信号交叉口;人车冲突;模糊C均值聚类;冲突严重度
DOI:10. 11907/rjdk. 201624 开放科学(资源服务)标识码(OSID):
中图分类号:TP301文献标识码:A 文章编号:1672-7800(2020)008-0060-05
Abstract: In order to reduce the conflict between pedestrians and vehicles and the hidden danger of traffic safety, this paper studies the conflict between right-turning vehicles and pedestrians at different land-use intersections. Based on the video data of pedestrian-vehicle conflict, the paper analyzes the conflict severity of different intersections by fuzzy C-means clustering method, and further studies the causes of each type of intersection conflict. Through the cluster analysis of the conflicts, it is found that the causes and severity of the conflicts are different at different land-use intersections. The results show that 33.3% of the intersections in the living area are serious conflicts, which are higher than those in the commercial area and the school district.
Key Words: signalized intersection; pedestrian-vehicle conflict; fuzzy C-means clustering; conflict severity
0 引言
在我國信号交叉口,通常右转机动车有专用车道且不受信号灯控制,因此行人过街时会与右转机动车抢夺道路时空资源,此时行人与右转车辆互相影响。而行人作为慢行交通参与者,在人车交互作用中处于劣势位置,严重的人车冲突会给行人安全造成巨大威胁。同时,不同用地类型的交叉口冲突原因和特征不同,对行人过街和车辆通行造成干扰,使交通秩序更加混乱。因此,为提高行人过街安全性,有效避免交通事故,有必要对不同用地类型交叉口右转机动车与行人之间的冲突进行研究。
交叉口处行人与右转机动车的冲突非常频繁且复杂,现有研究以冲突参数选择和冲突特性为主要研究对象。如Tourinho等[1]对交叉口人车冲突的参数选择进行了研究;Kumar等[2]通过基于时间的冲突指标,研究行人与右转机动车之……
