信号交叉口右转机动车与行人冲突运动过程建模及仿真

发布时间：2018-06-20 06:51

本文选题：交通工程 + 右转机动车　；参考：《南京理工大学》2017年硕士论文

【摘要】：随着经济的发展,行人交通安全问题日趋严重。目前我国城市道路行人过街交通状况较差,步行交通方式死亡人数居高不下,特别在一些信号交叉口,右转机动车的转弯行为不受信号控制,容易与过街行人发生冲突,甚至发生交通事故,造成整个交叉口效率低下,进而影响整个路网,因此过街行人安全问题必须引起重视。本文首先分析我国信号交叉口行人过街状况,介绍了现有的行人与右转机动车冲突国内外研究现状。基于行人过街交通特性和右转机动车交通特性,深入剖析人车冲突特性,确定行人与右转机动车冲突区域,并按照行人过街类型将冲突分为A、B、C、D、E五类。采用视频检测法调查典型交叉口,依据行人和右转车交通冲突数据,研究冲突对二者交通特性的影响。同时建立右转机动车与行人冲突严重度模型,计算所调查交叉口冲突严重度。然后基于冲突特性和冲突严重度分析,从研究右转机动车辆的转弯过程和决策过程出发,提出右转机动车与行人冲突运动过程综合仿真模型,包括右转机动车轨迹、速度模型和可接受间隙模型,研究人车冲突相互作用过程,并通过VISSIM仿真,验证模型有效性。最后对交叉口安全提升对策进行研究。以中山门大街-胜利村路交叉口为例,运用仿真模型对改善后交叉口进行仿真,对仿真结果进行分析,发现交叉口安全性得到了提高,验证了模型评价交叉口改善措施的有效性。
[Abstract]:With the development of economy, pedestrian traffic safety is becoming more and more serious. At present, the condition of pedestrian crossing traffic on urban roads in our country is poor, and the death toll of walking traffic mode is high. Especially at some signalized intersections, the turning behavior of right-turn motor vehicles is not controlled by signals, so it is easy to conflict with pedestrians crossing the street. Even traffic accidents lead to the low efficiency of the intersection, and then affect the whole road network. Therefore, the safety of pedestrians across the street must be paid more attention to. This paper first analyzes the pedestrian crossing situation at signalized intersections in China, and introduces the current research status of pedestrian and right-turn vehicle conflicts at home and abroad. Based on pedestrian traffic characteristics and right-turn vehicle traffic characteristics, the conflict area between pedestrians and right-turn motor vehicles is determined, and the conflicts are classified into five categories according to pedestrian crossing type. A video detection method was used to investigate the traffic characteristics of typical intersections, and based on the traffic conflict data of pedestrians and right-hand interchanges, the effects of conflicts on traffic characteristics were studied. At the same time, the conflict severity model of right-turn vehicle and pedestrian is established to calculate the conflict severity of intersection investigated. Then, based on the analysis of conflict characteristics and conflict severity, a comprehensive simulation model of right-turn motor vehicle and pedestrian conflict motion process, including right-turn vehicle trajectory, is proposed from the point of view of studying the turning process and decision-making process of right-turn motor vehicle. The velocity model and acceptable clearance model are used to study the interaction process of vehicle and human conflict. The simulation results of VISSIM show that the model is effective. Finally, the safety promotion countermeasures of intersection are studied. Taking the intersection of Zhongshanmen Street and Shengli Village Road as an example, the simulation model is used to simulate the improved intersection, and the simulation results are analyzed, and it is found that the security of the intersection has been improved. The effectiveness of the model to evaluate the intersection improvement measures is verified.
【学位授予单位】：南京理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：U491.23

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