城市道路强行并线分析研究

发布时间：2018-03-27 15:14

本文选题：城市道路　切入点：强行并线　出处：《长安大学》2015年硕士论文

【摘要】：在汽车行驶过程中,强行并线会对城市道路交通带来不利影响,也易造成交通事故。近年来随着我国机动车保有量的持续增长,城市道路强行并线问题愈发明显。本文根据强行并线的特性给出了城市道路强行并线的定义,并对其进行了解释。在对车辆并线轨迹进行分析之后,确定了对城市道路强行并线的判定方法:在自由流、稳定流、饱和流时可依据并线安全车距进行判断;在强制流情况下,应当主要依据并线动作的突然性进行判断。安全车距分为高车速下的安全车距和低车速下的安全车距,两者以30km/h为分界线。在推导出并线安全车距后,给出了并线安全车距值,可作为判定强行并线的参考。对于并线动作的突然性,主要从转向灯使用、并线行为车的加速度、速度和并线转角三方面综合考量。另外,从道路通行能力、行车舒适性的角度出发,本文还提出了一种根据后车车速变化百分比来判定强行并线的设想。城市道路强行并线产生的原因主要有驾驶员安全意识、法制意识淡薄,新手驾驶员较多,城市道路交通拥堵等;根据行驶速度、并线动机、并线路段等可将城市道路强行并线作多种划分。在对西安市多条城市道路进行调查统计后,总结出了城市道路强行并线的规律,用强行并线与正常并线进行对比,计算出了西安市强行并线、正常并线发生率,统计出了西安市强行并线与正常并线用时和转向灯的使用率,总结出了城市道路强行并线与车型的关系和车道分布规律;测出了强行并线前后车的速度,并对前后车速度关系进行了分析。本文运用交通冲突理论从车辆频繁强行并线、交叉口车辆强行并线以及不稳定流状态车辆强行并线分析了强行并线对城市道路安全性的影响,以四个强行并线引发的城市道路交通事故做了例证,并针对城市道路强行并线提出了防治措施与建议。
[Abstract]:In the process of automobile driving, the forced merging of lines will bring adverse effects on urban road traffic, and will easily cause traffic accidents. In recent years, with the continuous increase of the number of motor vehicles in China, The problem of forced alignment of urban roads is becoming more and more obvious. This paper gives the definition and explanation of forced alignment of urban roads according to the characteristics of forced merging lines. The method of determining the forced alignment of urban roads is determined: in the case of free flow, steady flow and saturated flow, the judgment can be made according to the safety distance of the parallel line, and in the case of forced flow, The safe vehicle distance is divided into high speed safe car distance and low speed safe car distance. The 30km/h is the dividing line between them. After deducing the parallel line safe car distance, the safety car distance value of parallel line is given, which is divided into two parts: one is the safety vehicle distance at the high speed and the other is the safe car distance at the low speed. It can be used as a reference to judge the forced merging line. For the sudden action of parallel line, it is mainly considered from the angle of acceleration, speed and angle of the vehicle. In addition, from the capacity of the road, the traffic capacity is taken into account in the use of the turn signal, the acceleration, the speed and the angle of the parallel line of the vehicle. From the point of view of driving comfort, this paper also puts forward a tentative idea to judge the forced merging line according to the percentage of change of the rear vehicle speed. The main reasons for the forced merging line in urban roads are the driver's safety consciousness and the weak awareness of the legal system. There are more novice drivers, traffic jams on urban roads, and so on. According to the speed of driving, the motive of parallel lines, and so on, the urban roads can be forced to be divided into many kinds of lines. After the investigation and statistics of many urban roads in Xi'an, This paper sums up the law of forced merging line of urban road, compares it with normal parallel line, calculates the incidence of forced merging line and normal parallel line in Xi'an city. The usage rate of the forced and normal parallel lines and turn signals in Xi'an is calculated, the relationship between the forced parallel lines of urban roads and vehicle models and the distribution law of lanes are summed up, and the speed of vehicles before and after the forced merging lines are measured. Based on the traffic conflict theory, this paper analyzes the influence of traffic conflict on the safety of urban roads from the point of view of the frequent forced merging of vehicles, the forced merging of vehicles at intersections and the forced merging lines of vehicles in unstable flow state. In this paper, the urban road traffic accidents caused by four forced merging lines are exemplified, and the preventive measures and suggestions are put forward.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U491

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