信号交叉口多路左转车辆释放特性及危险变道行为研究

发布时间：2018-04-26 21:38

本文选题：多路左转 + 释放特性　；参考：《吉林大学》2017年硕士论文

【摘要】：随着左转需求的增加,在大型交叉口多采用多路左转车道组的设置形式,并且在城市立交桥下,为了充分利用桥下资源,也多设置桥下多路左转;多路左转车道组相比以往的单车道设置,不仅车道数增加,而且车道分布也不再像传统的靠左设置,出现了分离式、并列式等复杂的设置形式;由于左转车辆在驶过入口停止线进入交叉口后,缺乏严格的标线约束,在左转车道组左转车辆释放过程中,左转车辆并不是各行其道,而是在释放过程中存在交织、换道等复杂的驾驶行为,这些不正当驾驶行为不仅会降低行驶的安全性,而且还会影响通行效率。因此为了更加合理得调整左转车辆的释放形式,规范驾驶员的驾驶行为,提高整个交叉口的通行效率,需要对左转车辆释放过程中的驾驶行为特性及变道发生时车辆间的位置关系特征进行研究。在总结前人研究的基础上,本文通过调查长春市典型交叉口的左转相关数据,进行对比分析,从宏观和微观两个方面来阐述了左转车辆释放特性;建立了交叉口内左转换道最小安全距离模型,并建立了考虑横向移动的OV模型,针对交叉口内左转车辆变道过程中发生的横向移动对后续车流的影响进行了分析。主要完成工作如下:(1)左转车辆宏观特性分析以长春市选取的6个不同组成形式的典型交叉口的实际调查数据为基础,应用数据统计对左转车辆释放过程中的排队选择特性、提前转弯特性以及速度分布特性进行了宏观分析,阐述了左转释放期间,车辆的宏观运行特性。(2)左转车辆微观特性分析利用轨迹提取软件针对左转释放过程中车辆的行驶轨迹进行提取,分析了左转释放过程中车辆轨迹重合和偏移特性;并且剖析了周期内不同时段车辆的换道行为特性,此外,还针对换道行为车辆的速度、车头时距分布进行了研究。(3)危险变道行为分析通过对交叉口内左转危险变道行为进行解析,找出与变道车辆紧密相关的三个相邻车辆,建立了最小安全距离模型,探究了加速度与临界碰撞时间对最小安全距离的影响;改进了OV模型,并且通过数据仿真,模拟出左转车辆在变道过程中发生的横向偏移对邻近车辆的干扰特性。
[Abstract]:With the increase of left turn demand, many left lane groups are set up at large intersections, and in order to make full use of the resources under the bridge, many left turns under the bridge are set up under the city overpass. Compared with the previous single-lane setting, the multi-lane left-turn lane group not only increases the number of lanes, but also the lane distribution is no longer like the traditional left-side setting, there are many complicated settings, such as separation, juxtaposition and so on. Due to the lack of strict marking constraints after the left-turn vehicle passes through the entrance stop line and enters the intersection, during the left-turn vehicle release process, the left-turn vehicle does not go its own way, but interweaves in the release process. These improper driving behaviors not only reduce the safety of driving, but also affect the traffic efficiency. Therefore, in order to adjust the release form of the left-turn vehicle more reasonably, regulate the driver's driving behavior, and improve the traffic efficiency of the whole intersection, It is necessary to study the characteristics of driving behavior and the position relationship between vehicles in the course of left-turn vehicle release. On the basis of summing up the previous studies, this paper makes a comparative analysis of the left-turn data of the typical intersection in Changchun, and expounds the characteristics of the left-turn vehicle release from the macro and micro aspects. The minimum safe distance model of the left transition track in the intersection is established, and the OV model considering the lateral movement is established. The influence of the lateral movement of the left turn vehicle in the intersection on the subsequent traffic flow is analyzed. The main work to be completed is as follows: 1) the macro characteristics of left-turn vehicles are analyzed. Based on the actual investigation data of six typical intersections with different components selected in Changchun City, the queuing selection characteristics of left-turn vehicles during the release process are analyzed by using data statistics. The characteristics of forward turning and velocity distribution are analyzed macroscopically, and the period of left turn release is expounded. Analysis of the microscopic characteristics of the left turn vehicle the track extraction software is used to extract the track of the vehicle during the left turn release process, and the coincidence and offset characteristics of the vehicle track during the process of the left turn release are analyzed. In addition, the characteristics of vehicle changing behavior in different periods of the cycle are analyzed. In addition, the speed of the vehicle is also analyzed. Analysis of dangerous change of track behavior in intersection by analyzing the behavior of dangerous change of track in the intersection, three adjacent vehicles closely related to the vehicle are found out, and the minimum safe distance model is established. The influence of acceleration and critical collision time on the minimum safe distance is investigated, and the OV model is improved, and the interference characteristics of the lateral offset of the left-turn vehicle to the adjacent vehicle during the course of changing track are simulated by data simulation.
【学位授予单位】：吉林大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：U491

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