无信号公路平交口支路上游功能区减速驾驶行为研究  

A Study of Deceleration Driving Behaviors at Upstream Functional Areas of Unsignalized Intersections

作　　者：郑元[1,2] 张国强[1,2] 亓玉礼[3] 

机构地区：[1]东南大学城市智能交通江苏省重点实验室,南京210096 [2]东南大学现代城市交通技术江苏高校协同创新中心,南京210096 [3]上海市政工程设计研究总院集团第七设计院有限公司,山东青岛266001

出　　处：《交通信息与安全》2015年第5期62-70,77,共10页Journal of Transport Information and Safety

基　　金：国家自然科学基金项目(批准号:51278103)资助

摘　　要：为分析无信号公路平面交叉口上游功能区车辆通行安全和效率问题,针对驶入交叉口前驾驶员驾驶行为决策过程及其影响因素进行分析。对在南京采用视频采集的数据进行处理,提取驾驶员减速行为的速度和减速度数值并对它们的特性进行定量分析。采用方差分析得出各影响因素对速度、减速度的影响程度,并且建立减速度与各影响因素之间的减速驾驶行为模型。结果表明,车辆在无信号控制公路平交口上游功能区内车速呈现明显的下降趋势,且速度的分布逐渐由离散变得集中;车辆其减速度的变化过程是先变大后变小;初速度VA0、左右转变量被选入模型并对减速模型有显著作用。从而为无信号控制公路平交口交通设计、政策和改善安全提出建设性意见和提供理论基础。In order to study traffic safety and efficiency at upstream functional areas of unsignalized intersections,the decision-making process and its influential factors of driving behaviors before entering into intersections are studied.The data is collected by video in Nanjing,China.The speed and deceleration of decelerating driving behaviors are extracted,and their features are quantitatively analyzed.A variance analysis method is used to estimate the degree of influence of each influential factors on the speed and deceleration,and a model of driving behaviors between deceleration and influential factors is developed.The results show that,the speed of vehicles has an obvious downtrend at upstream functional areas of unsignalized intersections,and speed distribution gradually changes from discrete to centralize.The changing process of vehicles＇ deceleration is from large to small.The initial speed（VA0）and left/right steering rotation angle are selected,and have significant effects on the model.The study provides constructive suggestions and theoretical basis to improve intersection design,traffic policy and the safety.

关 键 词：交通安全 减速行为 减速度 无信号控制公路平面交叉口 上游功能区 影响因素 

分 类 号：U491[交通运输工程—交通运输规划与管理]