基于航拍视频的快速路入口匝道车辆汇入特性研究  

Research on Merging Characteristics of On-Ramp Vehicles at Expressway Based on Aerial Videos

作　　者：葛婷 宗奕净 华凯 胡俊艳 周源 GE Ting;ZONG Yijing;HUA Kai;HU Junyan;ZHOU Yuan(School of Civil Engineering,Suzhou University of Science and Technology,Suzhou 215011,China;Shanghai Municipal Engineering Design Institute(Group)Co.,Ltd.,Shanghai 200092,China)

机构地区：[1]苏州科技大学土木工程学院,江苏苏州215011 [2]上海市政工程设计研究总院(集团)有限公司,上海200092

出　　处：《物流科技》2024年第24期78-82,共5页Logistics Sci Tech

基　　金：国家自然科学基金(51808370,51778242);江苏省高等学校自然科学研究项目(18KJB580015);同济大学道路与交通工程教育部重点实验室开放基金资助(ZL3148);苏州科技大学校科研基金青年项目(XKQ201601)。

摘　　要：为了研究不同交通流状态下快速路入口匝道车辆汇入特性,采用无人机设备在200米高空对快速路入口合流区进行航拍,利用Tracker软件提取入口匝道车辆汇入轨迹和运行参数。以入口匝道车辆换道持续时间、换道距离以及汇入位置作为其汇入特性表征指标进行分析。研究发现:入口匝道车辆换道持续时间和换道距离的均值分别为6.96s和80.17m;高峰时段和平峰时段的换道持续时间的均值分别为8.92s和5.94s,不同时段的换道时间均服从对数正态分布;不同交通流状态下入口匝道车辆汇入主线的汇入位置存在明显差异,平峰时段大部分入口匝道车辆在加速车道段均匀汇入,高峰时段入口匝道车辆主要集中在加速车道前端和渐变段汇入。In order to study on-ramp vehicles'merging characteristics at expressway entrance area under different traffic flow conditions,unmanned aerial video equipment is used to take merging data at expressway entrance areas at 200m altitude.Tracker software is used to extract vehicles'trajectory and operation parameters.Lane change duration,lane change distance and merging position of on-ramp vehicles are analyzed as merging characteristic indexes.The results show that mean values of lane change duration and lane change distance of on-ramp vehicles are 6.96s and 80.17m,respectively.The mean values of lane change duration during peak and off-peak hours are 8.92s and 5.94s,respectively.The lane change time of different periods obeys the lognormal distribution.The merging location of on-ramp vehicles under different traffic flow conditions differ significantly.During off-peak period,most on-ramp vehicles merge evenly at the acceleration lane section,while during the peak period,on-ramp vehicles mainly merge at the front of the acceleration lane and the transition section.

关 键 词：快速路 入口匝道 换道持续时间 汇入位置 

分 类 号：F50[经济管理—产业经济] U491.1[交通运输工程—交通运输规划与管理]