城市地下道路分合流区变速车道长度研究  

Study on Length of Speed-change Lane in Diverging and Merging Areas of Urban Underground Road

作　　者：王萌 毛琰 狄胜德[1] 张巍汉[1] WANG Meng;MAO Yan;DI Sheng-de;ZHANG Wei-han(Key Laboratory of Road Traffic Safety Technology of Transport Industry,Research Institute of Highway,Ministry of Transport,Beijing 100088,China)

机构地区：[1]交通运输部公路科学研究院公路交通安全技术交通行业重点实验室

出　　处：《公路交通科技》2020年第1期104-114,共11页Journal of Highway and Transportation Research and Development

基　　金：交通运输部公路科学研究所基本科研业务费项目(2016-9003);妈湾跨海通道交通安全关键参数与运营安全方案研究项目(MWKH-ky-002)

摘　　要：为了研究城市地下道路分合流区的变速车道长度,利用先进的8自由度驾驶模拟平台构建三维驾驶模拟仿真环境并开展了驾驶模拟试验,采集了4种主线设计速度条件下、驾驶人在地下道路分合流区内的驾驶模拟试验数据。基于速度、加速度、方向盘转角和行车轨迹构建了一种驾驶行为分析方法,通过该方法分析了驾驶人在地下道路分合流区内的速度调整行为和车道变换行为,并总结其在速度调整区间和车道变换区间的分布规律,基于该分布规律得出地下道路变速车道长度的推荐值。结果表明:在分流区内,驾驶人调整速度和变换车道通常交叉进行,减速区间和换道区间往往部分重合甚至相互包含;而在合流区内,驾驶人通常在结束加速操作前开始变换车道。与熟练驾驶人相比,新手驾驶人在分流区内采取了更为激烈的减速措施,而在合流区内新手驾驶人通常需要更长的加速距离以寻找合适的汇入间隙。与公路及城市道路出入口变速车道规范长度相比,减速车道推荐长度满足公路相关标准规范的规定值,略高于城市地下道路的标准规定值,加速车道推荐长度高于公路及城市道路出入口标准规范的规定值,研究结果可为地下道路规划和设计工作提供参考。In order to research the length of speed-change lane in diverging and merging areas of urban underground road,a 3 D driving simulation environment is constructed by an advanced 8-DOF driving simulation platform to carry out the driving simulation experiment.The experiment data of the driving simulation in the diverging and merging areas of underground road at 4 main line design speeds are collected.A driving behavior analysis method based on speed,acceleration,steering wheel angle and driving trajectory is established,and the speed adjustment behaviors and the lane changing behaviors of drivers in the diverging and merging areas of urban underground road are analyzed accordingly.Then,their distribution rules in the speed adjustment zone and the lane changing zone are summarized.On this basis,the recommended length of change-speed lane is obtained.The result shows that(1)in diverging area,the drivers’speed adjustment behaviors are interleaved with lane change behavior,the deceleration zone and the lane changing zone are often partial overlapped or even mutual included;(2)while in merging area,the drivers’lane changing behaviors often started before ending acceleration operation;(3)compared with skilled drivers,novice drivers take more intense deceleration measures in the diverging area,while novice drivers usually need longer acceleration distances to find the appropriate inflow gap in the merging area;(4)compared with the specified lengths of entrances of highway and urban underground road,the recommended length of the deceleration lane meets the specified value of the related highway standard,which is slightly higher than the specified standard value of the urban underground road.And the recommended length of the acceleration lane is higher than the specified standard value of entrances of highway and urban underground road.The result can provide a reference for underground road planning and designing.

关 键 词：城市交通 地下道路变速车道长度 驾驶行为分析 地下道路分合流区 驾驶模拟器 

分 类 号：U491.234[交通运输工程—交通运输规划与管理]