摘要
为明确互通立交匝道的运行特性和驾驶风险,在重庆市南山立交和江南立交开展了超过30位被试者的小客车实车驾驶试验,通过Speedbox和Mobileye等车载高精度仪器采集了小客车在4条迂回式匝道上的连续运行数据,包括行驶速度、横向加速度、纵向加速度等,明确了迂回式匝道的车辆运行状态,然后运用表征横、纵向加速度关系的G-G图分析了匝道行驶过程中的驾驶风险,确定了立交匝道不同位置的危险等级及危险驾驶行为的高发路段。研究结果表明:①立交匝道上小客车的横向加速度与速度呈三角形分布,纵向加速度与速度呈椭圆形分布;②小半径曲线匝道上出现危险驾驶行为的比例要高于大半径曲线匝道;③通过统计不同断面的危险驾驶行为点占比,将匝道的危险断面分为低风险、中风险、高风险3个等级;④男性驾驶员在立交匝道上的危险驾驶行为占比要高于女性驾驶员,冒险型驾驶员的危险驾驶行为占比要高于其他驾驶风格的驾驶员;⑤立交匝道的危险高发路段通常位于速度变化剧烈的路段,即入弯减速段和出弯加速段。
More than 30 participants are tested in actual passenger-car driving test at Nanshan Interchange and Jiang⁃nan Interchange in Chongqing to clarify the operating characteristics and driving risks of interchange ramps.Using high-precision equipment such as Speedbox and Mobileye,the continuous running data of passenger cars on four roundabout ramps are collected,including driving speed,lateral acceleration,and longitudinal acceleration.The run⁃ning statuses of vehicles on roundabout ramps are specified.Besides,the G-G diagram,characterizing the relationship between lateral and longitudinal acceleration,is used to analyze the driving risk during ramp driving.The danger lev⁃els at different positions of the interchange ramps and the high-risk sections of dangerous driving behavior are determined.The results show that:①The lateral acceleration and speed of the passenger cars on the interchange ramps are distributed in a triangle,and the longitudinal acceleration and speed are distributed in an elliptical shape.②The pro⁃portion of dangerous driving behaviors on small radius curve ramps is higher than that on large radius curve ramps.③By counting the proportions of dangerous driving-behavior points of different sections,the dangerous sections of the ramps are divided into low risk,medium risk,and high risk.④Male drivers have a higher proportion of dangerous driving behaviors on the interchange ramps than female drivers,and adventurous drivers have a higher proportion of dangerous driving behaviors than that of drivers of other driving styles.⑤The dangerous high-incidence road sections of interchange ramps are usually located in the sections with drastic speed changes,namely the deceleration section of the turn and the acceleration section of the exit.
作者
丁瑞
刘俊
蒋艳
徐进
DING Rui;LIU Jun;JIANG Yan;XU Jin(College of Traffic&Transportation,Chongqing Jiaotong University,Chongqing 400074,China;Chongqing Rail Transit(Group)Co.,Ltd,Chongqing 400042,China;Sichuan Nanyu Expressway Co.LTD.,Nanchong 637000,Sichuan,China;Chongqing Key Laboratory of“Human-Vehicle-Road”Cooperation and Safety for Mountain Complex Environment,Chongqing Jiaotong University,Chongqing 400074,China)
出处
《交通信息与安全》
CSCD
北大核心
2021年第1期17-25,共9页
Journal of Transport Information and Safety
基金
国家自然科学基金项目(51678099)资助。
关键词
交通安全
立交匝道
驾驶行为
G-G图
行驶速度
横向加速度
纵向加速度
traffic safety
interchange ramp
driving behaviors
G-G diagram
driving speed
lateral acceleration
longitudinal acceleration
