摘要
以山区公路上设置的某一爬坡车道为试验对象,利用驾驶模拟试验对其交通特性及驾驶安全性进行仿真。根据设计图和现场环境构建了三维虚拟试验场景,通过VISSIM生成试验路段交通流;32名受试者在4种交通条件下进行了驾驶模拟试验;模拟过程中记录车辆的速度、轨迹、加速度、制动力等数据;通过VISSIM仿真试验确定了该爬坡车道的交通量阈值。分析结果表明,在常规交通流情况下,该爬坡车道可提高主路上的车速及其平稳性,同时可减少来自对向车道的冲突;但随着交通流量趋于饱和,其有效性逐渐减弱甚至产生负面影响。
This study was conducted by means of a driving simulator experiment to examine the traffic characteristics and driving safety of a climbing lane on a rural highway. The 3D virtual scenarios were constructed by the design drawing and real surroundings with simulated traffic flows from VISSIM. 32 subjects were selected to drive on the test road with driving simulator under 4 scenarios. Some evaluation analyses were performed on the basis of the simulation results of speed, track lateral position, acceleration and driving braking force. The threshold of traffic volume of the climbing lane was set by VISSIM simulation experiment. The result shows that （ 1 ） there is a higher and steady speed after setting a climbing lane under usual traffic volumes, it reduces conflicts with cars from the opposite direction; （2） this benefit will be reversed with traffic volumes approaching to saturated volume.
出处
《公路交通科技》
CAS
CSCD
北大核心
2010年第11期122-126,共5页
Journal of Highway and Transportation Research and Development
基金
公路交通安全技术交通行业重点实验室开放课题资助项目
关键词
交通工程
交通特性
模拟评价
爬坡车道
驾驶模拟器
VISSIM
交通安全
traffic engineering
traffic characteristics
simulation evaluation
climbing lane
driving simulator
VISSIM
traffic safety
