摘要
城市道路平面交叉口是城市交通中的瓶颈,随着交通量的迅猛增长,城市平面交叉口的拥堵情况经常发生.借助一定的交通仿真手段,寻求合理的优化信号设计方案是解决这一问题的有效方法.以兰州市"滨河北路—宝石花路"的T形交叉口为例,借助VISSIM交通仿真软件,寻求其优化信号设计方案,并对方案进行评价.分析结果表明,该信号设计方案能有效地减少车辆延误时间和车辆排队队长,车辆平均延误时间缩短25s,平均排队长度减少了26m,有效地提高了平面交叉口的通行能力.
Urban road intersections are the traffic bottleneck in cities and with the rapidly increasing volume of urban traffic,the congestion at urban road intersection often occurs.With the help of the traffic simulation software,a proper design of an optimal signals can be an effective way to solve this problem.Taking the T-shaped intersection of ＂north Binhe road and Baoshihua road＂ in Lanzhou for example,the traffic simulation software VISSIM can be used to make the optimized project,and to evaluate it.The results show that the design of the signals can be effective in reducing the delayed time and queuing length of the vehicles,and the traffic capacity can be improved dramatically.
出处
《甘肃科学学报》
2012年第4期131-134,共4页
Journal of Gansu Sciences
基金
国家自然科学基金项目(61064012)
