摘要
左转交通是平面交叉口主要的交通隐患。目前普遍采用的多相位信号虽然能够将相互冲突的车流在时间上分开,减少交通干扰,但同时带来了周期时长过长、进口车道利用率低等弊端。在路口区域较大的交叉口内设置左转机动车等待区,能够减少左转信号时间,达到时间和空间相互转换的目的。文章对左转机动车等待区的设置方法和设置长度进行了初步分析,并通过实例分析对比了左转机动车等待区设置前后的交通效益指标。结果表明:合理设置左转机动车等待区可以缩短周期时长,减小车均延误,提高进口车道的利用率,充分利用交叉口的时空资源。
Left-turning traffic is one of the major hidden dangers at intersections. Although multi-phase signal used widely at intersections could separate conflict traffic in terms of time, but it led to long cycle time and low utilization ratio of approaches.Left-turn vehicles waiting areas established at large crossroads could reduce left-turn signal time and realize reciprocal transformation of time and space, The reasonable layout and the length of approaches of left-turn vehicles waiting area were researched respectively in the paper. An example was employed to reveal the traffic benefit before and after the layout of left-turn vehicles waiting area, The results suggested that the appropriate layout of left-mining vehicles waiting area could reduce per pcu delay increase utilization ratio of approaches and make the best of the space-time resources of intersections.
出处
《公路交通科技》
CAS
CSCD
北大核心
2006年第3期135-138,共4页
Journal of Highway and Transportation Research and Development
关键词
信号交叉口
左转机动车等待区
设置方法
设置长度
交通效益分析
Signalized intersections
Left-turn vehicles waiting area
Layout method
Layout length
Traffic benefit analysis
