摘要
现有线控公共周期确定取决于关键交叉口交通状态,其目的是满足交通状态最差的交叉口不会产生过饱和现象,但未考虑对实际线控效果影响且可能增大其他交叉口延误。文章分析了周期调整对延误和通行能力产生的影响,确定了干线协调下公共周期的调整区间。在此区间内以交叉口实际间距与理想间距偏差为优化目标,采用优选出的鲁棒简面体爬山法优化目标函数实现绿波带最宽。实证表明所提出的优化方法得到的绿波带和平均延误好于数解法,且对通行能力影响很小。
Currently the common cycle of linear signal progression is determined by the critical intersection involved in coordination control, which ensures that the worst intersection will not be oversaturated. However, it does not consider its impact on the progression performance and the delay in other intersections could increase. Therefore, this paper studies the impact of cycle length on the delay and capacity at arterial intersections, and implements simplex method to re- duce the gap between actual and ideal space and to maximize the band of progression. Finally, the numerical example shows the band and delay per vehicle from this optimization method are better than those of existing algorithm with little impact on the intersection capacity.
出处
《交通信息与安全》
2009年第5期10-13,23,共5页
Journal of Transport Information and Safety
基金
国家重点基础研究发展计划项目(批准号:2006CB705505)
国家高技术研究发展计划项目(批准号:2007AA11Z209)资助
关键词
干线协调
公共周期
简面体爬山法
arterial signal progression
common cycle
simplex method
