干线协调控制下适用左转待转区的信号配时研究

Research on Signal Timing Applicability of Left-turn Waiting Area Under Signal Coordination Control

基于MAXBAND方法量化相序对相位差的影响,依据不同相序下的相位差与行程时间的关系构建绿波带在最小协调相位内的偏移模型,在保证干线协调控制效果的条件下,进一步明确干线交叉口适用左转待转区的绿信比范围,并结合武汉市解放大道上两个连续设置左转待转区的交叉口进行案例分析.结果表明:在该方法获得的左转待转区适用范围内,交叉口均设置lag-lag相序相较于未全部设置lag-lag相序的情况平均带宽增加6.67%,平均排队长度与平均行程延误分别降低6.73%和15.03%.

Based on MAXBAND method,the influence of phase sequence on phase difference was quantified,and the migration model of green wave band in the minimum coordinated phase was constructed according to the relationship between phase difference and travel time under different phase sequences.Under the condition of ensuring the coordinated control effect of trunk lines,the green signal ratio range of the left-turn waiting area at trunk intersections was further defined.Combined with two intersections on Jiefang Avenue in Wuhan,a case study was made.The results show that,within the applicable range of the left turn waiting area obtained by this method,the average bandwidth is increased by 6.67%,and the average queue length and average travel delay are reduced by 6.73%and 15.03%respectively when lag-lag phase sequence is set at intersections.