经典干道多绿波带宽协调控制模型的改进

Improvement of Typical Multi-band Model for Arterial Traffic Signal Progression

MULTIBAND是经典的干道多带宽绿波协调控制模型。然而,MULTIBAND模型本身仍存在一些不足,如带宽权重因子与带宽比例系数均需要进一步细化、绿波带中心线左右严格对称这一约束过于严苛、初始排队清空时间的空间位置需要重新定义及相序模式优化空间需要进一步扩展。针对上述不足之处,对经典的MULTIBAND模型进行改进,提出了改进的MULTIBAND模型。最后以一算例对所提的改进MULTIBAND模型进行验证,绿波带宽分析结果表明所提改进MULTIBAND模型能够使得理论求解结果与实际绘制结果相一致,仿真实验结果表明所提改进MULTIBAND模型能有效降低车辆的综合运行性能指标(平均延误时间和平均停车次数的加权之和),从而验证了所提改进模型的有效性与实用性。

MULIBAND is a typical multi-band model for arterial traffic signal progression.However,there are still some problems in the MULTIBAND model,such as the weighting coefficients and the ratio coefficients of bandwidth need to be defined precisely,the constraints that the centerline of progression band must be symmetric are too strict,the spatial position of the initial queuing clearance time needs to be redefined and the optimization space of phase sequence needs to be extended.Considering the above deficiencies,improvements are made to the MULTIBAND model and then an improved MULTIBAND model is developed.Finally,the improved MULTIBAND model is verified with a numerical example.The results of bandwidth show that the improved MULTIBAND has the ability to make the bandwidth obtained by theoretical calculations coincide with the one obtained by actual plotting and the simulation results show that the improved MULTIBAND can effectively reduce the comprehensive performance indexes(the summation of weighted average delay time and average number of stops),which confirms its effectiveness and practicality.