Two-stage model for optimizing traffic signal control plans of signalized Superstreet
Two-stage model for optimizing traffic signal control plans of signalized Superstreet
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DOI：
10.1080/23249935.2018.1559894
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发表时间：
2018-12
期刊：
影响因子：
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通讯作者：
Liu Xu;X. Yang;G. Chang
中科院分区：
文献类型：
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作者：
Liu Xu;X. Yang;G. Chang
摘要 尽管超级街道的实施不断增加，但仍然没有可靠的方法来设计其信号规划。为了考虑超级街道的独特几何特征，本研究提出了一种两阶段信号优化方法，其中第一阶段确定每个子交叉口的最佳信号计划，第二阶段优化信号协调的偏移。采用混合整数线性规划（MILP）技术进行模型制定，第一阶段的目标是最大化总交通吞吐量，第二阶段的目标是最大化带宽并最小化次要道路驾驶员所经历的延迟。为了评估所提出模型的有效性，该研究进一步使用根据马里兰州收集的现场数据校准的模拟进行信号性能评估。大量实验测试的结果表明，所提出的模型可以有效地为重型直行和左转运动提供信号进展，并防止超级街道的四个紧密间隔的子交叉口之间潜在的队列溢出。
ABSTRACT Despite the increasing implementations of Superstreets, a reliable method to design their signal plan remains unavailable. To account for the unique geometric features of Superstreets, this study presents a two-stage signal optimization method where the first stage determines the optimal signal plan for each sub-intersection and the second stage optimizes the offset for signal coordination. Implementing the Mixed-Integer-Linear-Programming (MILP) technique for the model formulation, the first stage has the objective of maximizing total traffic throughput and the second stage aims to maximize the bandwidths and minimize the delay experienced by the minor road drivers. To assess the proposed model’s effectiveness, the study further conducts signal performance evaluations using simulation calibrated with field data collected in Maryland. The results of extensive experiment tests reveal that the proposed model can effectively offer signal progressions to both heavy through and left-turn movements, and prevent the potential queue spillback among a Superstreet’s four closely-spaced sub-intersections.