双协调相位时差优化模型

Optimum Models of Time Difference of Double-Coordinated Phases

利用直线式单协调相位模型设计出的方案与实际交通状况不符,线控效率低下.折线式单协调相位模型与实际交通吻合较好,但是理想信号间隔较大.折线式双协调相位模型大大地缩短了理想信号间距(即线控绿时损失),使长距离多交叉口双向协调控制成为可能,但该模型尚未建立时差优化模型.建立双协调相位时差优化模型,并通过具体的实例说明模型的算法和效果.

The program designed by using the linear model of single-coordinated phase is in disagreement with the actual traffic conditions and the arterial coordinated control is inefficient. The polyline model of singlecoordinated phase is in harmony with the actual traffic, but the ideal signal distance is too faraway. The polyline model of double-coordinated phase greatly reduces the ideal signal distance （green time loss of arterial coordinated control）. The two-way coordinated control over long-distance multi-intersections is possible. But the polyline model of double-coordinated phase does not establish the optimum model of time difference. In this paper, the optimum model of time difference of double-coordinated phase is established. The algorithm and results of the optimum model of time difference of double-coordinated phase are illustrated by a specific example.