考虑排队动态演化过程的两相位交叉口最小延误解析研究
Analytical investigation on the minimum traffic delay at a two-phase intersection considering the dynamical evolution process of queues
摘要：
研究了两相位交叉口的最小延误问题，考虑了排队的动态演化过程。研究了延误函数的性质，指出当两个约束条件中至少有一个满足等式时，必须使交通延误最小。我们推导出了最小延误以及相应的交通信号周期，这表明两种情况是分类的。在某些情况下，一个相位需要额外的绿灯时间，否则两个相位不应分配额外的绿灯时间。我们的工作表明，虽然清除政策在许多实验中被证明是最佳的在孤立的交叉口，它有时并非如此。
英文摘要：
This paper has studied the minimum traffic delay at a two-phase intersection, taking into account the dynamical evolution process of queues. The feature of delay function has been studied, which indicates that the minimum traffic delay must be achieved when equality holds in at least one of the two constraints. We have derived the minimum delay as well as the corresponding traffic signal period, which shows that two situations are classified. Under certain circumstance, extra green time is needed for one phase while otherwise no extra green time should be assigned in both phases. Our work indicates that although the clearing policies were shown in many experiments to be optimal at isolated intersections, it is sometimes not the case.
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