Fluctuations in traffic flows at isolated intersections throughout the day have a negative impact on the control effects of certain traffic signal control methods. To solve this problem, adaptive signal control of isolated intersections based on sequential signal-stage optimisation is proposed under a multi-stage optimal decision framework to reduce vehicle delays and increase traffic efficiency. In this paper, to maximise the traffic capacity of an intersection during a signal stage, a primary and secondary control mechanism is designed in which the signal-stage phase (SSP) is composed of primary and secondary compatible phases. The SSP can be dynamically obtained and its maximum duration can be determined in a predictable manner. The terminal conditions are also designed to end the current SSP in a timely manner to increase the traffic throughput of an isolated intersection during a signal cycle. For easier understanding, the adaptive signal control algorithm is elaborated in detail. Numerous simulation experiments were performed in the Vissim 5.4 software program and the simulation results demonstrated that, compared with fixed timing control, segmented timing control and fully actuated control, the proposed control method can clearly reduce the average vehicle delay and the impact on average vehicle stops is acceptable.

中文翻译：

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基于序列信号级优化的孤立交叉口自适应控制

孤立路口全天交通流量的波动对某些交通信号控制方法的控制效果产生负面影响。针对这一问题，在多阶段最优决策框架下，提出了基于序列信号阶段优化的孤立交叉口自适应信号控制，以减少车辆延误，提高通行效率。在本文中，为了在信号阶段最大限度地提高交叉口的通行能力，设计了一种主次控制机制，其中信号阶段阶段（SSP）由主次兼容阶段组成。SSP 可以动态获得，其最大持续时间可以以可预测的方式确定。终端条件还旨在及时结束当前的 SSP，以增加一个信号周期内孤立交叉口的交通吞吐量。为了便于理解，详细阐述了自适应信号控制算法。在Vissim 5.4软件程序中进行了大量仿真实验，仿真结果表明，与固定正时控制、分段正时控制和全驱动控制相比，所提出的控制方法可以明显降低平均车辆延误和对平均停车的影响。是可以接受的。