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先进的交通信号控制系统的核心是控制策略及参数模型,而信号相位设计是交通信号设计中最具有创造性的部分,也是控制策略实现前提条件。针对目前城市干线交通拥挤现状,提出了一种基于NEMA相位的灵活相位相序协调控制优化方案,并给出了相应的设计原则,再在MAXBAND核心数学模型上给出了基于灵活相位的双向绿波带宽最大化模型。最后通过实例验证分析表明,相对于传统相位相序策略,灵活相位策略具有一定的优越性,而且该策略能够有效提高干线的通行效率,减轻城市交通堵塞。
The core of advanced traffic signal control system is the control strategy and parameter model, and the signal phase design is the most creative part of traffic signal design and also the prerequisite for the realization of control strategy. Aiming at the present situation of traffic congestion in urban main lines, a flexible phase and phase sequence coordinated control optimization scheme based on NEMA phase is proposed and the corresponding design principles are given. Then, based on the MAXBAND core mathematical model, bi-directional green based on flexible phase Wave Bandwidth Maximization Model. Finally, an example verification analysis shows that, compared with the traditional phase-sequence strategy, the flexible phase strategy has some advantages. Moreover, this strategy can effectively improve the traffic efficiency and reduce traffic congestion in the city.