城市道路交通主动控制系统与模型设计

为实现城市道路交通管控的智能化,缓解交通拥堵,研究和设计了城市道路交通主动控制系统.系统由4个子系统构成,其中云-边-端支撑子系统是计算、通信和存储的基础,可视化软硬件在环子系统是指挥决策与演练的关键,实时控制子系统和实时仿真子系统是道路交通控制的核心,用以保障交通控制的实时性和先进性.系统采用基于时空资源分配的主动控制模型,将传统以周期、绿信比调节为核心的交叉口信号被动控制转变为车道可变、相位相序可调且具有链状连接特性的交叉口主动控制.实际数据仿真分析表明,系统的主动控制能够有效降低交叉口通行车辆的总行程时间和平均排队长度.

Design on active control system and model of urban road traffic

This paper proposes an active control system for urban road traffic,with the purpose to provide a new way to realize the intelligent control of urban traffic and alleviate traffic congestion.The system is composed of four subsystems.The cloud-side-end support subsystem constitutes the basis of computing,communication and storage.The visualized hardware- and software-in-the-loop subsystem is the key to command,make decision,and exercise in traffic control.The real-time control subsystem and real-time simulation subsystem constitute the core of traffic control operation,which can guarantee the real-time and advanced traffic control.Instead of traditional passive control of intersection signals relying on cycle and green ratio adjustment,the system adopts an active control of intersections characterized with variable lanes,adjustable phase sequence and chain connection features.Experimental analysis shows that the system can effectively reduce the total delay time and average queue value of vehicles waiting on the traffic lights at the intersection.