【摘要】：交通事故是引起城市快速路擁堵的主要原因之一,多匝道協(xié)調(diào)控制作為連續(xù)交通流道路管理控制的主要策略,現(xiàn)有研究面向一般管控,不涉及交通事故。在STNS模型的基礎(chǔ)上,建立由多匝道和主線組成的城市快速路協(xié)調(diào)控制元胞自動機模型,對事故點上游實施不同匝道控制信號策略的交通流特性進行了仿真,分析不同需求下分別采用不同的信號控制方式對道路交通流的影響。仿真結(jié)果表明,多匝道協(xié)調(diào)控制作為管理的基本手段,只有針對不同需求和交通狀態(tài)采取不同的控制信號施加策略,才可最大限度地減輕由于事故所造成的擁堵影響,從而實現(xiàn)提高道路流量的目的。
[Abstract]:Traffic accident is one of the main causes of urban expressway congestion. The coordinated control of multi-ramp as the main strategy of continuous traffic flow road management control, the existing research is oriented to general control, does not involve traffic accidents. Based on the STNS model, the cellular automata model of coordinated urban expressway control is established, which consists of multiple ramps and main lines, and the traffic flow characteristics of different ramp control signal strategies in the upper reaches of the accident point are simulated. The influence of different signal control methods on road traffic flow is analyzed. The simulation results show that as the basic means of management, the multi-ramp coordinated control can minimize the congestion caused by the accident only by adopting different control signals according to different needs and traffic conditions. In order to achieve the purpose of increasing road flow.
【作者單位】： 河北工業(yè)大學(xué)土木與交通學(xué)院;
【基金】：國家自然科學(xué)基金項目(50478088) 河北省自然科學(xué)基金項目(E2015202266)
【分類號】：U491

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