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为了提升交通事故发生后高速路网对突发事件的应对能力,减少区域路网受交通事故影响的时间,降低交通事故带来的损失,开展交通诱导策略研究。将交通事故的影响范围按点、线、面3个层次进行划分,分别利用公路养护施工控制区设置经验及规范要求、交通流理论、路径阻抗计算与行驶时间对比的研究方法,定量确定点、线、面3个层次的事故影响区。按诱导分流点、管制诱导点和强制诱导点3种级别划分和优选点、线、面事故影响区内的道路节点。以杭金衢(杭州—金华—衢州)高速公路事故为例进行分析,找到区域路网内的各级诱导节点,验证了研究方法的可行性。研究结果表明:在区域高速路网拓扑关系的基础上,结合其交通量、车速、通行能力数据以及交通事故现场状况分析,能快速确定事故影响区范围;采用提出的方法可分层次针对优选路网节点提出交通控制策略,提高了事故处置效率。
In order to enhance the emergency response ability of the expressway network after the traffic accident, reduce the time affected by the traffic accident in the regional road network, reduce the traffic accident losses and carry out traffic guidance strategy research. The impact scope of traffic accident is divided into three levels according to point, line and surface. Based on the research methods of setting experience and regulation requirements of traffic control construction zone, traffic flow theory, path impedance calculation and driving time comparison, Line, surface three levels of the impact area. According to the induced diversion point, the control induced point and the forced induction point, the three levels of division and the optimal point, line and surface impact area road nodes. Taking the Hangjinqu (Hangzhou-Jinhua-Quzhou) expressway accident as an example, the induction nodes at all levels in the regional road network are found, and the feasibility of the research method is verified. The research results show that based on the topological relations of regional highway network and the analysis of its traffic volume, vehicle speed, traffic capacity data and scene analysis of traffic accidents, the scope of the accident zone can be quickly determined. The proposed method can be applied to different levels of priority roads Network nodes proposed traffic control strategies to improve the efficiency of accident handling.