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The Identification of Virtual Traffic Bottleneck Based on Traffic Equilibrium Assignment

机译：基于流量均衡分配的虚拟交通瓶颈识别

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摘要

Effective identification of traffic network bottlenecks is a fundamental aspect of preventing traffic congestion and ameliorating traffic network conditions. In this paper, bottlenecks have been analyzed systematically based on traffic equilibrium assignment theory, and we propose a simplified and traffic network method with the groups as virtual nodes and traffic channels between groups as virtual links; based on the virtual traffic network, the model of traffic equilibrium assignment is used to obtain the virtual traffic network's equilibrium flow. The ratio of virtual road network's equilibrium flow and its capacity is set as the corresponding parameter, compared with the standard of bottleneck identification to identify the bottleneck. The proposed model is employed in simulating congestion bottleneck identification under different traffic demands. Additionally, we use the traffic network of Nanjing urban districts as a case to verify the feasibility of the method of virtual traffic networks to identify network bottlenecks.
机译：有效识别交通网络瓶颈是防止交通拥堵和改善交通网络状况的基本方面。本文基于流量均衡分配理论对瓶颈进行了系统的分析，提出了一种以群组为虚拟节点，群组之间的流量通道为虚拟链接的简化的流量网络方法。基于虚拟交通网络，利用交通均衡分配模型获得虚拟交通网络的均衡流量。将虚拟路网的平衡流量与通行能力之比设为相应的参数，并与瓶颈识别标准进行比较以识别瓶颈。该模型用于模拟不同流量需求下的拥塞瓶颈识别。另外，以南京市区的交通网络为例，验证了虚拟交通网络识别网络瓶颈的方法的可行性。

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