面向大型社会活动的快速路网控制策略仿真评价方法*

为了缓解大型社会活动期间短时需求激增对快速路运营的压力，提出了基于宏观交通仿真的快速路网控制策略评价方法，旨在为交通控制与管理提供辅助决策依据。该方法运用网络交通流仿真模型对候选控制方案进行仿真和评价，得到较优方案。采用GANFreSP仿真程序对一实例路网的交通流演化进行仿真，刻画拥挤发生、传播和消散的过程，并模拟基于分流诱导的拥堵应对策略，给出交通状态时变轨迹图、路网全局交通状态快照图等可视化结果，以及不控制和分流诱导情况下的路网总体性能指标。仿真案例表明，网络交通流演化是复杂动态过程，局部节点拥挤易演

Large social event oriented freeway network control strategy simulation evaluation approach

In order to release freeway congestion caused by large social events, this paper presented a control strategy simulation evaluation approach based on macroscopic traffic simulation, providing a support to traffic control and management. This approach used network traffic flow simulation model to investigate and evaluate candidate control strategies, and recommend optimal strategy. Used GANFreSP simulation tool to depict occurrence, propagation, and dissolving of congestion in a simulated freeway network, and simulated the effects of route guidance strategy, and presented traffic state trajectories, snapshots of global network state, and overall performance indexes. Research results show that local congestion always evolves into network-level traffic collapse, and appropriate control of freeway network is necessary to improve the operational efficiency of the network.