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A junction-by-junction feedback-based strategy with convergence analysis for dynamic traffic assignment



By considering the traffic assignment problem as a control problem, this paper develops a new realtime route guidance strategy for accurate convergence of the traffic flows to user equilibrium (UE) or system optimum (SO), in the presence of drivers’ response uncertainties. With the new guidance strategy, the drivers make routing decisions based on the route guidance information from junction to junction. Specifically, instead of total travel cost of every route from origin to destination, the travel cost of every alternative link plus the average cost to destination from the next junction corresponding to the alternative link is sent to the drivers at each specific junction. The drivers’ response to the route guidance information is directly modeled by the splitting rates at the junctions, which are simply negatively correlated with the comparison of related cost information and are able to take into account the drivers’ response uncertainties. With the proposed route guidance strategy, in the case of fixed travel demands, the accurate convergence of the traffic flows to a UE is guaranteed in the presence of drivers’ response uncertainties by using LaSalle’s invariance principle. When marginal travel cost information, instead of travel cost information, is sent to the drivers, a system optimum can be achieved under a mild condition on the marginal cost function.


本文提出了一个新的基于结点动态交通分配策略的轻松驾驶响应模型。具体地,驾驶员对路径引导信息的响应是直接有结点的分裂率表示的,它与相关成本信息进行比较,满足简单的负相关性。文中提到的动态交通分配策略,利用 LaSalle 不变性原理保证了交通流量趋于一个用户平衡。当边际出行成本信息用来代替出行成本信息时,目标函数在温和的条件下可以获得系统优化。


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Correspondence to Tengfei Liu or Xuesong Lu or Zhong-Ping Jiang.

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Liu, T., Lu, X. & Jiang, Z. A junction-by-junction feedback-based strategy with convergence analysis for dynamic traffic assignment. Sci. China Inf. Sci. 59, 1–17 (2016).

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  • dynamic traffic assignment
  • user equilibrium (UE)
  • system optimum (SO)
  • convergence
  • LaSalle’s invariance principle
  • 010203


  • 动态交通分配
  • 用户均衡
  • 系统优化
  • 收敛性
  • LaSalle 不变原理