论文标题
动态流量中的胸罩悖论
The Braess Paradox in Dynamic Traffic
论文作者
论文摘要
胸罩的悖论（BP）是，在现有的道路网络中增加一条或多条道路将对恒定地增加交通拥堵并减慢整体交通流量的速度。以前，使用静态交通分配模型对BP的存在进行建模，该模型求解了通过网络流量保护的用户平衡，以找到平衡状态并立即分发所有车辆。这种方法忽略了现实世界流量的动态性质，包括车辆行为以及车辆与基础设施之间的相互作用。因此，本文提出了一个动态的流量网络模型，并通过经验验证了在动态流量下的BP的存在。特别是，我们使用微仿真环境来研究增加的路径对网格网络的影响。我们探索网络流，车辆旅行时间和网络容量的响应以及BP的发生何时响应。
The Braess's Paradox (BP) is the observation that adding one or more roads to the existing road network will counter-intuitively increase traffic congestion and slow down the overall traffic flow. Previously, the existence of the BP is modeled using the static traffic assignment model, which solves for the user equilibrium subject to network flow conservation to find the equilibrium state and distributes all vehicles instantaneously. Such approach neglects the dynamic nature of real-world traffic, including vehicle behaviors and the interaction between vehicles and the infrastructure. As such, this article proposes a dynamic traffic network model and empirically validates the existence of the BP under dynamic traffic. In particular, we use microsimulation environment to study the impacts of an added path on a grid network. We explore how the network flow, vehicle travel time, and network capacity respond, as well as when the BP will occur.
