Macroscopic modeling of lane‐changing for two‐lane traffic flow
Macroscopic modeling of lane‐changing for two‐lane traffic flow
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DOI：
10.1002/atr.5670430302
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发表时间：
2009-07
影响因子：
2.3
通讯作者：
Tie-Qiao Tang;S. Wong;Haijun Huang;Peng Zhang
中科院分区：
文献类型：
--
作者：
Tie-Qiao Tang;S. Wong;Haijun Huang;Peng Zhang
提出了一个与双车道公路上车辆跟驰行为相一致的换道宏观模型。利用线性稳定性理论，分析了换道对一、二阶波的稳定区域和传播速度的影响。在分析小扰动时，该模型有效地再现了某些非平衡交通流现象--小扰动不稳定、走走停停的波动和受换道影响的局部集群。该模型还给出了实际流量、换道速度以及潜在流量(没有换道时发生的流量)与实际流量之间的差值的流量-密度关系。实际车流量与车流密度、换道率与车流密度之间的关系均呈反波长关系，这与观测到的交通现象基本一致。
The authors propose a macroscopic model of lane-changing that is consistent with car-following behavior on a 2-lane highway. Using linear stability theory, it is found that lane-changing affects the stable region and propagation speeds of the first-order and second-order waves. In analyzing a small disturbance, the model effectively reproduces certain non-equilibrium traffic-flow phenomena—small disturbance instability, stop-and-go waves, and local clusters that are affected by lane-changing. The model also gives the flow-density relationships in terms of the actual flow rate, the lane-changing rate, and the difference between the potential flow rate (the flow rate that would have occurred without lane-changing) and the actual flow rate. The relationships between the actual flow rate and traffic density and between the lane-changing rate and traffic density follow a reverse-lambda shape, which is largely consistent with observed traffic phenomena.