Dynamic Congested Traffic States of Density Difference Lattice Hydrodynamic Model with On-Ramp
Dynamic Congested Traffic States of Density Difference Lattice Hydrodynamic Model with On-Ramp
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DOI：
10.1155/2013/941238
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发表时间：
2013-10
影响因子：
1.4
通讯作者：
Junfang Tian;Zhen-zhou Yuan;B. Jia;Wang Tao
中科院分区：
文献类型：
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作者：
Junfang Tian;Zhen-zhou Yuan;B. Jia;Wang Tao
提出了带入口匝道的密度差格子水动力模型。设计了匝道流量进入主干道的随机性和确定性规则。在随机规则下，可以很好地再现各种经验时空模式，如固定局域簇（PLC）和同质同步流量（HST）。在确定性规则下，首次识别出入口匝道上游的平稳振荡拥堵交通（OCT）和高速公路上出现的平稳局部OCT等四种新的拥堵交通状态。与宏观速度梯度模型进行了比较，并阐明了我们的模型的一些优点。据我们所知，这是第一个研究表明，格子流体动力学模型可以再现各种拥堵模式诱导的入口匝道系统。
The density difference lattice hydrodynamic model with on-ramp is proposed. Stochastic and deterministic rules for the on-ramp flow entering into the main road are designed. Under the stochastic rule, various empirical spatiotemporal patterns can be well reproduced, such as the pinned localized cluster (PLC) and homogeneous synchronized traffic (HST). Under the deterministic rule, four new types of congested traffic states, such as the stationary oscillatory congested traffic (OCT) upstream of on-ramp and the stationary and localized OCT emerging in HST, are identified for the first time. Comparisons with the macroscopic speed gradient model are carried out, and some advantages of our model are clarified. To our knowledge, it is the first research showing that the lattice hydrodynamic model could reproduce various congested patterns induced by the on-ramp system.