Phase Diagram in Multi-Phase Traffic Model
Phase Diagram in Multi-Phase Traffic Model
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DOI：
10.1016/j.physa.2005.04.004
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发表时间：
2005-09
影响因子：
3.3
通讯作者：
Ryoichi Nagai;T. Nagatani;A. Yamada
中科院分区：
文献类型：
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作者：
Ryoichi Nagai;T. Nagatani;A. Yamada
提出了一种考虑车辆复杂运动的多相位交通模型。多相流模型是最优流速模型的一种扩展。最优速度（OV）函数被修改为具有多个转折点。原来的OV模型只有一个转弯点，表现为两相交通，而有n（n <$2）个转弯点的模型表现为n+1相交通。通过改变密度发生多个相变。相变高度依赖于灵敏度（延迟时间的倒数）。通过线性稳定性分析，得到了与干扰过渡点一致的中性稳定线。给出了多个干扰跃迁的相位图。
A multi-phase traffic model is presented to take into account the complex motion of vehicles. The multi-phase model is one of the extended optimal velocity model. The optimal velocity (OV) function is modified to have multi turning points. The original OV model with a single turning point exhibits two-phase traffic, while the model with n(n⩾2) turning points displays n+1 phase traffic. The multiple phase transitions occur by varying the density. The phase transitions depend highly on the sensitivity (the inverse of delay time). The neutral stability line is obtained by using the linear stability analysis and is consistent with the jamming transition points. The phase diagrams are presented for the multiple jamming transitions.