Multiple jamming transitions in traffic flow
Multiple jamming transitions in traffic flow
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DOI：
10.1016/s0378-4371(00)00578-1
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发表时间：
2001-02
影响因子：
3.3
通讯作者：
T. Nagatani
中科院分区：
文献类型：
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作者：
T. Nagatani
在扩展的跟驰模型中，研究了逐步加速对干扰过渡的影响。最佳速度函数进行修改，以考虑逐步加速的车辆。结果表明，在不同的汽车密度发生多个相变。多个转变随延迟时间而改变。给出了不同延迟时间下的流量-密度曲线和速度-车头时距曲线。多干扰过渡线与中性稳定性曲线一致。干扰过渡与最优速度函数的转折点密切相关。
The effect of accelerating stepwise on the jamming transition is investigated in the extended car-following model. The optimal velocity function is modified to take into account accelerating stepwise vehicles. It is shown that the multiple phase transitions occur on varying the car density. The multiple transitions change with the delay time. The flow-density curves and the velocity-headway curves are presented for various delay times. It is also shown that the multiple jamming transition lines are consistent with the neutral stability curves. The jamming transitions are closely related with the turning points of the optimal velocity function.