Metastability in the formation of an experimental traffic jam
Metastability in the formation of an experimental traffic jam
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DOI：
10.1088/1367-2630/11/8/083025
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发表时间：
2009-08
影响因子：
3.3
通讯作者：
A. Nakayama;M. Fukui;M. Kikuchi;K. Hasebe;K. Nishinari;Y. Sugiyama;S. Tadaki;S. Yukawa
中科院分区：
文献类型：
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作者：
A. Nakayama;M. Fukui;M. Kikuchi;K. Hasebe;K. Nishinari;Y. Sugiyama;S. Tadaki;S. Yukawa
我们展示了在没有任何瓶颈的电路上进行的交通实验中堵塞形成过程的详细数据。实验是在平地上的环形道路上进行的。在初始阶段，车辆以相同的速度均匀地分布在电路上，但大约10分钟后，电路上自发地出现交通堵塞。在堵塞形成过程中，我们发现在堵塞群出现之前，会暂时实现一个大速度的均匀流。这种均匀流的不稳定性是理解堵塞形成的关键。
We show detailed data about the process of jam formation in a traffic experiment on a circuit without any bottlenecks. The experiment was carried out using a circular road on a flat ground. At the initial stage, vehicles are running homogeneously distributed on the circuit with the same velocity, but roughly 10 min later a traffic jam emerges spontaneously on the circuit. In the process of the jam formation, we found a homogeneous flow with large velocity is temporarily realized before a jam cluster appears. The instability of such a homogeneous flow is the key to understanding jam formation.