The traffic flow controlled by the traffic lights in the speed gradient continuum model

The traffic flow controlled by the traffic lights in the speed gradient continuum model
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速度梯度连续体模型中交通灯控制的交通流量

DOI:
10.1016/j.physa.2005.04.001
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发表时间:
2005-09
期刊:
Physica A
影响因子:
--
通讯作者:
Wu Qing-Song
Wu Qing-Song
中科院分区:
其他
文献类型:
--
作者:
Jiang Rui;Wu Qing-Song

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本文利用SG模型研究了环形道路上交通灯控制的交通流问题。研究了单光情况、同步光策略、绿波光策略和随机开关光策略。给出了它们的时空分布。我们的模拟表明,流量与密度的关系曲线主要取决于光之间的距离和周期时间。容量随循环时间的增加而减小。对于灯光之间的较小距离,灯光不会成为瓶颈,流量与密度的关系图看起来就像一个基本的图表。对于非等距红绿灯的情况,其结果取决于红绿灯之间的距离分布。
In this paper, we have studied the traffic flow controlled by the traffic lights on a circuit road using the SG model. The single light situation, the synchronized light strategy, the green wave light strategy and the random switching light strategy are investigated. The spatio-temporal patterns are presented. Our simulations show that the plot of flow against density depends mainly on the distance between the lights and the cycle time. The capacity decreases with the increase of cycle time. For small distance between the lights, the lights do not behave as a bottleneck and the plot of flow against density looks just like a fundamental diagram. For the non-equidistant traffic lights situation, the results depend on the distribution of the distance between the lights.
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