| 信号灯随机更新的城市交通网络模型 |
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| 引用本文： | 盘薇,贾丽斯,薛郁.信号灯随机更新的城市交通网络模型[J].广西科学,2016,23(3):189-193. |
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| 作者姓名： | 盘薇 贾丽斯 薛郁 |
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| 作者单位： | 1. 香港城市大学建筑学及土木工程学系，香港; 广西大学物理科学与工程技术学院，广西南宁530004;2. 广西大学行健文理学院,广西南宁,530005;3. 广西大学物理科学与工程技术学院,广西南宁,530004 |
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| 基金项目： | 国家自然科学基金项目(11262003)，广西自然科学基金项目(20140593)，广西研究生创新项目(YCSZ2012013)资助。 |
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| 摘 要： | 【目的】改进二维元胞自动机模型(BML模型),使其更好模拟实际城市交通网络。【方法】利用元胞自动机方法,建立信号灯随机更新的城市交通网络模型。【结果】数值模拟发现,信号灯的同步对城市交通网络的影响较大,且随机更新的引入使得网络系统的临界密度大幅度降低。【结论】同时调整信号灯的分布和信号变换周期能有效控制交通网络,解决由于信号灯随机更新所造成的系统临界密度变小的问题。
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| 关 键 词： | 元胞自动机 城市交通网络 随机更新 |
| 收稿时间： | 2016/3/15 0:00:00 |
| 修稿时间： | 2016/3/26 0:00:00 |
Signal Controlled Urban Traffic Network Model with Random Update Rule |
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| PAN Wei,JIA Lisi and XUE Yu.Signal Controlled Urban Traffic Network Model with Random Update Rule[J].Guangxi Sciences,2016,23(3):189-193. |
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| Authors: | PAN Wei JIA Lisi and XUE Yu |
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| Institution: | Department of Architectural and Civil Engineering, City University of Hong Kong, Hong Kong, China;College of Physical Science and Engineering, Guangxi University, Nanning, Guangxi, 530004, China,Xingjian College of Science and Liberal Arts, Guangxi University, Nanning, Guangxi, 530005, China and College of Physical Science and Engineering, Guangxi University, Nanning, Guangxi, 530004, China |
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| Abstract: | Objective]An improved two-dimensional cellular automaton model (BML model) was proposed to better simulate real urban traffic network.Methods]Aiming at the urban traf-fic congestion problem and using the cellular automata method,a traffic signal model with ran-dom update rule was established to study the urban traffic network.Results]Simulation results showed that the synchronization of the traffic signal has great influence on the traffic system, and the introduction of random update rule significantly reduces the critical density of phase transition.Conclusion]When the roads are crowed by cars,simultaneous adj usting of signal ar-rangements and periods provides a possible way for relaxing the traffic congestion. |
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| Keywords: | cellular automata urban traffic network random update |
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