| 交通扰动与交通流稳定性机理解析 |
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| 引用本文： | 郝媛,徐天东,孙立军.交通扰动与交通流稳定性机理解析[J].武汉理工大学学报(交通科学与工程版),2010,34(2):217-220. |
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| 作者姓名： | 郝媛 徐天东 孙立军 |
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| 作者单位： | 1. 中国城市规划设计研究院,北京,100037
2. 同济大学交通运输工程学院,上海,200092 |
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| 基金项目： | 国家科技支撑计划项目资助(批准号:2006BAG01A02) |
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| 摘 要： | 道路条件及密集交通流随机波动是交通扰动的诱因,并可能引发交通流不稳定.提出3个影响交通流稳定性的重要因素——背景交通状况、驾驶员特性、车队均一性.讨论了基于跟车模型导出的交通流稳定性的充分和必要条件,辨析其中各参数的准确含义和各条件之间的相互关系.借助交通流基本图和车辆轨迹线图,分析在各影响因素作用下交通扰动在实际交通流中的演变.
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| 关 键 词： | 交通扰动 交通流稳定性 跟车 机理 |
Understanding the Mechanism of Traffic Disturbance and Traffic Flow Instability |
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| Hao Yuan,Xu Tiandong,Sun Lijun.Understanding the Mechanism of Traffic Disturbance and Traffic Flow Instability[J].journal of wuhan university of technology(transportation science&engineering),2010,34(2):217-220. |
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| Authors: | Hao Yuan Xu Tiandong Sun Lijun |
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| Institution: | China Academy of Urban Planning & Design/a>;Beijing 100037/a>;China;School of Transportation Engineering/a>;Tongji University/a>;Shanghai 200092/a>;China |
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| Abstract: | Road condition and stochastic fluctuation of traffic flow in dense traffic are causes of traffic disturbance/perturbation,which could induce traffic flow instability.The paper analyzes three important impact factors on traffic flow instability,background traffic condition,driver characteristics,and traffic homogeneity.The necessary condition and sufficient condition of traffic flow stability based on car-following models are discussed,and the exact meaning of relevant parameters and the interrelation of the... |
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| Keywords: | traffic disturbance/perturbation traffic instability car following mechanism |
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