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林展熙, 郭明旻, 郑贤清, 吴胜春, 吴正. 基于实测数据的交通流模型比较研究[J]. 力学学报, 2010, 42(5): 848-855. DOI: 10.6052/0459-1879-2010-5-lxxb2009-128
引用本文: 林展熙, 郭明旻, 郑贤清, 吴胜春, 吴正. 基于实测数据的交通流模型比较研究[J]. 力学学报, 2010, 42(5): 848-855. DOI: 10.6052/0459-1879-2010-5-lxxb2009-128
A Comparative Study on Traffic Flow Models Based on Real Measured Data[J]. Chinese Journal of Theoretical and Applied Mechanics, 2010, 42(5): 848-855. DOI: 10.6052/0459-1879-2010-5-lxxb2009-128
Citation: A Comparative Study on Traffic Flow Models Based on Real Measured Data[J]. Chinese Journal of Theoretical and Applied Mechanics, 2010, 42(5): 848-855. DOI: 10.6052/0459-1879-2010-5-lxxb2009-128

基于实测数据的交通流模型比较研究

A Comparative Study on Traffic Flow Models Based on Real Measured Data

  • 摘要: 依据上海延安高架路段的交通流录像资料提取的26000余组实测数据,作出流量-密度图,发现即使在低密度时流密关系亦具有非线性二维区域特性。通过与Kerner提出的非线性二维流密关系模型进行比较,指出一些符合中国交通状况的现象可在图中得以体现。利用观测得到的大量数据,在按密度划分的不同区间内对已有的多个平衡函数进行最优筛选,得到分段平衡函数的表达式,使交通流模型更加贴近真实交通状况。最后提出了基于实测数据计算激进型驾驶者比例的方法,该方法的关键在于利用各种经过特征值变换后的平衡函数形式模拟已有数据的区域边界。关键词:交通流模型;实测数据;流量-密度图;分段平衡函数;激进型驾驶者

     

    Abstract: Through both the analysis of over 26,000 real measured data collected on Shanghai's Yan'an Viaduct and the comparison with Kerner's classic model, it is found that the flow-density figure shows that non-linear regional characters even exist in the low density section. In addition, a method to quantify the proportion of aggressive drivers is proposed by means of fitting different equilibrium functions to real measured data and then forming a piecewise function composed of the best-fit function in each density section. This piecewise equilibrium function is much closer to China's present traffic conditions. Keywords: Traffic Flow Models; Measured Data; Flow-density Figure; Piecewise Equilibrium Function ;Aggressive Drivers;

     

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