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| 车头时距混合分布模型 | |
| 引用本文： | 陶鹏飞,王殿海,金盛.车头时距混合分布模型[J].西南交通大学学报,2011,46(4):633-637,644. |
| 作者姓名： | 陶鹏飞 王殿海 金盛 |
| 作者单位： | 1. 吉林大学交通学院,吉林长春,130022 2. 吉林大学交通学院,吉林长春130022;浙江大学建筑工程学院,浙江杭州310058 3. 浙江大学建筑工程学院,浙江杭州,310058 |
| 基金项目： | 国家自然科学基金资助项目(70971053) |
| 摘 要： | 为描述车头时距分布特性,基于二分车头时距的基本思想,将行驶车辆状态分为跟驰状态和自由流状态,在分析其运行特征的基础上,建立了能同时描述这两类状态对应的车头时距分布特性的混合分布模型.应用实测数据,通过EM(expectation maximization)算法确定模型的相关参数,并结合参数取值分析了路段上、下游和不同车道内车辆行驶统计特征的差异性,最后,进行了实例验证.研究结果表明:混合分布模型在实验路段各处均可通过卡方检验;与负指数分布、爱尔朗分布和M3分布相比,混合分布模型对车头时距分布情况的拟合精度平均提高10%以上,且对快速路入口匝道通行能力的计算结果与实测值较为接近. |
| 关 键 词： | 车头时距 分布模型 跟驰 自由流状态 |
Mixed Distribution Model of Vehicle Headway |
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| TAO Pengfei,WANG Dianhai,JIN Sheng.Mixed Distribution Model of Vehicle Headway[J].Journal of Southwest Jiaotong University,2011,46(4):633-637,644. | |
| Authors: | TAO Pengfei WANG Dianhai JIN Sheng |
| Institution: | TAO Pengfei1,WANG Dianhai1,2,JIN Sheng2(1.College of Transportation,Jilin University,Changchun 130022,China,2.College of Civil Engineering and Architecture,Zhejiang University,Hangzhou 310058,China) |
| Abstract: | For describing the distribution characteristics of headway,driving behaviors are classified into car-following state and free driving state by reference to the two-fluid theory.After analysis of their operation features,a mixed distribution model that can describe the headway distribution of both the two driving states was built.The model parameters were determined by expectation maximization(EM) algorithm using the measured data.Then,the differences between the statistical characteristics of the driving be... |
| Keywords: | headway distribution model car-following free flow state |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |