[1]王昊,王炜,陆建,等.基于跟驰理论的车速离散度定义及特性[J].东南大学学报(自然科学版),2009,39(1):161-165.[doi:10.3969/j.issn.1001-0505.2009.01.031]
 Wang Hao,Wang Wei,Lu Jian,et al.Car-following theory based speed dispersion definition and related properties[J].Journal of Southeast University (Natural Science Edition),2009,39(1):161-165.[doi:10.3969/j.issn.1001-0505.2009.01.031]
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基于跟驰理论的车速离散度定义及特性()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
39
期数:
2009年第1期
页码:
161-165
栏目:
交通运输工程
出版日期:
2009-01-20

文章信息/Info

Title:
Car-following theory based speed dispersion definition and related properties
作者:
王昊 王炜 陆建 李杰
东南大学交通规划与管理江苏省重点实验室, 南京 210096
Author(s):
Wang Hao Wang Wei Lu Jian Li Jie
Jiangsu Provincial Key Laboratory of Transportation Planning and Management,Southeast University, Nanjing 210096, China
关键词:
交通工程 车速离散度 平均速差 车速标准差
Keywords:
traffic engineering speed dispersion average speed difference standard deviation of speeds
分类号:
U491.112
DOI:
10.3969/j.issn.1001-0505.2009.01.031
摘要:
基于车辆跟驰理论提出了能够反映交通流动态特性的车速离散度平均速差(ASD)的定义.应用统计学方法和交通流理论分析了新定义平均速差ASD与传统定义车速标准差SD之间的关系,发现自由流状态下车速离散度ASD的均值约为SD均值的1.13倍,拥挤状态下车速离散度ASD值小于SD值,并用实测交通流数据验证了理论分析结果.车速离散度与交通流密度相关关系的回归分析结果表明,与传统车速离散度定义SD相比,新定义ASD与交通流密度之间的负相关性更为显著.
Abstract:
A new definition of speed dispersion ASD(average speed difference)is proposed based on car-following theory. The relations between the new definition ASD and the traditional definition SD(standard deviation)are studied by the methods of statistics and traffic flow theory. It is found that the average ASD is about 1.13 times as much as the average SD in free-flow state, and the ASD is smaller than the SD in congested state, which are verified by empirical data of Dutch freeway traffic. The results of regression analysis between speed dispersion and traffic density indicate that the correlation coefficient between ASD and traffic density is much higher than that between SD and traffic density.

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备注/Memo

备注/Memo:
作者简介: 王昊(1980—),男,博士,讲师,haowang@seu.edu.cn.
基金项目: 国家“十一五”科技支撑计划资助项目(2007BAK35B02)、国家重点基础研究发展计划(973计划)资助项目(2006CB705501).
引文格式: 王昊,王炜,陆建,等.基于跟驰理论的车速离散度定义及特性[J].东南大学学报:自然科学版,2009,39(1):161-165.
更新日期/Last Update: 2009-01-20