[1]王欣,李文权,王炜.基于驾驶行为共性的回波速度解释及仿真[J].东南大学学报(自然科学版),2007,37(4):691-694.[doi:10.3969/j.issn.1001-0505.2007.04.029]
 Wang Xin,Li Wenquan,Wang Wei.Interpreting and emulating echo wave speed based on common characteristics of driving behavior[J].Journal of Southeast University (Natural Science Edition),2007,37(4):691-694.[doi:10.3969/j.issn.1001-0505.2007.04.029]
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基于驾驶行为共性的回波速度解释及仿真()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
37
期数:
2007年第4期
页码:
691-694
栏目:
交通运输工程
出版日期:
2007-07-20

文章信息/Info

Title:
Interpreting and emulating echo wave speed based on common characteristics of driving behavior
作者:
王欣 李文权 王炜
东南大学交通学院, 南京 210096
Author(s):
Wang Xin Li Wenquan Wang Wei
School of Transportation, Southeast University, Nanjing 210096, China
关键词:
驾驶行为 回波 回波速度 车辆跟弛
Keywords:
driving behavior echo wave echo wave speed car-following
分类号:
U491.112
DOI:
10.3969/j.issn.1001-0505.2007.04.029
摘要:
为了解释车流回波速度现象,提取出驾驶行为共性: 驾驶员利用与渴望车速对应的心理车头距判断前方的交通流状况; 加速或减速行为是驾驶员根据前方车传递的交通信息和自己对此信息的时间和空间理解来进行的,并且以回波速度向后传递.利用数学方法描述这些驾驶共性,建立了以车头距和驾驶员反应时间等为参数的回波速度模型,解释了车流回波速度现象.使用MATLAB软件对回波速度模型编程,数值仿真加速与减速时回波速度曲线.仿真结果表明:驾驶员反应时间明显影响回波速度,在交通流由自由流转变为拥挤流时的临界车流密度(ρc=25.1 vehicle/km)处回波速度最大(cmax=19.8 km/h),其大小与相关文献提供的数据吻合.
Abstract:
In order to interpret phenomenon of echo wave speed in traffic stream, the common characteristics of driving behavior is put forward first, namely, drivers judge the front state of traffic stream by the mental headway corresponding to the desired velocity, accelerating or decelerating behavior is selected by front vehicle’s transfer of traffic information and by driver’s comprehension of the information from the view of time and space, which is transferred backwards at the echo wave speed. By mathematical descriptions of the common characteristics of driving behaviors a microscopic formula on echo wave speed is provided, which takes headway and drivers’ reaction time as parameters. The phenomenon of echo wave speed in traffic stream is interpreted. The echo wave speed for accelerating and decelerating were emulated with the MATLAB software. Numerical emulating result indicates that the reaction time of driver affects the echo wave speed obviously. The maximum speed of the echo wave(cmaxmax=19.8 km/h), which agrees with the value listed in corresponding literatures, occurs at the critical density(ρc=25.1 vehicle/km), where traffic stream transits from free stream to congested stream.

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备注/Memo

备注/Memo:
基金项目: 国家自然科学基金资助项目(50478071).
作者简介: 王欣(1968—),男,博士生; 王炜(联系人),男,博士,教授,博士生导师, wangwei@seu.edu.cn.
更新日期/Last Update: 2007-07-20