交通运输系统工程与信息 ›› 2017, Vol. 17 ›› Issue (2): 41-46.

• 智能交通系统与信息技术 • 上一篇    下一篇

基于改进优化速度函数的跟驰模型研究

杨龙海1,赵顺*2,徐洪1   

  1. 1. 哈尔滨工业大学交通科学与工程学院,哈尔滨150090; 2. 深圳市城市交通规划设计研究中心有限公司,广东深圳518021
  • 收稿日期:2016-07-14 修回日期:2017-01-10 出版日期:2017-04-25 发布日期:2017-04-25
  • 作者简介:杨龙海(1970-),男,安徽巢湖人,副教授,博士.

Car-following Model Based on the Modified Optimal Velocity Function

YANG Long-hai1,ZHAO Shun2,XU Hong1   

  1. 1. School of Transportation Science and Engineering, Harbin Institute of Technology, Harbin 150090, China; 2. Shenzhen Urban Transport Planning Center, Shenzhen 518021, Guangdong, China
  • Received:2016-07-14 Revised:2017-01-10 Online:2017-04-25 Published:2017-04-25

摘要:

为了探究车辆跟驰中车头间距与速度的关系函数,采用高精度车载GPS 设备获取了大量基于时间序列的车辆跟驰数据,根据实测车头间距—平均速度关系构建了改进的优化速度函数.对原优化速度函数和改进的优化速度函数进行了参数标定,并对两个函数进行了微观向宏观交通参数的推导,结果表明,改进的优化速度函数能更好地描述车辆跟驰中微观和宏观交通参数之间的关系.最后对基于两种函数的全速度差跟驰模型进行了数值模拟,结果表明,基于改进的优化速度函数的跟驰模型具有更好的稳定性.

关键词: 城市交通, 跟驰模型, 非线性回归, 优化速度函数, 交通流理论

Abstract:

To research the numerical relationship between headway and speed, field data of car-following is gathered by vehicles equipped with high precision GPS, and a Modified Optimal Velocity model (M-OVM for short) is built based on the field data. The original OVM and the M-OVM are calibrated and extended to the macroscopic parameters, the result shows that the M- OVM can describe the relationship of traffic parameters with a higher accuracy. Furthermore, simulations are conducted to analyze the characteristics of the car-following model with the M-OVM, the result shows that the M-OVM can improve the stability of the car-following model.

Key words: urban traffic, car- following model, nonlinear calibration, optimal velocity model, traffic flow theory

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