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Chin. Phys. B, 2010, Vol. 19(2): 020513    DOI: 10.1088/1674-1056/19/2/020513
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A new car-following model yielding log-normal type headways distributions

Li Li(李力)a),Wang Fa(王法)a), Jiang Rui(姜锐)b),Hu Jian-Ming(胡坚明)a), and Ji Yan(吉岩)a)
a Tsinghua National Laboratory for Information Science and Technology (TNList), Department of Automation, Tsinghua University, Beijing 100084, China; b School of Engineering Science, University of Science and Technology of China, Hefei 230026, China
Abstract  Modeling time headways between vehicles has attracted increasing interest in the traffic flow research field recently, because the corresponding statistics help to reveal the intrinsic interactions governing the vehicle dynamics. However, most previous micro-simulation models cannot yield the observed log-normal distributed headways. This paper designs a new car-following model inspired by the Galton board to reproduce the observed time-headway distributions as well as the complex traffic phenomena. The consistency between the empirical data and the simulation results indicates that this new car-following model provides a reasonable description of the car-following behaviours.
Keywords:  traffic flow      car-following      log-normal distribution  
Received:  01 October 2008      Revised:  08 April 2009      Accepted manuscript online: 
PACS:  89.40.Bb (Land transportation)  
  45.70.Vn (Granular models of complex systems; traffic flow)  
  02.50.Ng (Distribution theory and Monte Carlo studies)  
Fund: Project supported partly by the National Basic Research Program of China (Grant No.~2006CB705506), the National Hi-Tech Research and Development Program of China (Grant Nos.~2006AA11Z215 and 2007AA11Z222), and the National Natural Science Foundation of China (Grant Nos.~50708055, 60774034 and 10872194).

Cite this article: 

Li Li(李力),Wang Fa(王法), Jiang Rui(姜锐),Hu Jian-Ming(胡坚明), and Ji Yan(吉岩) A new car-following model yielding log-normal type headways distributions 2010 Chin. Phys. B 19 020513

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