• ISSN 0258-2724
  • CN 51-1277/U
  • EI Compendex
  • Scopus
  • Indexed by Core Journals of China, Chinese S&T Journal Citation Reports
  • Chinese S&T Journal Citation Reports
  • Chinese Science Citation Database
Volume 20 Issue 3
Jun.  2007
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Article Contents
LI Song, HE Guoguang, ZHANG Jie. Relationship between Distance Headway and Chaos in Traffic Flow on Expressway[J]. Journal of Southwest Jiaotong University, 2007, 20(3): 305-309.
Citation: LI Song, HE Guoguang, ZHANG Jie. Relationship between Distance Headway and Chaos in Traffic Flow on Expressway[J]. Journal of Southwest Jiaotong University, 2007, 20(3): 305-309.

Relationship between Distance Headway and Chaos in Traffic Flow on Expressway

  • Received Date: 05 Dec 2006
  • Publish Date: 25 Jun 2007
  • The relationship between distance headway and chaos in traffic flow on expressway was investigated in order to analyze the formation mechanism of chaos in traffic flow.An improved algorithm for largest Lyapunov exponent was put forward for rapid identification of chaos in traffic flow.The chaos in traffic flow on an expressway was investigated with the improved algorithm and the power spectrum method.The power spectrums of the time series of the traffic flow were illustrated.Through the analysis of the power spectrums of the distance headway,it is clear that there are the variations of noise and wide apices.The largest Lyapunov exponents of the time series of the traffic flow were computed and used to identify the chaos in the traffic flow on the expressway.The results prove that chaos exists in traffic flow on an expressway indeed.The research shows that the change in distance headway is the main factor causing chaos in traffic flow.

     

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