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DONG Chun-jiao, SHAO Chun-fu, MA Zhuang-lin, ZHUGE Cheng-xiang, LI Yang-yang. Temporal-spacial characteristic of urban expressway under jam flow condition[J]. Journal of Traffic and Transportation Engineering, 2012, 12(3): 73-79. doi: 10.19818/j.cnki.1671-1637.2012.03.011
Citation: DONG Chun-jiao, SHAO Chun-fu, MA Zhuang-lin, ZHUGE Cheng-xiang, LI Yang-yang. Temporal-spacial characteristic of urban expressway under jam flow condition[J]. Journal of Traffic and Transportation Engineering, 2012, 12(3): 73-79. doi: 10.19818/j.cnki.1671-1637.2012.03.011
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Temporal-spacial characteristic of urban expressway under jam flow condition

doi: 10.19818/j.cnki.1671-1637.2012.03.011
  • 1.

    Center for Transportation Research, The University of Tennessee, Knoxville 37996, Tennessee, USA

  • 2.

    MOE Key Laboratory for Urban Transportation Complex Systems Theory and Technology, Beijing Jiaotong University, Beijing 100044, China

  • 3.

    School of Automobile, Chang'an University, Xi'an 710064, Shaanxi, China

More Information
  • Author Bio:

    DONG Chun-jiao (1982-), female, assistant reseacher, PhD, +865-441-6015, dongchj2006@163.com

  • Received Date: 2011-12-29
  • Publish Date: 2012-06-25
    Abstract
  • Based on the auto-correlation function method of time sequence, the stationarities of time sequences for traffic flow, time occupancy and average speed were judged.Based on the G-P algorithm of chaos analysis, the non-stationary time sequence of traffic flow parameter was transformed to the stationary time sequence of traffic flow parameter.The concept of cross-correlation coefficient was introduced.Under jam flow condition, the cross-correlation coefficients of upstream section on observation section and observation section on downstream section were calculated, and K-S test were used to determine the characteristics of vehicle arrival at import and export ramps on urban expressway.Research result shows that traffic flow and time occupancy belong to non-stationary time sequence, but average speed belongs to stationary time sequence.When time lags are 2, 3 and 5 min respectively, the embedding dimension of reconstruction phase space is 4 under jam flow condition.The traffic flow parameters of observation section is not only influenced by the traffic flow parameters transmission of adjacent upstream section, but also influenced by the traffic flow parameters backtrack of adjacent downstream section.Under jam flow condition, the characteristics of vehicle arrival at import and export ramps on urban expressway are accordance with the negative binomial distribution.

     

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    • References(13)
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