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LI Ai-zeng, WANG Wei, LI Wen-quan. Traffic volume conditions of setting diagonal ramp[J]. Journal of Traffic and Transportation Engineering, 2008, 8(5): 81-85.
Citation: LI Ai-zeng, WANG Wei, LI Wen-quan. Traffic volume conditions of setting diagonal ramp[J]. Journal of Traffic and Transportation Engineering, 2008, 8(5): 81-85.
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Traffic volume conditions of setting diagonal ramp

  • School of Transportation, Southeast University, Nanjing 210096, Jiangsu, China

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  • Author Bio:

    LI Ai-zeng (1972-), male, doctoral student, +86-25-83791933, liaizeng@163.com

    WANG Wei (1959-), male, professor, PhD, +86-25-83794101, wangwei@seu.edu.cn

  • Received Date: 2008-03-18
  • Publish Date: 2008-10-25
    Abstract
  • In order to get the traffic volume conditions of setting diagonal ramp, time headway distributions on mainline outer lane in merging area were analyzed, gap acceptance theory and piecewise integral method were used, the adaptive traffic volume model for diagonal ramp vehicles driving into mainline was established.Considering the right-turn traffic volume driving into diagonal ramp and its time headway distributions, adaptive left-turn traffic volume models were developed based on gap acceptance theory, and the constraint conditions of left-turn and right-turn traffic volumes driving into diagonal ramp were obtained.Analysis result indicates that traffic volume conditions of setting diagonal ramp are related to mainline traffic volume, ramp traffic volume, length of acceleration lane, interval status of time headway distributions on mainline outer lane in merging area, critical gap and follow-up time of merging vehicles, and left-turn and right-turn traffic volumes driving into diagonal ramp.

     

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