吉林大学学报(工学版) ›› 2012, Vol. 42 ›› Issue (02): 316-320.

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Speed-limit scheme of traffic accident scene road section on freeway

ZHANG Wen-hui1, XU Hong-guo2   

  1. 1. School of Traffic, North East Forestry University, Harbin 150040, China;
    2. School of Traffic, Jilin University, Changchun 130022, China
  • Received:2011-03-31 Online:2012-03-01 Published:2012-03-01

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Abstract: In order to improve the safety in traffic accident scene road section in freeway and prevent from the secondary accident, this road section was divided into warning region, confluence region,buffering region,accident region,diffluence region,and termination region. Taking the driver visual field, visual acuity, and the information needs processing into account comprehensively, the speed-limit models were built for the warning region and confluence region. The speed-limit scheme of the typical traffic accident scene was obtained by quantitative processing of the related informations. The traffic capacities, the max queue lengths, the average velocities, and the standard deviations of the speed samples of different speed-limit schemes were compared in the simulation environment. The results showed that the traffic capacity has no significant difference, the average velocity is lower in the speed-limit scheme, but the max queue length and the standard deviation of speed sample decrease, improving the safety of the traffic accident scene road section.

Key words: engineering of communications and transportation, freeway, accident scene, speed-limit model

CLC Number: 

  • U491.31
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