The Journal of The Korea Institute of Intelligent Transport Systems (한국ITS학회 논문지)

The Korea Institute of Intelligent Transport Systems (한국ITS학회)
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Development of VSL Control Algorithms for Various Traffic Conditions in Tunnels

교통상황별 터널부 VSL 표출제어 알고리즘 개발

  • 이수양 (한국도로공사 재난안전처) ;
  • 이상수 (아주대학교 교통공학과) ;
  • 이철기 (아주대학교 교통공학과)
  • Received : 2019.05.15
  • Accepted : 2019.05.27
  • Published : 2019.06.30
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Abstract

This paper developed the VSL control algorithms for various traffic conditions in tunnels. Various algorithms determining control speed, buffer speed, and display time were suggested in order to apply three gantry locations. The algorithms were evaluated by constructing simulation environments using python and VISSIM Com-Interface. Results show that speed difference between congested flow and normal flow was 50 km/h without algorithm application, but the difference was reduced to 20 km/h with algorithm application. In addition, the length of congested region in the exit section of the tunnel was also reduced from 800m to 300m with algorithm application. It is expected that the traffic accidents in tunnels may be reduced since the average and standard deviation of the speed are greatly reduced after applying the algorithms suggested.

본 논문에서는 터널 진입부 도로에서 적용할 수 있는 교통상황별 VSL 제어 알고리즘을 개발하였다. 효과적인 VSL 제어를 위하여 3개의 갠트리에 적용될 제어속도와 완충속도를 계산하는 알고리즘과 표출시간을 계산하는 방법을 제시하였다. 제시된 알고리즘은 파이썬과 VISSIM COM-Interface를 이용하여 시뮬레이션 환경을 구축하여 평가하였다. 평가결과, 알고리즘 미적용시에는 정체 후미와 다음구간의 속도가 50km/h 이상으로 큰 차이가 났으나 적용시에는 속도 차이가 20km/h 이내로 크게 감소하였다. 그리고 알고리즘 미적용시 정체 후미의 길이가 터널 출구에서 800m지점까지 확산되었으나, 적용시에는 300m지점으로 축소되었다. 제시된 알고리즘을 적용시 전체적으로 각 구간별 평균속도와 속도편차가 모두 감소하여 터널부 교통사고 감소가 예상되고 나아가 정체시 차량운행의 안전을 향상하는데 큰 효과가 있을 것으로 판단된다.

Keywords

References

  1. Cho H. R. and Kim Y. C.(2010), "Modeling and analysis of traffic flow with variable speed limit on highway," Korean Society of Civil Engineers Magazine, vol. 58, no. 9, pp.45-52.
  2. Cho H. R., Wee. J. R. and Kim Y. C.(2012), "Modeling of phased variable speed limit on highway," Journal of Korean Society of Transportation, vol. 66, pp.191-196.
  3. Cho Y., Youn S. M. and Oh C.(2016), "Effectiveness analysis of Variable Speed Limit systems (VSL) in work zones based on meta-analysis," Journal of Korea Institute of Intelligent Transportation Systems, vol. 15, no. 4, pp.91-103. https://doi.org/10.12815/kits.2016.15.4.091
  4. Eo H. K., Park B. J., Kim T. H. and Heo J. N.(2013), "Operational strategy and effectiveness evaluation of variable speed limits system in tunnel: Focused on Hongjimun tunnel," Journal of Transport Research, vol. 20, no. 2, pp.137-151. https://doi.org/10.34143/jtr.2013.20.2.137
  5. Jo Y. T. and Jung I. B.(2010), "Real-time variable speed limits for urban freeway," Journal of KIISE : Computing Practices and Letters, vol. 16, no. 10, pp.962-974.
  6. Kuhn B., Balke K., Brydia R., Theiss L., Tsapakis L., Ruback L. and Le M.(2016), "Evaluation of Variable speed limit pilot projects for Texas department of transportation," Transportation Research Procedia, vol. 15, pp.676-693. https://doi.org/10.1016/j.trpro.2016.06.057
  7. Lee D. H., Lee K. Y., Lee S. B. and Oh Y. T.(2013), "Accident risk analysis based on compliance rate of variable speed limit," Journal of Transport Research, vol. 20, no. 3, pp.33-45. https://doi.org/10.34143/jtr.2013.20.3.33
  8. Lee S. B., Chang H. H., Lee Y. I. and Lee K. Y.(2015), "Development of speed estimation model under variable speed limit," Journal of Transport Research, vol. 22, no. 1, pp.1-14.
  9. Ministry of Land, Infrastructure and Transport(2013), Highway Capacity Manual, Korea
  10. Wang X., Seraj M., Bie Y., Qiu T. Z. and Niu L.(2016), "Implementation of variable speed limits: Preliminary test on whitemud drive, edmonton, Canada," Journal of Transportation Engineering, vol. 142, no. 12.
  11. Yang X., Lin Y., Lu Y. and Zou N.(2013), "Optimal variable speed limit control for real-time freeway congestions," Procedia - Social and Behavioral Sciences, vol. 96, pp.2362-2372. https://doi.org/10.1016/j.sbspro.2013.08.265