Journal of Korean Society of Transportation (대한교통학회지)

Korean Society of Transportation (대한교통학회)
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Prioritizing Freeway Segments for Variable Speed Limit (VSL) Operations based on Traffic Safety

교통안전을 고려한 고속도로 가변제한속도 운영구간 우선순위 결정 연구

  • Choi, Sae-Ro-Na (Transportation and Logistics Engineering, Hanyang University) ;
  • Lee, Kee-Yong (Expressway and Transportation Research Institute) ;
  • Oh, Cheol (Transportation and Logistics Engineering, Hanyang University)
  • 최새로나 (한양대학교 교통.물류공학과) ;
  • 이기영 (한국도로공사 도로교통연구원) ;
  • 오철 (한양대학교 교통.물류공학과)
  • Received : 2012.01.13
  • Accepted : 2012.04.13
  • Published : 2012.06.30
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Abstract

Variable speed limit(VSL) is a useful speed management tool for alleviating traffic congestion and enhancing traffic safety. The purpose of this study is to identify promising freeway segments for safety enhancement through VSL operations. An ordered probit model was adopted to capture factors affecting freeway crash severity that can be used to support decision making for selecting the promising segments. Pseudo elasticity and marginal effects, which are outcomes of the ordered probit analysis, were used to determine priority of promising segments for traffic safety. The results of this study would be useful in installing VSL systems and developing traffic control and operations strategies in practice.

최근 고속도로에서 운전자가 교통운영 및 안전상 적정한 속도로 운행할 수 있도록 기상, 교통사고, 혼잡 등에 효과적으로 대응할 수 있는 교통류 관리전략에 대한 필요성이 증가하고 있다. 새로운 교통시스템을 적용하기에 앞서 해당 시스템의 효과를 극대화할 수 있는 운영구간을 결정하는 기준에 대한 연구가 선행되어야 하며, 교통사고자료를 활용한 통합적인 분석을 통하여 운영구간 우선순위 결정 기준을 마련할 수 있다. 본 연구에서는 향후 국내 가변제한속도 도입 시 교통안전을 고려하여 우선적으로 설치해야할 운영구간을 선정하기 위한 방법론을 제시하였다. 순서형 프로빗 모형을 이용한 분석결과, 교통안전을 고려한 가변제한속도 운영구간 우선순위는 교량 및 터널구간, 내리막구간, 승합차 또는 화물차의 비율이 높은 구간, 야간시, 이상기후시 차량의 평균속도가 높은 구간, 차량간 속도분산이 높게 나타나는 구간 순으로 나타났다. 본 연구의 결과는 기상대응을 목적으로한 국내 가변제한속도 시스템 도입시 운영구간 우선순위 도출에 효과적으로 활용할 수 있다.

Keywords

References

  1. Kang, K. W. and Lee, K. R.(2010), "Development of the Bicycle Level of Service Model from the User's Perspective", Journal of Korean Society of Transportation, Vol.28, No.3, Korean Society of Transportation, pp.75-84.
  2. Kang, S. L. and Lee, S. K.(2004), "Prioritization in the Site Selection for Installation of Medians", 2004 Korean Society of Civil Engineers(KSCE) Annual Convention, pp.2893-2898.
  3. Lee, C. K., Oh, J. S. and Jo, Y. H.(2002), "Application of Fuzzy Integrals to the Decision of Construction Priority of Intelligent Traffic Systems in Rural Road", Journal of Korean Society Civil Engineering, Vol.22, No.3D, pp.471-481.
  4. Jung, H. Y., Lee, H. W. and Kim, J. K.(2005), "A Study on the Ranking Decision for Construction of Up and Down Convenient Facility in Subway Stations", Journal of Korean Society Civil Engineering, Vol.25, No.3D, pp.423-428.
  5. Jo, Y. T. and Jung, B. I.(2010), "Real-Time Variable Speed Limits for Urban Freeway", Journal of Computing Science and Engineering : Computing Pracices and Letters, Vol.16, No.10, pp.962-974.
  6. Choi, K. J., Sim, S. W., Lee, Y. Y. and Kim, I. S.(2009), "Selection of Expressway Ramp Metering Sites and Priority Making", Journal of Korean Society Civil Engineering, Vol.29, No.5D, pp.579-585.
  7. Ha, O. K., Oh, J. T., Won, J. M. and Sung, N. M.(2005), "The Study on the Accident Injury Severity Using Ordered Probit Model", Journal of Korean Society of Transportation, Vol.23, No.4, Korean Society of Transportation, pp.47-55.
  8. Expressway and Transportation Research Institute(2011), "A Study on strategy for variable speed limit(VSL) system in respond to unstable weather(I)", Research Report.
  9. Hong, J. Y., Kim, K. T. and Lee, S. B. (2011), "Developing the Accident Injury Severity on a Field of Construction Work Using Ordered Probit Model", Journal of the Korean Society of Safety, Vol.26, No.2, pp.89-98.
  10. Abdel-Aty, M., J. Dilmore and A. Dhindsa(2006), "Evaluation of variable speed limits for real-time freeway safety improvement", Accident Analysis & Prevention, Vol.38, Issue 2, pp.335-345. https://doi.org/10.1016/j.aap.2005.10.010
  11. Allaby, P., B. Hellinga and M. Bullock (2007), "Variable Speed Limits: Safety and Operational Impacts of a Candidate", IEEE Transactions on Intelligent Transportation Systems, Vol.8, No.4, pp.671-680. https://doi.org/10.1109/TITS.2007.908562
  12. Christoforou Z., S. Cohen and M. G. Karlaftis(2010), "Vehicle occupant injury severity on highways: An empirical investigation Original Research Article", Accident Analysis & Prevention, Vol.42, Issue 6, pp.1606-1620. https://doi.org/10.1016/j.aap.2010.03.019
  13. Geistefeldt, J.(2011), "Capacity effects of variable speed limits on German freeways", Procedia - Social and Behavioral Sciences, Vol.16, pp.48-56. https://doi.org/10.1016/j.sbspro.2011.04.428
  14. Hegyi, A., B. D. Schutter and H. Hellendoorn(2005), "Model predictive control for optimal coordination of ramp metering and variable speed limits", Transportation Research Part C: Emerging Technologies, Vol.13, Issue 3, pp.185-209. https://doi.org/10.1016/j.trc.2004.08.001
  15. Heydecker, B. G., J. D. Addison(2011), "Analysis and modelling of traffic flow under variable speed limits", Transportation Research Part C: Emerging Technologies, Vol.19, Issue 2, pp.206-217. https://doi.org/10.1016/j.trc.2010.05.008
  16. Jou R. C., K. H. Chen(2010), "A Study of Highway Drivers' Demand of Real-time Traffic Information for Main Travelling Highways and Alternative Routes", 12th World Conference on Transport Research, 2010-Lisbon, Portugal.
  17. Kockelman, K. M. and Y. J. Kweon(2001), "Driver Injury Severity : An Applocation of Ordered Probit Models", Accident Analysis & Prevention, Vol.28, pp.313-321.
  18. Lee, C., B. Hellinga and F. Saccomanno (2004), "Assessing Safety Benefits of Variable Speed Limits", Journal of the Transportation Research Board, No.1879, pp.183-190.
  19. Lee, C., B. Hellinga and F. Saccomanno (2006), "Evaluation of variable speed limits to improve traffic safety", Transportation Research Part C: Emerging Technologies, Vol.14, Issue 3, June, pp.213-228. https://doi.org/10.1016/j.trc.2006.06.002
  20. Lemp J. D., K. M. Kockelman and A. Unnikrishnan(2011), "Analysis of large truck crash severity using heteroskedastic ordered probit models Original Research Article", Accident Analysis & Prevention, Vol.43, Issue 1, pp.370-380. https://doi.org/10.1016/j.aap.2010.09.006
  21. Nissan, A. and H. N. Koutsopoulosb(2011), "Evaluation of the Impact of Advisory Variable Speed Limits on Motorway Capacity and Level of Service", Procedia - Social and Behavioral Sciences, Vol.16, pp.100-109. https://doi.org/10.1016/j.sbspro.2011.04.433
  22. Papageorgiou, M., E. Kosmatopoulos and I. Papamichail(2000), "Effects of Variable Limits on Motorway Traffic Flow", Transportation Research Board, 87th Annual Meeting, Washington D.C.
  23. Radwan, E., Z. Zaidi and R. Harb(2011), "Operational Evaluation of Dynamic Lane Merging In Work Zones with Variable Speed Limits", Accident Procedia - Social and Behavioral Sciences, Vol.16, pp.460-469. https://doi.org/10.1016/j.sbspro.2011.04.467
  24. Tarko A. and Azam M. S.(2011), "Pedestrian injury analysis with consideration of the selectivity bias in linked police-hospital data", Accident Analysis & Prevention, Vol.43, Issue 5, pp.1689-1695. https://doi.org/10.1016/j.aap.2011.03.027

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