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

  • 제17권5호
  • /
  • Pages.65-76
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  • 2018
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  • 1738-0774(pISSN)
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  • 2384-1729(eISSN)
한국ITS학회 (The Korea Institute of Intelligent Transport Systems)
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안개농도와 표출크기에 따른 가변형 속도제한표지의 판독거리 분석

Analysis of Legibility Distance of Variable Speed Limit Sign from Different Display Sizes and Fog Density

  • 투고 : 2018.10.05
  • 심사 : 2018.10.17
  • 발행 : 2018.10.31
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초록

본 연구에서는 안개발생시 가변형 속도제한표지의 크기와 휘도에 따른 판독거리의 변화에 관한 현장실험을 실시하여 결과를 제시하였다. 이를 위하여 안개상황 모의 환경을 구축하였고, 속도제한표지의 밝기와 크기를 변동하면서 피실험자 실험을 수행하여 시정거리에 따른 판독 거리를 분석하였다. 분석 결과, 주어진 휘도에서 시정거리별 판독거리는 표지의 크기에 따라 증가하지만, 완벽한 선형적인 관계는 나타나지 않았다. 그리고 짙은 안개 상황일수록 크기가 큰 가변형 속도제한표지가 효과적인 것으로 파악되었다. 그리고 가변형 속도제한표지의 운영 휘도를 증가할수록 판독거리가 증가하는 경향을 나타내었다.

This study aims to evaluate the legibility distances of variable speed limit sign(VSL) for different sizes, luminances, and fog conditions through a field experiment. For this, extensive fog simulated environment has been constructed, and legibility distances are tested and recorded among test subjects for different luminances and sizes of VSL in control. Results showed that legibility distance increased as the size of VSL increased in the given illumination conditions, but it was not an exact linear trend. The size was also an important factor for determining legibility distance as the fog density increased, especially heavy fog conditions. In addition, the legibility distance also increased as the given illumination levels of VSL improved.

키워드

참고문헌

  1. Colomb M., Legeoueix G., Smith M., Aston M. and Williams T. (1999), Visibility of Variable Message Signs in Fog, Elsevier.
  2. KEC (2015), Production and Purchase Specifications of Variable Message Signs, Korea Expressway Corporation.
  3. Kim S., Lee S. and Kim Y. (2017), "An Analysis of Compliance of Variable Speed Limit under Foggy Conditions using Driving Simulator," The Journal of Korean Society of Transportation, vol. 16, no.2, pp.116-127.
  4. Kim Y., Lee S. and Kim S. (2016), "Fog Generated Field Test for Luminance Criteria of Variable Speed Limit Signs," Inernational Journal of Highway Engineering, vol. 18, no. 6, pp.77-85.
  5. MacCarley C., Ackles C. and Watts T. (2006), "Highway Traffic Response to Dynamic Fog Warning and Speed Advisory Messages," TRR. 1980, TRB, pp.95-104.
  6. Martin P., Perrin J. and Coleman B. (2003), Adverse Visibility Information System Evaluation (Advise) Interstate 215 Fog Warning System, University of Utah, UT DOT.
  7. MOLIT (2016), Installation and Maintenance Guideline on Highway Safety Facility: VMS, Ministry of Land, Infrastructure and Transport.
  8. Munehiro K., Tokunaga R., Asano M. and Hagiwara T. (2007), "Effect of Retroreflecting Performance for Traffic Signs by Driving Visibility Evaluation Under Foggy Conditions," TRB 86th Annual Meeting, No. 07-1387, p.16.
  9. NPA (2017), Standard Guideline of Variable Traffic Safety Sign, National Police Agency.
  10. Xiao D., Fang Y., Zhang Y. and Guo Z. (2017), "Analysis of driving behavior at the bridge-tunnel transition section in reduced visibility situations," Transportation Information and Safety (ICTIS) 4th International Conference, Alberta, Canada.