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A Study on Traffic-Flow Characteristic Changes on Expressway by Visibility

시정거리에 따른 고속도로 교통류 특성 변화 연구

  • 손영태 (명지대학교 교통공학과) ;
  • 전진숙 (명지대학교 교통공학과)
  • Received : 2013.11.07
  • Accepted : 2013.11.22
  • Published : 2013.12.31

Abstract

Weather factor to affect driver's driving environment are due to changes in weather conditions is caused rainfall, snowfall, fog etc and the reducing of road capacity and because deteriorating weather could be affect the headway and vehicle speed and the decrease in lane caused by an accident occurs that was analyzed that bad weather occur congestion greater than on the clear day. Bad weather to reduce of the driver's visibility was analysed the sensitive to changes in travel speed and traffic accident to appears high characteristics according to weather conditions on the expressway(higher speed) than general road. As a result, visibility have been determined to be important factor in changes of the highway traffic flow characteristics. Therefore, in this study, we selected traffic volume and travle speed that have a major impact on high-speed expressway basic segments as importance effect factor and we selected to subject of analysis among the Metropolitan Expressway that it could be obtained certain level of traffic volume data and we studied the changing of expressway traffic flow due to change visibility after the collecting of meteorological and traffic data. In order to perform this study, data collection and analysis methods were established through the existing literature and we had selected level of visibility of the expressway and we had performed the statistical verification. Finally, we had calculated the rate of change of expressway traffic flow characteristics due to visibility and we had come up with a way to apply at capacity and service level analysis.

강설, 안개발생 등 기상상태의 변화는 운전자의 주행환경에 영향을 미치는 기상요인으로 기상악화 시 차량의 차두간격과 속도에 영향을 미치게 되어 도로용량을 감소시키고, 교통사고 발생으로 인한 차로감소 등의 상황을 유발하여 맑은 날보다 더 큰 혼잡을 발생시키는 것으로 분석되었다. 운전자의 시정을 감소시키는 기상악화는 통행속도가 높은 고속도로가 일반도로 보다 기상상태에 따른 통행속도 변화 민감도와 교통사고 심각도가 높게 나타나는 특성이 있다고 분석됨에 따라 고속도로의 교통류 특성변화에는 시정거리가 중요하게 작용하는 것으로 판단되었다. 따라서 본 연구에서는 통행속도가 높은 고속도로 기본구간의 교통류 특성에 영향을 미치는 주요 요인으로 교통량과 속도를 선정하였으며, 일정수준 이상의 교통량 확보가 가능한 수도권내 고속도로를 분석대상으로 선정하고 기상자료와 교통자료를 수집하여 시정거리 변화에 따른 고속도로 교통류 특성변화에 관한 연구를 수행하였다. 본 연구의 수행을 위하여 기존 문헌 고찰을 통해 자료수집 및 분석방법을 수립하고 고속도로의 시정거리 수준을 선정하며, 통계적 차이 검증을 수행하고 시정거리에 따른 고속도로의 교통류 특성 변화를 분석하여 용량 및 서비스 수준 분석 시 적용할 수 있는 방안을 강구하고자 한다.

Keywords

References

  1. Ministry of Construction and Transportation, "Korea highway capacity manual", The Korea Transport Institute.Korea Institute of Construction Technology.Korea Society of Transportation, 2001
  2. Transportation Research Board, "Highway Capacity Manual", National Research Council, Washington D.C., 2000
  3. Transportation Research Board, "Highway Capacity Manual", National Research Council, Washington D.C., 2010
  4. Manish A., Thomas H. Maze, Reginald Souleyrette, "Impacts of Weather on Urban Freeway Traffic Flow Characteristics and Facility Capacity", Proceedings of the 2005 Mid-Continent Transportation Research Symposium, Iowa State University, United States of America, August 2005
  5. Thomas H Maze, M. Agarwal, G. Burchett, "Whether Weather Matters to Traffuc Demand, Traffic Safety, and Traffic Flow", Iowa State University, 2005
  6. Manjunathan Kumar, P.E. and Shaowei wang E.I., "Impacts of weather on rural highway operations", Final Report, Western Transportation Institute College of Engineering Montana State University, 2005
  7. W. H. Jeon, H. J. Choi, "Revised Guideline for Roadside Safety Facilities on Adverse Weather", Korea Society of Road Engineers, Workshop Presentation File, pp.429-434, 2004
  8. S. W. Shim, K. C Choi, "Classification of Freeway Traffic Condition by the Impacts of Road Weather Factors ", Korean Society of Civil Engineers vol. 29, no. 7, pp.685-691, 2009
  9. J. O. Brooks, M. C. Crisler, N. Klein, R. Goodenough, R. W. Beeco, C. Guirl,P. J. Tyler, A. Hilpert, Y. Miller, J. Grygier, B. Burroughs, A. Martin, R. Ray, C. Palmer, and C. Beck, "Speed choice and driving performance in simulated foggy conditions", Accident Analysis and Prevention, vol. 43, pp.698-705, 2010
  10. F. J. Camacho, A. Garcia, and E. Belda, "Analysis of Impact of Adverse Weather on Freeway Free-Flow Speed in Spain", Transportation Research Record, no. 2169, pp. 150-159, 2010
  11. K. B. Shim, J. H. Yoon, "Analysis on Wet-pavement Accident Rate for Rainfall & Road Surface Levels", Journal of Traffic Safety Research, vol. 18, pp.55-70, 1999
  12. J. S. Choi, B. S. Son, J. S. Choi, "The Effect of Rain on Traffic Flows in Urban Freeway Basic Segments", Journal of Korea Society of Transportation, vol. 17, no.1, pp.29-40, 1999

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