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Development of Capacity Models Based on the Travel Characteristics at Roundabout

회전교차로의 통행특성에 근거한 용량 모형 개발

  • Kim, Tae Young (University-Industrial Cooperation Research Institute, Pohang University of Science and Technology) ;
  • Beak, Tae Hun (Department of Urban Engineering, Chungbuk National University) ;
  • Park, Byung Ho (Department of Urban Engineering, Chungbuk National University)
  • 김태영 (포항공과대학교 산학협력연구소) ;
  • 백태헌 (충북대학교 도시공학과) ;
  • 박병호 (충북대학교 도시공학과)
  • Received : 2014.05.29
  • Accepted : 2014.09.02
  • Published : 2014.12.31

Abstract

Recently, many studies have been undertaken regarding the of introduction at roundabout in Korea. The studies related to roundabout capacity, however, is insufficient. Thus, the goal of this study is to develop a capacity model based on real data. The main results are as follows. First, roundabout capacity in Korea was analyzed using HCM capacity model based on critical gap and following time estimated by Probit model. Entry capacity in Korea was evaluated to be similar to that of the U.S in the case of low circulating flow($Q_c$), but higher in the case of high circulating flow($Q_c$). Second, the basic capacity models in Korea were newly developed based on real traffic data. Third, models that consider geometric structure were developed based on the basic models. Finally, all of the developed models mentioned above were analyzed to be statistically significant.

최근 국내 회전교차로의 도입에 따라 다양한 연구가 수행되어 왔다. 하지만 회전교차로의 용량에 대한 연구는 아직 부족한 실정이다. 이에 이 연구의 목적은 실 자료를 바탕으로 용량 모형을 개발하는데 있다. 연구의 주요 결과는 다음과 같다. 첫째, 프로빗 모형을 이용하여 산정한 임계간격과 추종시간에 근거한 미국 HCM 용량모형을 이용하여 국내 회전교차로의 용량이 분석되었다. 국내의 진입용량은 회전교통류율($Q_c$)이 적을 경우에는 미국과 비슷한 수준이지만, 회전교통류율($Q_c$)이 많아지면 미국보다 높은 것으로 평가되었다. 둘째, 실 교통량 자료를 기반으로 국내 회전교차로의 기본용량모형이 새롭게 개발되었다. 셋째, 기본용량모형을 근거로 기하구조를 고려한 모형이 개발되었다. 마지막으로 위에서 개발된 모든 모형은 통계적으로 유의한 것으로 분석되었다.

Keywords

References

  1. Cheng J., Yang X., Deng W., Huang X. (2008), Driver's Critical Gap Calibration at Urban Roundabouts: A Case Study in China, Tsinghua Science & Technology, 13(2), 237-242. https://doi.org/10.1016/S1007-0214(08)70038-5
  2. Feng X., Zong Z. T. (2007), Driver Behavior and Gap-Acceptance Characteristics at Roundabouts in California, 2007 TRB, 2071, 117-124.
  3. Guo R., Lin B. (2010), Traffic Operation Performances at Roundabout Weaving Sections, Journal of Transportation Systems Engineering and Information Technology, 10(3), 29-34. https://doi.org/10.1016/S1570-6672(09)60042-8
  4. Jeon W. H., Doh C. W. (2003), Analysis of the Entry Capacity of Roundabouts, J. Korean Soc. Transp., 21(3), Korean Society of Transportation, 59-69.
  5. Kim T. Y., Park M. K., Park B. H. (2012), A Critical Gap Model for Roundabouts in Korea, J. Korean Soc. Transp., 30(2), Korean Society of Transportation, 93-100. https://doi.org/10.7470/jkst.2012.30.2.093
  6. Koh D. S., Lee Y. J., Chung J. H. (2000), Base Critical Gaps and Follow-Up Times by Traffic Movements for Four-Legged Unsignalized Intersections in Suburban of Seoul, Korea, J. Korean Soc. of Trans, 18(6), Korean Society of Transportation, 19-32.
  7. Lee Y. J., Kim S. K. (2002), Modified Adjustment Factors in Estimating Capacity for Modern Roundabouts, Journal of The Korean Society of Civil Engineers, 22(2-D), 185-195.
  8. Ministry of Land, Infrastructure and Transport (2013), Korea Highway Capacity Manual.
  9. Park B. H., Jung Y. I. (2005), Performance Evaluation of 4-Leg and 1-Lane Modern Roundabout Using SIDRA, Journal of the Korean Regional Development Association, 17(2), 89-106.
  10. Transportation Research Board (2000), Highway Capacity Manual.
  11. Transportation Research Board (2010), Highway Capacity Manual.
  12. Vlahos E., Polus A., Lacombe D., Ranjitkar P., Faghri A, Fortunato B. R. (2008), Evaluating the Conversion of All-Way Stop-Controlled Intersections into Roundabouts, Journal of the Transportation Research Board, 2078, 80-89. https://doi.org/10.3141/2078-11

Cited by

  1. Traffic Volume Criteria for Roundabouts Based on Left-Turn Ratio vol.15, pp.4, 2016, https://doi.org/10.12815/kits.2016.15.4.054