Journal of Korean Society of Transportation (대한교통학회지)

Korean Society of Transportation (대한교통학회)
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Design Guideline Development for Managed Lane Access Spacing Using Gap Acceptance Theory

간격수락 이론을 이용한 다인승전용차로 진.출입을 위한 도로 디자인 지침정립

  • 양철수 (한국철도기술연구원 교통.물류연구실) ;
  • ;
  • 김현웅 (한국철도기술연구원 교통.물류연구실) ;
  • 권용장 (한국철도기술연구원 교통.물류연구실)
  • Received : 2010.05.31
  • Accepted : 2010.07.14
  • Published : 2010.08.31
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Abstract

The principal objective of this paper is to develop road design guidelines, especially for managed lane access spacing between the expressway on-ramp (or off-ramp) and managed lane access point. Managed lanes are typically located in the expressway median and are accessed by weaving across the mainlines. The high level of lane-changing activity present in weaving areas affects capacity significantly. One promising tool for the analysis of lane-changing activity is "gap acceptance theory." This paper estimates the capacity of weaving areas based on the estimated degree of traffic turbulence using gap acceptance theory. The degree of traffic turbulence is represented by a function of the probability that lane-changing vehicles can complete their maneuvers successfully in a given weaving distance. In developing road design guidelines based on the developed gap acceptance model, the minimum managed lane access spacing is determined where the capacity with respect to the managed lane access spacing becomes stable.

본 논문의 주요 목적은 도로디자인에 관련한 지침, 즉 고속도로 진 출입구간에서 도로중앙에 위치한 다인승전용차로 진 출입구간까지의 거리에 대한 지침을 마련하는 것이다. 다인승전용차로는 일반적으로 고속도로 중앙에 위치하고, 고속도로차로를 가로질러 위빙(weaving)하여 진입할 수 있다. 위빙구간에서의 많은 차로변경은 교통용량(capacity)에 심각한 영향을 끼친다. 위빙구간에서 이러한 차로변경의 영향을 분석하기 위해서는 간격수락이론이 유용하게 이용될 수 있다. 본 논문은 간격수락이론을 이용하여 산출된 차량의 상충의 정도를 기초로 하여 교통용량을 산출한다. 차량의 상충 정도는 주어진 위빙거리에서 차량의 위빙에 대한 성공 확률의 함수로 표현된다. 간격수락이론에 기초하여 위빙거리에 대한 지침을 마련함에 있어서, 이 논문은 위빙거리의 증가가 교통용량의 증가를 유발하지 않는 점을 위빙에 최소로 요구되는 거리로 정한다.

Keywords

References

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