KSCE Journal of Civil and Environmental Engineering Research (대한토목학회논문집)

Korean Society of Civil Engeneers (대한토목학회)
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A Study of Optimal Distance between Signalized Intersections and Roundabouts Considering Unbalanced Traffic Conditions

교통량 불균형을 고려한 회전교차로와 신호교차로간 최적거리 산정에 관한 연구

  • 안홍기 (Huaiyin Institute of Technology 교통공학과) ;
  • 김동선 (대진대학교 도시부동산공학과) ;
  • 배기목 (대진대학교 도시부동산공학과)
  • Received : 2021.05.27
  • Accepted : 2021.06.20
  • Published : 2021.12.01
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Abstract

An important factor that causes delays at roundabouts is unbalanced traffic conditions. The majority of domestic studies have tendedto focus on the proportion of entering traffic rather than conflicting traffic in order to explain unbalanced traffic conditions. Also, there is scant research on the proper distance between a signalized intersection and a roundabout. In this study, therefore, unbalanced traffic conditions and optimal distance between two intersections were analyzed using SIDRA software based on the Gajwa-ro roundabout in Icheon, where unbalanced traffic conditions occur during afternoon peak hours, and its position is 295 m from a signalized intersection. It was found that a state of unbalanced traffic conditions in the form of conflicting traffic caused delays at Gajwa-ro roundabout, and the queuing length on each approach was removed when there was 850 m of distance between two intersections.

회전교차로 주변 지체 유발의 중요한 원인 중 하나는 교통량 불균형 상태라 할 수 있다. 그러나 국내연구에서는 교통량 불균형을 규명하는 연구에 있어 상충교통량보다 진입교통량 비율에 집중하는 경향이 있다. 또한 회전교차로 건설 시 지체와 관련한 인접 교차로와의 적정거리에 관한 연구도 미흡하다고 할 수 있다. 따라서 본 연구에서는 실제 교통량 불균형이 발생하고 신호 교차로와 인접한 이천시 가좌로 회전교차로를 대상으로 교통량 불균형 및 적정거리 산정 연구를 SIDRA를 활용하여 분석하였다. 그 결과 가좌로 회전교차로는 상충교통량 측면에서 불균형 상태로 인해 회전교차로의 지체가 발생하였고 신호교차로와 거리가 850 m일 때부터 모든 접근로에서 대기행렬이 소멸하는 것으로 나타났다.

Keywords

References

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