2012Journal of the Korean Society of Civil EngineersOpen access

Effectiveness Analysis of Transforming Many-Legs Type Intersection into Roundabout in Jeju

Dong‐Weon Lee, Sang Ick Ko, Dong Wook Lee

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Abstract

회전교차로는 평면교차로의 일종으로 교차로 중앙에 원형교통섬을 두고 교차로를 통과하는 자동차가 원형교통섬을 우회하도록 하는 교차로 형식이다. 본 연구에서는 신호교차로와 회전교차로의 운영 및 경제적 효과를 분석하기 위해서 제주지역의 5개 교차로를 중심으로 회전교차로 설치에 따른 비교 분석을 실시하였다. 분석 결과, 차량평균지체 측면에서 신호교차로에 비해 회전교차로가 65.6%%에서 91.77%의 개선효과가 있는 것으로 분석되었다. 차량운행비용과 시간가치비용을 종합한 교통혼잡비용의 효과를 분석한 결과, 년간 58.59%(D intersection)에서 81.69%(B intersection)의 비용절감 효과가 있는 것으로 분석되었다. 이를 통해 제주지역의 경우 신호교차로에 비해서 회전교차로가 운영 효과가 뛰어난 것으로 조사되었다. Roundabout is an intersection that allows vehicles to pass through the intersection by circulating the circular traffic island at the center of the intersection. In this study, a comparative analysis was conducted on roundabout at five locations in order to deduce the operational result and financial effect of roundabout and signal intersection. As for the operational result, it was found that roundabout showed improvement effect in the average delay per vehicle compared to that of signal intersection by minimum of 65.6% and maximum of 91.77%. it was found that roundabout showed financial cost-saving effect in the traffic congestion cost compared to that of signal operation by minimum of 58.59% and maximum of 81.69% per year. It can be known from these analysis results that roundabout has significant operational effects under certain amount of traffic volume by allowing vehicles to pass through the intersection in a continuous way without much waiting time and stoppage from signal control.

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회전교차로는 평면교차로의 일종으로 교차로 중앙에 원형교통섬을 두고 교차로를 통과하는 자동차가 원형교통섬을 우회하도록 하는 교차로 형식이다. 본 연구에서는 신호교차로와 회전교차로의 운영 및 경제적 효과를 분석하기 위해서 제주지역의 5개 교차로를 중심으로 회전교차로 설치에 따른 비교 분석을 실시하였다. 분석 결과, 차량평균지체 측면에서 신호교차로에 비해 회전교차로가 65.6%%에서 91.77%의 개선효과가 있는 것으로 분석되었다. 차량운행비용과 시간가치비용을 종합한 교통혼잡비용의 효과를 분석한 결과, 년간 58.59%(D intersection)에서 81.69%(B intersection)의 비용절감 효과가 있는 것으로 분석되었다. 이를 통해 제주지역의 경우 신호교차로에 비해서 회전교차로가 운영 효과가 뛰어난 것으로 조사되었다. Roundabout is an intersection that allows vehicles to pass through the intersection by circulating the circular traffic island at the center of the intersection. In this study, a comparative analysis was conducted on roundabout at five locations in order to deduce the operational result and financial effect of roundabout and signal intersection. As for the operational result, it was found that roundabout showed improvement effect in the average delay per vehicle compared to that of signal intersection by minimum of 65.6% and maximum of 91.77%. it was found that roundabout showed financial cost-saving effect in the traffic congestion cost compared to that of signal operation by minimum of 58.59% and maximum of 81.69% per year. It can be known from these analysis results that roundabout has significant operational effects under certain amount of traffic volume by allowing vehicles to pass through the intersection in a continuous way without much waiting time and stoppage from signal control.

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Available abstract

회전교차로는 평면교차로의 일종으로 교차로 중앙에 원형교통섬을 두고 교차로를 통과하는 자동차가 원형교통섬을 우회하도록 하는 교차로 형식이다. 본 연구에서는 신호교차로와 회전교차로의 운영 및 경제적 효과를 분석하기 위해서 제주지역의 5개 교차로를 중심으로 회전교차로 설치에 따른 비교 분석을 실시하였다. 분석 결과, 차량평균지체 측면에서 신호교차로에 비해 회전교차로가 65.6%%에서 91.77%의 개선효과가 있는 것으로 분석되었다. 차량운행비용과 시간가치비용을 종합한 교통혼잡비용의 효과를 분석한 결과, 년간 58.59%(D intersection)에서 81.69%(B intersection)의 비용절감 효과가 있는 것으로 분석되었다. 이를 통해 제주지역의 경우 신호교차로에 비해서 회전교차로가 운영 효과가 뛰어난 것으로 조사되었다. Roundabout is an intersection that allows vehicles to pass through the intersection by circulating the circular traffic island at the center of the intersection. In this study, a comparative analysis was conducted on roundabout at five locations in order to deduce the operational result and financial effect of roundabout and signal intersection. As for the operational result, it was found that roundabout showed improvement effect in the average delay per vehicle compared to that of signal intersection by minimum of 65.6% and maximum of 91.77%. it was found that roundabout showed financial cost-saving effect in the traffic congestion cost compared to that of signal operation by minimum of 58.59% and maximum of 81.69% per year. It can be known from these analysis results that roundabout has significant operational effects under certain amount of traffic volume by allowing vehicles to pass through the intersection in a continuous way without much waiting time and stoppage from signal control.

Key concepts: Roundabout, Intersection (aeronautics), Transport engineering, SIGNAL (programming language), Traffic volume, Computer science, Mathematics, Engineering

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