접근로별 교통량을 고려한 터보형 회전교차로도입 기준에 관한 연구
A Study on the Introduction Criteria of Turbo Roundabout by Considering Approach Lane’s Traffic Volume
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초록
터보형 회전교차로는 회전교차로 내부의 주행 경로를 분리하여 차선 변경 없이 회전교차로를 통과할 수 있는 회전교차로이다. 따라서 기존 2차로형 회전교차로의 합·분류 및 차선 변경시 발생하는 상충 문제를 최소화할 수 있는 장점을 갖고 있다. 본 연구에서는 접근로별 교통량을 고려한 터보형 회전교차로 유형 도입 기준을 제시하고, 그 효과는 VISSIM을 통해 분석하였다. 분석 결과 진입교통량이 균등하고 2,000~2,600대/시 경우 2차로형 회전교차로, Basic(Turbo) 의 도입이 타당한 것으로 분석되었다. 반면 진입교통량이 불균등하고 2,400~2,800대/시이면서주도로가 서로 마주 보는 접근로일 때, Basic(Turbo), Egg(Turbo)가, 2,000~2,400대/시이면서 주도로가 서로 인접한 접근로일 때, Knee(Turbo)가 도입 타당한 것으로 분석되었다.
Abstract
A turbo roundabout is a type of roundabout that allows vehicles to pass through the roundabout without changing lanes by separating the internal lanes. Thus, it has the advantage of minimizing conflicts arising from converging, diverging, and lane changing in existing two-lane roundabouts. In this study, the criteria for introducing a turbo roundabout are suggested by considering traffic volume conditions of the approach lane, and the results were analyzed using a VISSIM. The results showed that the 2-lane roundabout and basic(turbo) are the appropriate types when the approach traffic volume is a balanced condition with 2,000–2,600veh/h. On the other hand, basic(turbo) and egg(turbo) are appropriate types when the approach traffic volume is an unbalanced condition with 2,400–2,800veh/h under the condition of a major road grouped as an opposite combination. The major road is grouped as an adjacent combination when there is an approach volume of 2,000– 2,400veh/h, and the knee(turbo) is the appropriate type in this case.
참고문헌 (11)
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