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인병철(In Buung-Chul),김경환(Kim Kyung-Hwan),박병호(Park Byung-Ho) 대한국토·도시계획학회 2010 國土計劃 Vol.45 No.2
This study deals with the 3-leg modern roundabout. The roundabouts generally have such the merits as high capacity, delay reduction, safety improvement, and others. However, when the pedestrian crossings increase, the delays decrease the capacity of roundabout. The objective of this study is to analyze the operational efficiency of 3-leg roundabout in consideration of the pedestrian traffic. The main results analyzed are the followings. First, 3-leg single-lane roundabout are analyzed to be more efficient than signalized intersection in the case of total entering vehicles less than 3,200vph and no pedestrians. However, the operational efficiency of roundabout are evaluated to largely decreases according to the increase of pedestrian. Second, 3-leg double-lane roundabout are analyzed to be more efficient than signalized intersection in the case of total entering vehicle less than 6,400vph and no pedestrians. However, the operational efficiency of roundabout are evaluated to gradually decrease in the case of pedestrians more than 300person/hour. Finally, the diversion point(total entering vehicles) from roundabout to signal are analyzed to decrease by little when the pedestrian traffic increases.
aaSIDRA를 이용한 3지 회전교차로의 효과 비교 분석
박병호 ( Byung Ho Park ),인병철 ( Byung Chul In ) 충북대학교 산업과학기술연구소 2010 산업과학기술연구 논문집 Vol.24 No.1
This study deals with the 3-legged roundabout. The objective of this study is to analyze the effectiveness of 3-legged roundabout using aaSIDRA. In pursuing the above, this study gives particular attention to comparative analysis among the roundabout, signalized and non-signalized intersections. The main results are the followings. First, in the case of single-lane approach, the effectiveness of signalized intersections with total entering volume more than 1,500pcph and non-signalized intersections with total entering volume more than 900pcph are analyzed to be rapidly decreasing. Thus, the effectiveness of roundabout is evaluated to be better than those of signalized and non-signalized intersections. Second, in the case of double-lane approach, the effectiveness of roundabout with total entering volume less than 3,000pcph are analyzed to be good. However, in the case of more than 3,000pcph, the signalized intersections are evaluated to be better than the roundabouts.
박병호(Park Byung-Ho),박상혁(Park Sang-Hyuk),이영민(Lee Young-Min),인병철(In Byung-Chul) 대한국토·도시계획학회 2008 國土計劃 Vol.43 No.6
This study deals with the traffic accidents at the 3-legged and 4-legged unsignalized intersections in Cheongju. The goals are to analyze the characteristics of traffic accidents and to develop the accident models. In pursuing the above, this study gives the particular attentions to testing the ZAM(zero-altered model). The main results are as follows: First, no-accident intersections are analyzed to have longer sight distances, fewer traffic volumes and more right angle crossings. Second, in the case of 3-legged intersections, Poisson and negative binomial models are evaluated to be more suitable by Vuong statistics and t-statistics than ZIP(zero-inflated poisson) and ZINB(zero-inflated negative binomial). Otherwise, in the case 4-legged intersections, ZIP and ZINB models are analyzed to be statistically more significant. Finally, the models analyzed show that the main accident factors are the traffic volume(ADT), number of crossing walks, angle of crossing, sight distance and road width.
박병호(Park, Byeong-Ho),인병철(In, Byeong-Cheol) 대한교통학회 2008 대한교통학회 학술대회지 Vol.59 No.-
1966년 영국에서 최초로 개발된 현대식 회전교차로는 용량증대와 유동성 확보, 안정성 증진 등과 같은 많은 장점을 가지고 있으며 설치 이후 관리비용이 신호교차로에 비해 저렴하기 때문에 현재 유럽 및 미국에서 많이 설치되고 있는 실정이다. 회전교차로는 크게 현대식 회전교차로와 재래식 회전교차로(교통서클 혹은 로타리)으로 구분되며, 이러한 구분에 따른 차이는 교차로내로 차량이 진입할 때 통행우선권을 누가 가지는가에 따라 정해진다. 재래식 회전교차로의 경우 일반적으로 교통섬을 중심으로 회전하는 차량에 대해 진입차량이 우선적으로 진행함에 비해 현대식 회전교차로는 교차로 내에서 회전하는 차량에게 진입차량이 통행을 양보하는 운영형태를 가지게 된다.