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A Study of Level of Service Criteria for Roundabouts  

Kim, Eung-Cheol (인천대학교 토목환경공학과)
Ji, Min-Gyeong (여주군청 지역경제과)
Publication Information
Journal of Korean Society of Transportation / v.27, no.1, 2009 , pp. 7-16 More about this Journal
Abstract
Korea Highway Capacity Manual (2001) proposes only LOS(Level of Service) analysis method on non-control and two-way-stop intersections, not dealing with the analysis method on LOS for roundabouts, nor even including the term 'roundabout'. This study selects proper MOEs for roundabouts and criteria the LOS through simulation analysis. To attain this goal, the authors reviewed the methods to select proper MOEs in the first step, criteria the Los. For this study, the MOEs were chosen from existing literature, and used for the criteria. The MOEs to be applied to roundabouts in this research were entry traffic volume, v/c (volume/capacity) ratio, and average vehicle delays. The results showed that the maximum entry traffic volume(LOS F) at local one-lane roundabout was analyzed to be 1,700pcph and average vehicle delay 18 seconds LOS A was analyzed as 700pcph and average vehicle delay 3 seconds and v/c 0.41 in this case Maximum entry traffic volume(LOS F) at local area 2 lane roundabouts was analyzed as 2,900pcph and their average vehicle delay as 31 seconds LOS A was analyzed to be 1.500pcph and average vehicle delay 8 seconds, v/c 0.52.
Keywords
Roundabout; MOE; LOS; VISSIM; Nonsignalized intersection;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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