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http://dx.doi.org/10.12815/kits.2014.13.1.109

Feasibility Evaluation of Lane Grouping Methods for Signalized Intersection Performance Index Analysis in KHCM  

Kim, Sang-Gu (전남대학교 물류교통학전공)
Yun, Ilsoo (아주대학교 교통시스템공학과)
Oh, Young-Tae (아주대학교 교통시스템공학과)
Ahn, Hyun-Kyung (아주대학교 건설교통공학과)
Kwon, Ken-An (교통안전공단 운영지원처)
Hong, Doo-Pyo (한국도로공사 도로사업처)
Publication Information
The Journal of The Korea Institute of Intelligent Transport Systems / v.13, no.1, 2014 , pp. 109-126 More about this Journal
Abstract
The level of service (LOS) of the Highway Capacity Manual (KHCM) has been used as a basic criterion at decision making processes for signalized intersections in Korea. The KHCM provides five steps for the signalized intersection analysis. Among them, lane grouping, which is the third step, significantly influence the final LOS. The current method presented in the KHCM, however, classifies a shared lane as a de facto turning lane group, even though the turning traffic of the shared lane is few. Thus, this research was initiated to provide an alternative. To this end, three alternatives were suggested, including the method based on the lane grouping presented in the U.S. Highway Capacity Manual, the method using turning ratio of shared turning lane, and the method using a threshold traffic volume in lane grouping. The feasibilities of the three methods were evaluated using a calibrated CORSIM model. Conclusively, the method using a threshold traffic volume in lane grouping outperformed.
Keywords
Highway Capacity Manual; Signalized Intersection; Control Delay; Lane Grouping; Microscopic Traffic Simulation;
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