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http://dx.doi.org/10.5392/JKCA.2013.13.09.400

Evaluation of Multi-legged Roundabout Using Surveyed Critical Gap Acceptance  

Park, Soon-Yong (한국건설기술연구원 SOC성능연구소 도로교통연구실)
Kim, Dong-Nyong (단국대학교 토목환경공학과)
Jeong, Jun-Hwa (한국건설기술연구원 SOC성능연구소 도로교통연구실)
Publication Information
The Journal of the Korea Contents Association / v.13, no.9, 2013 , pp. 400-409 More about this Journal
Abstract
In this paper, considering the characteristics of the driver at roundabouts by investigating the critical gap acceptance on various traffic conditions, multi-legged roundabouts were evaluated. The gap acceptance and rejection of 4-legged, 5-legged, 6-legged, and 7-legged roundabout were surveyed on real fields, and the critical gap acceptance was estimated using Raff's methods. Derived the critical gap acceptance was processed calibration and validation for micro-simulation, and then multi-legged roundabouts under variable conditions such as variations of traffic volume, turning ratio, and size of inscribed circle diameter were evaluated to verify operating conditions of roundabouts. As the results, according to the operating traffic volume and turning ratio, the inscribed circle diameters were proposed at each level of service. These inscribed circle diameters were able to reflect the guideline of geometric design for multi-legged roundabouts.
Keywords
Multi-legged Roundabout; Critical Gap Acceptance; Calibration and Validation; Roundabout Design;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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