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The Journal of The Korea Institute of Intelligent Transport Systems Vol.10 No.4 pp.107-115
비보호 좌회전 효율성 제고를 위한 대향 직진 교통류의 Gap-Time기준 연구
Study on The Warranty of Opposing Through Flow Gap Acceptance Time for more Efficient Management of Permissive Left-Turn
Abstract
Since 2009, The Korean National Police Agency has been pushed "permissive left-turn" forward, in order to making progress in Korean traffic operations system. Preceding researches, manuals and guidelines present 6 standards(# of accidents, # of lanes, pedestrian volume, sight, # of permissive left-turn lanes, vehicle volume) as installation permissive left-turn. But in practical affairs, it is most important that secure enough Gap-time between permissive left-turn vehicle and opposite through lane vehicle to make permissive left-turn vehicle move safer and more efficiently. This study suggests applying gap acceptance theory in microscopic model to permissive left-turn installation standards. Analysis methods of this study are field data survey, statistical analysis and microscopic simulation analysis. This study collected field data by using AVI recording and measured permissive left-turn vehicle intersection passing time(T1) and against the opposite through lane vehicle Gap-time(T2). And statistical analysis performed about two values that measured before to predict the functionality between T1 and T2. These studies to overcome the limit of sample size carried out a microscopic simulation(VISSIM) plan and collect more samples to input statistical analysis.
