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A study on the reduction ratio of highway capacity in accordance to occurrence of accident  

Lee, Seong-Hun (서울대학교 환경대학원)
Lee, Yeong-In (서울대학교 환경대학원)
Publication Information
Journal of Korean Society of Transportation / v.27, no.3, 2009 , pp. 141-148 More about this Journal
Abstract
An inappropriate evaluation of capacity leads to the incorrect and impractical result due to the transfer of error to the analysis and the evaluation on highway system. The traffic accident which reduces the capacity of road temporarily generates unpredictable congestion, causing difficulties in congestion management. Therefore, this research aims on the measurement of the capacity of the road in accordance to the speed at the accident which is a basic factor when performing analysis. Based on the given approach, the behavior of a vehicle in highway is understood to develop model of critical gap and model of maximum flow rate with respect to the speed of traffic flow. With the established model, the reduction rate of the capacity in highway system at the accident is measured. The result shows that the capacity is reduced by 37% when the speed of the traffic flow is 40km/h. Although the developed model can't be verified clearly, this research has shown that the reduction rate of the capacity in road system has a close relation to the speed.
Keywords
capacity; critical gap; capacity in accident; maximum traffic flow rate; accident management;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 이승준․박재범(2006), '고속도로 합류부 분석모형개발 및 서비스수준 평가 기법 개선 연구', 대한교통학회지, 제24권 제4호, 대한교통학회, pp.115-128
2 최재성․이승준(2001), '고속도로 합류부 임계차두 간격 및 용량 산정에 관한 연구', 대한교통학회지, 제19권 제6호, 대한교통학회, pp.195-205
3 Owen, J. R. and G. L. Urbanek(1998), 'Alternative Surveillance Concepts and Method for Freeway Incident Management', Planning and Tradeoff Analysis for Low-Cost Alternative, VOL 2 : Report # FHWA-RD-77-59, U.S.-DOT, FHWA
4 김점산 외(2003), '실시간 동적용량산정 기법에 관한연구', 대한국토·도시계획학회지, v.38, no.2, pp.145-157
5 정해훈(2006), '돌발상황으로 인한 차로감소구간의 용량감소에 관한 연구', 서울시립대학교 석사학위 논문
6 김민석(2002), '돌발상황으로 인한 교통영향 산정방법론에 관한 연구', 경기대학교 석사학위논문
7 Federal Highway Administration(1997), 'Freeway Management Handbook'
8 건설교통부(2004), '도로용량편람', 대한교통학회