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Accident Conversion Effect Analysis of Installing Median Barriers  

Park, Min-Ho (서울시립대학교 교통공학과)
Park, Gyu-Yeong (서울시립대학교 교통공학과)
Jang, Il-Jun (삼성교통안전문화연구소)
Lee, Su-Beom (서울시립대학교 교통공학과)
Publication Information
Journal of Korean Society of Transportation / v.24, no.2, 2006 , pp. 113-124 More about this Journal
Abstract
Among tile traffic safety facilities, median barriers are installed above 4-lane national roads due to the awareness of haying an effect on preventing the front collision. Studies about the installation effect analysis of median harrier have been carried out through both at home and outside, mainly indicating total accident reduction effect on pertinent sections. In sum, study about how the accident occurrence form is changed at the point classified by the accident type or severity is insignificant. In the case of outside the country, calculating the accident reduction effect according to the type of median barriers is main research and in domestic, though there is a part of researches assessing reduction effect by accident types, it is not reliable in the view or statistics because of using only 1year's before-aftev data installing the facility, So in this Paper. it is the main purpose to presume the accident conversion effect. For this, we conduct an investigation and collect data about 7-year's accident data containing before-after Project, safety facilities foundation records and index of road alignment on the subject of 4-1ane national roads(108.6km) existing median barrier. Next. using the empirical bayes method, we estimate a model construction and accident conversion effect of accident type severity. We expect the result or this Paper will be applied for a policy execution and Presentation of facility standard related to median barrier from now on.
Keywords
중앙분리대;사고전환효과;경험적 베이즈(Empirical Bayes)방법;사고유형;심각도;
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Times Cited By KSCI : 1  (Citation Analysis)
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