PURPOSES : The objective of this study is to develop a pavement rehabilitation decision tree considering current pavement condition by evaluating severity and distress types such as roughness, cracking and rutting. METHODS: To improve the proposed overall rehabilitation decision tree, current decision tree from Korea and decision trees from other countries were summarized and investigated. The problem when applying the current rehabilitation method obtained from the decision tree applied in Seoul was further analyzed. It was found that the current decision trees do not consider different distress characteristics such as crack type, road types and functions. Because of this, different distress values for IRI, crack rate and plastic deformation was added to the proposed decision tree to properly recommend appropriate pavement rehabilitation. Utilizing the 2017 Seoul pavement management system data and considering all factors as discussed, the proposed overall decision tree was revised and improved. RESULTS: In this study, the type of crack was included to the decision tree. Meanwhile current design thickness and special asphalt mixture were studied and improved to be applied on different pavement condition. In addition, the improved decision tree was incorporated with the Seoul asphalt overlay design program. In the case of Seoul's rehabilitation budget, rehabilitation budget can be optimized if a 25mm milling and overlay thickness is used. CONCLUSIONS: A practical and theoretical evaluation tool in pavement rehabilitation design was presented and proposed for Seoul City.

해상에서 유출된 기름은 방제를 잘 하였더라도 일부는 해안으로 밀려가 해안을 오염시키게 된다. 해양경찰청의 국가방제기 본게획에 의하면 연안이용 빈도가 높은 우리나라의 해안방제에 있어 지방자치 단체장은 주무기관 역할을 하도록 되어 있으며, 해안방 제시 방제종료기준에 있어서는 보다 세밀하고 구체적인 의사결정체계를 구축할 필요가 있다. 방제종료기준 관련 의사결정체계는 크게 방제종료기준 설정단계, 방제종료 판단단계 등 두 가지 단계로 이원화할 필요가 있다. 방제종료기준 설정단계는 주로 사고지역별 해당 지자체(해안을 이용 관리 보전하는 관리청)가 최고의사결정기구의 중심 역할을 할 필요가 있으며, 방제종료 판단단계에서는 방제대책 본부 및 지자체의 최고의사결정기구가 합동으로 중심 역할을 할 필요가 있다. 이와 같이 의사결정협의회를 구성하여 해안방제종료 결 정에 대한 기준을 우리나라 실정에 적합하도록 의사결정체계를 제시하고자 한다.