계층적 수집배송시스템의 최적 계층 및 시설수 산정에 관한 연구

For improving an efficiency of the freight transport system in city logistics, it is important issue that setting in facilities as structure being suitable for hierarchical level and consolidating collectionㆍdistribution system. Accordingly, this study plans hierarchical transport system in consideration of collection of high level facility or distribution of low level facility on the assumption that is economies of scale. And, we determine that the number of hierarchical levels and the number of intermediate facilities. For this analysis, we survey the actual operating condition of freight transport as doing interview to truck's driver in Busan's C.B.D. And we determine optimal system in the number of hierarchical levels and the number of intermediate facilities. In this result, the number of hierarchical levels is 3 level. And, the number of I hierarchical level's facility, onstreet loading bay is 483 and the number of 2 level facility, depot and distribution in city is 22, the number of 3 level facility, freight terminal is 1.