『道路構造令の解説と運用』にみる日本の道路計画・設計思想の変遷

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タイトル別名
  • A HISTORICAL REVIEW OF HIGHWAY PLANNING AND DESIGN POLICY IN "COMMENTARY ON JAPANESE ROAD STRUCTURE ORDINANCE"

説明

 The "Commentary on Japanese Road Structure Ordinance" is a book which narrates the "Japanese Road Structure Ordinance" and was revised three times from the original version published in 1960. This paper puts together and formulates the progress and interpretation of hitory of each revision. The main results derived are as below; the thought of road design is changed from the intent of national uniformity of road structures at the beginning to the flexible application of the ordinance regulations for suitable road design for the regional condition recently; hierarchy in road classification is not clear so that the target level of service and the methodology in design are not fully established yet; the contradiction caused in the treatment of demand and capacity as daily volume should be dissolved; and it is needed that the establishment of new proper standards of lane width, design speed, and so on in road design or traffic operation through confirmation of the course and conotation of the such standards setting.

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