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Priority to JP4726685UpriorityCriticalpatent/JPS61162478U/ja
Publication of JPS61162478UpublicationCriticalpatent/JPS61162478U/ja
PRACTICAL EXPERIENCES WITH THE SAFETY OF A NUMBER OF ROAD TYPES: A STUDY INTO THE EFFECTS OF A NUMBER OF INFRASTRUCTURAL MEASURES ON ROAD SAFETY, IN RELATION TO THE'SUSTAINABLY SAFE'PRICINPLES