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DIN CEN/TS 15531-4

M00000420

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DIN CEN/TS 15531-4 Public transport - Service interface for real-time information relating to public transport operations - Part 4: Functional service interfaces: Facility monitoring; English version CEN/TS 15531-4:2021

standard by Deutsches Institut Fur Normung E.V. (German National Standard), 05/01/2022

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