Public transport - Service interface for real-time information relating to public transport operations - Part 2: Communications infrastructure; English version EN 15531-2:2022
Edition 2023-02

Public transport - Service interface for real-time information relating to public transport operations - Part 3: Functional service interfaces; English version EN 15531-3:2022
Edition 2022-10

Electronic data interchange for administration, commerce and transport (EDIFACT) - Application level syntax rules (Syntax version number: 4, Syntax release number: 2) - Part 10: Syntax service directories (ISO 9735-10:2014)
Edition 2015-05

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
Edition 2022-05

Public transport - Service interface for real-time information relating to public transport operations - Part 6: Functional service interfaces: Control Actions; English version CEN/TS 15531-6:2024
Edition 2024-08

Intelligent transport systems - Public transport - Open API for distributed journey planning; English version CEN/TS 17118:2017
Edition 2018-02

Public transport - Service interface for real-time information relating to public transport operations - Part 5: Functional service interfaces situation exchange: Situation exchange; English version CEN/TS 15531-5:2022
Edition 2022-11

Public transport - Network and Timetable Exchange (NeTEx) - Part 1: Public transport network topology exchange format; English version CEN/TS 16614-1:2020, only on CD-ROM
Edition 2020-07