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— 1140 стр.
Public transport - Service interface for real-time information relating to public transport operations - Part 3: Functional service interfaces; English version EN 15531-3:2015— 131 стр.