ERA Ontology, Common Interface & NAPs

Align with the ERA ontology, Common Interface and NAPs.

Assessment scope

Step 12 - ERA Ontology, Common Interface & NAPs. Passenger TEL TSI operates two mandatory data channels: the Common Interface for operational messages (train running, composition, path requests) and National Access Points (NAPs) for static/commercial data (timetable, tariff, conditions of carriage). The ERA Ontology is the semantic master layer from which the XSD schema (TD-105) is derived. Version control requires simultaneous support for current and previous metadata versions until all trading partners agree to withdraw the previous version.

Governing articles & annex points

The 6 questions in this module are judged against these provisions of Commission Implementing Regulation (EU) 2026/253. Each reference opens the official text in the EU Official Journal on EUR-Lex.

Art. 6 Art. 14 Annex pt. 4.2 Annex pt. 4.9(d) Annex pt. 2.6.1(2) Annex App. C [P.2], [P.3], [P.4], [P.5] TD104 §1.1 Art. 12 TD-Ontology Art. 5 Art. 6(1)

Source transparency: inside the assessment, every verdict cites its exact article or annex point - the references above are extracted from this module’s question set, not written for marketing.

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