(l)

Directive 2001/16/EC of the European Parliament and of the Council of 19 March 2001 on the interoperability of the trans-European conventional rail system · European Union

‘upgrading’ means any major modification work on a subsystem or part subsystem which requires fresh authorisation for putting into service within the meaning of Article 14(1);

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Source: EUR-Lex (Cellar) · retrieved 2026-10-29 · Text as adopted (Official Journal); later amendments are not incorporated in this text.