1.

Interoperability constituents The EC declaration applies to the interoperability constituents involved in the interoperability of the trans-European high-speed rail systems, as referred to in Article 3. These interoperability constituents may be: 1.1. multiple-use constituents These are constituents that are not specific to the railway system and which may be used as such in other areas; 1.2. multiple-use constituents having specific characteristics These are multiple-use constituents which are not, as such, specific to a railway system, but which must display specific performance levels when used for railway purposes; 1.3. specific constituents These are constituents that are specific to railway applications.

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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.