# The Railways (Interoperability) (High-Speed) Regulations 2002, Paragraph 1: EC declaration


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:

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Source: https://www.legislation.gov.uk/uksi/2002/1166/schedule/4/paragraph/1n2 (the official version)
Page: https://openlegislation.uk/railways-interoperability-high-speed-regulations-2002/schedule-4/paragraph-1n2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.