Guidance

NTSN: Northern Ireland

National Technical Specifications Notice (NTSN) relating to Northern Ireland (NI).

Applies to Northern Ireland

Documents

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Details

This National Technical Specification Notice (NTSN) for Northern Ireland (NI) applies to rail projects that will seek authorisation to place new, upgraded or renewed railway infrastructure into service in Northern Ireland only.

TheseĀ NTSNsĀ have been published by the Secretary of State for Transport according to regulation 3B of theĀ .

Updates to this page

Published 12 June 2025

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