Rail interoperability: current national technical rules
National technical rules (NTRs) supplement National Technical Specification Notices (NTSN) with network or country-specific requirements.
- From:
- Department for Transport
- Published
- 21 July 2011
- Last updated
-
824OctoberApril20242025 — See all updates
Applies to England, Scotland and Wales
Documents
National technical rules for vehicles
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National technical rules for infrastructure
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Details
NTRs can perform several functions, such as:
- making a provision for country or network-specific cases
- filling in open points identified in the national technical specification notices (NTSNs)
- setting requirements to maintain technical compatibility with existing assets that do not conform to the requirements of NTSNs
Background
Under Regulation 3C of the Railways Interoperability Regulations 2011, the Secretary of State for Transport must publish a list of all national technical rules (NTRs) applying in the United Kingdom and the list must, where appropriate, specify the notified national technical rule (NNTR) that an NTR replaces.
These are the lists of NTRs for infrastructure and vehicles that replace the lists of NNTRs previously notified to the Commission by the Secretary of State.
Related documents
Updates to this page
Published 21 July 2011
Last updated 824 OctoberApril 2024
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Details
NTRs can perform several functions, such as:
- making a provision for country or network-specific cases
- filling in open points identified in the national technical specification notices (NTSNs)
- setting requirements to maintain technical compatibility with existing assets that do not conform to the requirements of NTSNs
Background
Under Regulation 3C of the Railways Interoperability Regulations 2011, the Secretary of State for Transport must publish a list of all national technical rules (NTRs) applying in the United Kingdom and the list must, where appropriate, specify the notified national technical rule (NNTR) that an NTR replaces.
These are the lists of NTRs for infrastructure and vehicles that replace the lists of NNTRs previously notified to the Commission by the Secretary of State.
Related documents
Updates to this page
Sign up for emails or print this page
Update history
2025-04-24 10:15
GMRT2400 Engineering Design of On-track Machines in Running Mode issue 6.2 superseded by issue 6.3.
2024-10-08 14:41
Vehicle rules updates: revisions to GERT8006 issue 4 and GMRT2141 issue 5. Infrastructure rules updates: revisions to GKRT0057 issue 2 and GERT8006 issue 4. New guidance GEGN8616 added and applies to new rail vehicles and new and modified bridges.
2024-07-22 13:06
National technical rules for infrastructure: infrastructure based train detection interface requirements issue 3.2 (GKRT0028) and G 3.1.7 guidance added.
2024-03-22 14:36
Infrastructure list updated: GCRT5021 track system requirement standards added, appendices A to H have been withdrawn and out-of-date reference in GMRT2173 (issue 4 size of vehicles and position of equipment) removed.
2024-01-15 16:17
In the infrastructure rules, GIRT7073 has been amended to remove an incorrect reference. There is no change to the vehicle rules.
2023-08-04 11:20
GIRT7073 entry amended to include requirements relating to cross-wind adjustments and structure gauge considerations. Other rules listings were updated to replace references to TSI with references to NTSN.
2023-03-15 09:43
Updates made to GLRT1210 and GMRT2111 to reflect recent technical changes made.
2022-12-20 14:00
Updated entries for GERT8073 in both lists plus GKRT0028 (infrastructure) and GMRT2173 (vehicles).
2022-09-20 11:59
Updated entries for GMRT2173 and GIRT7020 to alter their issue numbers and reflect wider changes made to both.
2022-07-15 13:35
Information updated confirming that no changes have been made in the June to September 2022 period.
2022-03-31 09:36
Updated entry for GMRT2161 to replace reference to TSI with reference to NTSN.