National Technical Specification Notices NTSNs

Consultation on draft UK National Technical Specification Notices (NTSNs), which will replace EU Technical Specifications for Interoperability (TSIs) in the event of a no-deal Brexit.

In the event that the UK leaves the EU without a deal, a new domestic railway technical standards regime is required to replace the EU’s Technical Specifications for Interoperability (TSIs). Regulations have been made and laid in Parliament (S.I. 2019/345) by the Department for Transport (DfT) to come into effect in the event of no deal, which would enable a new system of UK National Technical Specification Notices (NTSNs) that will replace TSIs, but preserve their technical content. The Department for Transport has been working closely with RSSB to create the new system of UK National Technical Specification Notices (NTSNs) that will replace TSIs. These NTSNs will be published by the Secretary of State and become law when the UK leaves the EU in a no-deal scenario.

The approach to converting TSIs into a domestic system of NTSNs has been to preserve, where appropriate, the same rights and obligations at the point the UK leaves the EU. The technical requirements in force at that time also remain the same. However, given that the NTSNs will only apply to the UK, it has been necessary to amend the content as some provisions would be deficient as the UK would no longer a member of the EU (also known as ‘inoperabilities’). For examples, references to ‘Member States’ or EU institutions.

The DfT is seeking stakeholders’ views on the changes made to address these inoperabilities and is not seeking views on the technical requirements. This exercise does not concern future TSIs and possible alignment or divergence and associated arrangements. More information about this process will follow in due course.

The draft NTSNs will be released in stages. Track change and clean versions of the issued NTSNs can be accessed below.

A draft DfT guidance document sets out the general approach being taken to resolve the inoperabilities that exist in the TSIs when the UK is no longer a member of the EU. This can also be accessed below.

Please note that these NTSNs are the original versions that were published for consultation therefore still include some errors (such as TPWS not being listed as a Class B system) and content which has since been updated to reflect industry feedback. Updated versions of the NTSNs reflecting changes based on comments received from the industry will be published here in due course and will also reflect the TSI changes that came into force in June 2019.

If you have any comments on the content of these NTSNs please email interoperability@dft.gov.uk.

Resources

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General approach for the production of NTSNs
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PRM NTSN - clean version
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PRM NTSN - track-changed
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LOC PAS NTSN - clean version
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LOCPAS NTSN - track change version
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INF NTSN - clean version
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INF NTSN - track changed version
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CCS NTSN - clean version
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CCS NTSN - track changed version
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ENE NTSN - clean version
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ENE NTSN - track changed version
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NOI NTSN - clean version
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NOI NTSN - track changed version
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OPE NTSN - clean version
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OPE NTSN - track changed version
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SRT NTSN - clean version
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SRT NTSN - track changed version
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TAF NTSN - clean version
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TAF NTSN - track changed version
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TAP NTSN - clean version
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TAP NTSN - track changed version
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WAG NTSN - clean version
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WAG NTSN - track changed version
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Vaibhav Puri
Tel: 020 3142 5446
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