Standards Catalogue

Interface between Station Platforms, Track, Trains and Buffer Stops​

This document sets out requirements for the design and maintenance of station platforms for their safe interface with trains, track and buffer stops.

​Application of the Accessibility NTSN​

This document contains guidance on the application of the Accessibility (ACC) NTSN, particularly when undertaking work that would not necessarily…

Functionality and Management of Track Circuit Assisters (TCAs) on Rail Vehicles

This document sets out requirements for the functionality, testing and management of failures of TCAs on rail vehicles.

Compatibility Requirements for Track Circuit Assisters (TCAs) on Rail Vehicles

This sets out Great Britain (GB) requirements on where TCAs shall be fitted onto a vehicle and how they shall be set up.

Operation of Heritage Trains​

This document sets out requirements for managing the planning and operation of heritage train services on the GB mainline railway.

Guidance on the Infrastructure National Technical Specification Notice (INF NTSN)​

This document gives guidance on interpreting the requirements of the Infrastructure National Technical Specification Notice (INF NTSN) for application…

Reporting of Safety Related Information

The document sets out requirements for entering information into the Safety Management Intelligence System (SMIS). SMIS has been replaced by the Safe…

Operation of Urban Rail Vehicles on or adjacent to GB Mainline Infrastructure

This document gives guidance for the introduction and operation of urban rail vehicles on or adjacent to the GB mainline railway. This guidance is…

Application of Probabilistic Gauging Methods

This document sets out requirements for the application of probabilistic gauging based on Monte Carlo methods to calculate clearances between rolling…

​Changes to National Operations Publications for December 2025

This document is primarily used to publish minor changes to National Operations Publications (NOPs) and has been re-issued, taking into consideration…

Interface between Station Platforms, Track, Trains and Buffer Stops​

This document sets out requirements for the design and maintenance of station platforms for their safe interface with trains, track and buffer stops.

​Application of the Accessibility NTSN​

This document contains guidance on the application of the Accessibility (ACC) NTSN, particularly when undertaking work that would not necessarily…

Functionality and Management of Track Circuit Assisters (TCAs) on Rail Vehicles

This document sets out requirements for the functionality, testing and management of failures of TCAs on rail vehicles.

Compatibility Requirements for Track Circuit Assisters (TCAs) on Rail Vehicles

This sets out Great Britain (GB) requirements on where TCAs shall be fitted onto a vehicle and how they shall be set up.

Operation of Heritage Trains​

This document sets out requirements for managing the planning and operation of heritage train services on the GB mainline railway.

Guidance on the Infrastructure National Technical Specification Notice (INF NTSN)​

This document gives guidance on interpreting the requirements of the Infrastructure National Technical Specification Notice (INF NTSN) for application…

Reporting of Safety Related Information

The document sets out requirements for entering information into the Safety Management Intelligence System (SMIS). SMIS has been replaced by the Safe…

Operation of Urban Rail Vehicles on or adjacent to GB Mainline Infrastructure

This document gives guidance for the introduction and operation of urban rail vehicles on or adjacent to the GB mainline railway. This guidance is…

Application of Probabilistic Gauging Methods

This document sets out requirements for the application of probabilistic gauging based on Monte Carlo methods to calculate clearances between rolling…

​Virtual platform edges

This technical note aims to clarify the attributes used for calculating clearances and stepping distances with respect to real and virtual platform…

​Changes to National Operations Publications for December 2025

This document is primarily used to publish minor changes to National Operations Publications (NOPs) and has been re-issued, taking into consideration…

Work on signalling equipment – duties of the signalling technician

You will need this handbook if you carry out the duties of a signalling technician.

Working single and bi-directional lines by pilot

You will need this module if you carry out the duties of a driver, pilot or signaller.

Master Manual

The Rule Book manuals have been produced to provide end-users with access to the content of the Rule Book that is relevant to their roles, e.g.…

Passing a signal at danger or an end of authority (EoA) without a movement authority (MA)

You will need this module if you carry out the duties of a driver, guard, shunter or signaller. You will also need this module if you carry out the…

Dealing with a train accident or train evacuation

You will need this module if you carry out the duties of a driver, guard or signaller.

Additional controls applied to isolation personnel only

This form allows a controller of site safety (COSS) or individual working alone (IWA) carrying out AC traction current isolation duties to receive a…

Work-site certificate

This form is used by the engineering supervisor (ES) to record arrangements for setting up work sites within a possession of a running line.

Duties of the lookout and site warden

This handbook is for those personnel who have duties of the lookout and site warden.

Possession Workers Manual

The Rule Book manuals have been produced to provide end-users with access to the content of the Rule Book that is relevant to their roles, e.g.…

End of Degraded Working

This document provides design details for sign AK215 - End of degraded working.

Directional arrows

This document provides design details for sign AJ10 - Directional arrows.  

Advance lower pantograph (temporary power changeover)

This document provides design details for sign AJ12 - Advance lower pantograph (temporary power changeover).

Lower pantograph (temporary power changeover)

This document provides design details for sign AJ13 - Lower pantograph (temporary power changeover).  

Warning of Traction System Changeover

This document provides design details for sign AJ04 - Warning of traction system changeover.  

Indication of route

This document provides design details for sign AJ11 - Indication of route.

Changeover to Overhead Electric Traction

This document provides design details for sign AJ07 - Changeover to Overhead Electric Traction.

Do not raise pantograph

This document provides design details for sign AJ09 - Do not raise pantograph.  

Changeover to or from self-powered

This document provides design details for sign AJ08 - Changeover to or from self-powered.

Do not raise pantograph (temporary power changeover)

This document provides design details for sign AJ15 – Do not raise pantograph (temporary power changeover).

Code of Practice for OTM Traction

Code of Practice for OTM Driver - Task Analysis

Application Note 5 - Relationship of Yellow Book with European Directives

Application Note 4 - Independent Safety Assessment

Application Note 3 - Human Error: Causes, Consequences and Mitigations

Application Note 2 - Software and EN50128

Application Note 1 - Railway-Level Issues

Engineering Safety Management (The Yellow Book) Fundamentals and Guidance