23 Oct 2025
AS 7711 Signalling Principles
The closing date for comments – Monday 22 December 2025
The AS 7711 Signalling Principles draft is now open for Public Consultation.
How this product helps the rail industry
Supporting the National Transport Commission’s (NTC) work on mandatory standards for ETCS interoperability, this review ensures AS 7711 will enable the implementation of future digital train control systems.
AS 7711 has long been the benchmark for signalling principles, and now is an opportune time to assess whether and how these principles can be applied to new safe working systems, such as ETCS and CBTC.
About
This Standard specifies the principles for railway signalling systems and is applicable to all aspects of the signalling system. Signalling systems comprise of various systems (train control, wayside systems, train-borne systems, etc) including the procedures and technology that form the system of safeworking (including degraded mode working).
This Standard is primarily designed for use with fixed block systems, where the block locations are fixed either physically (e.g. signals) or virtually. Systems using moving block can apply similar principles to those described in this document, however they could require modification.
How to contribute
AS 7711 Signalling Principles will be available for public consultation for 60 days. All interested parties are encouraged to provide comments during this time.
It is available to download here.
To make comments on the draft, please use the commenting tools in Adobe Acrobat or Acrobat Reader to comment in-line with the text. If needed you can find instructions here.
NOTE: There is a recognised fault with some versions of Adobe Acrobat where a message displays ‘This is restricted file – The owner of this file has locked it from receiving comments or other changes.’ This message is incorrect and does not prevent you from adding comments to the PDF and saving the file prior to emailing to RISSB.
Please return your PDF with comments to cfitzhardinge@rissb.com.au by Monday 22 December 2025.
As the rail industry’s accredited Standards Development Organisation (SDO), RISSB continues to collaborate with government, rail operators and industry leaders to improve the efficiency and harmonisation of the Australia and New Zealand’s rail network, ensuring national interoperability, safety and sustainability into the future.