At the Infrastructure and Transport Ministers' Meetings (ITMM) on 11 August 2025 arguably the largest changes to rail networks nationally were made.
It was agreed at the ITMM that:
- the European Train Control Systems (ETCS) will be the future technology pathway for National Network for Interoperability (NNI);
- any future digital train control and signalling system introduced on the NNI is to comply with ETCS mandatory standards;
- a new Rail Industry Safety and Standards Board (RISSB) will become the industry led technical standards setting body; and
- the ITMM:
- endorses a national approach to the procurement of passenger rolling stock; and
- will consider a package of reform options to implement elements of the National Rail Procurement and Management Strategy, including nationally harmonised standards for manufacturing rolling stock.
Interoperability challenges have been flagged by the National Cabinet as a priority issue and the NTC’s recent discussion paper on the topic highlights the importance of interoperable digital systems as Australian rail networks move away from manual signalling.
Most rail freight trips in Australia do not occur on a single network but traverse several (see NNI networks in figure 1). It follows that the decision poses broad implications and opportunities for rail operators, rolling stock operators and Rail Infrastructure Managers (RIMs) concerning procurement, the servicing of existing contracts, signalling accreditation, integration with existing systems, transitional arrangements, and regulatory compliance.
The NTC have indicated that in respect of technical alignment, ‘in addition to the technical interfaces between systems, agreements and operating procedures will need to be established between RIMs.’
Figure 1 NNI (courtesy of Interoperability Map)
RIMs, rail operators, rolling stock operators, and industry stakeholders should be conscious of the challenges and opportunities which come with significant modernisation of our signalling systems and accompanying standards.
Please contact Larissa Buriak and Chris Mitchell for assistance or guidance.

