AFTER more than a century of grappling with physical breaks of gauge and different safety systems and technical standards, Australia is on the cusp of the most significant transformation of its rail network.
Last year the Australian government agreed to make ETCS mandatory for all future digital signalling and control systems on the National Network for Interoperability (NNI). Federal minister for infrastructure, transport, regional development and local government, Catherine King, together with state infrastructure and transport ministers, also agreed that a new Australian Rail Industry Standards Organisation (ARISO), originally known as the Rail Industry Safety and Standards Board, will become the body responsible for setting technical standards.
The adoption of ETCS will remove inconsistencies between jurisdictions, enabling seamless rail operations across state borders. Interoperability is expected to improve safety, optimise performance, and encourage further investment in the rail sector.
“The decision ends decades of inconsistency on the national network, which has made it harder for rail operators to move trains across the country,” observes Caroline Wilkie, CEO of the Australasian Railway Association (ARA).
As Wilkie points out, there are currently nine separate infrastructure managers in Australia, all currently working in relative isolation. With digital signalling on the horizon, it became clear that Australia was heading towards a digital break of gauge, a situation where signalling and train control systems could be technically incompatible across networks, undermining safety, efficiency, and interoperability.
Recognising this, politicians opted not to let the market evolve organically. Instead, they decided on a deliberate policy of requiring infrastructure managers to ensure that any digital train control system deployed on the national network is ETCS-compliant.
They were undoubtedly aware of the fact that Australia has attempted to develop its own digital signalling system, the Advanced Train Management System (ATMS). Designed by Lockheed Martin for national infrastructure manager Australian Rail Track Corporation (ARTC), ATMS was launched over 20 years ago, but was unable to meet its original objective of nationwide deployment due to a range of factors including technical difficulties and rising costs.
ARTC, which manages much of the country’s inter-state freight network, had been reluctant to give up on a system that was tailored to its long, relatively uncongested corridors, when for many years there were legitimate doubts about whether alternatives such as ETCS could be cost-effective in remote, low-density environments.
ETCS preferred
With ATMS not progressing as planned, there were in theory a number of options to pursue. A wide variety of digital signalling technology is available globally, yet several factors converged to make ETCS the preferred solution. One was the decision by state public transport authority Transport for New South Wales (TfNSW) to take on the role of first adopter, announcing plans to roll out ETCS on the Sydney Trains commuter network. Although initial deployment is on sections of the network used only by commuter trains, the medium-term plan is full network digitisation, including lines with a mixture of passenger and freight traffic corridors. That immediately raised a fundamental question: how to ensure freight locomotives operating on the national network could be compatible with Sydney’s system?
Another factor was that advances in ETCS technology had made it a much more cost-effective solution. It is now being rolled out across a wide variety of networks worldwide and is increasingly seen as the global standard outside North America.
“The lack of a technical solution for seamless interworking helped tip the strategic balance decisively in favour of a single ETCS pathway.”
Carolyn Walsh, CEO, National Transport Commission (NTC)
The coalescence of these factors brought two major advantages for Australia: access to a mature, competitive global supply chain, rather than bespoke, locally developed technology, and confidence that ETCS can be configured for both dense urban networks and remote regional lines.
Crucially, according to National Transport Commission (NTC) CEO, Carolyn Walsh, “attempts to engineer interoperability between ATMS and Sydney’s ETCS proved unpromising.
“The lack of a technical solution for seamless interworking helped tip the strategic balance decisively in favour of a single ETCS pathway,” she says.
Mandating ETCS is only the start of the journey. As experience in Europe has already shown, simply choosing a common standard does not prevent fragmentation through bespoke implementation.
Walsh is frank on this point: Australia must avoid a scenario where each infrastructure manager fine-tunes ETCS to its own preferences and to the point where interoperability is compromised. “That demands robust governance, assurance and standard-setting mechanisms,” she says.
Over the next 12 months, NTC will focus on developing a national safety assurance framework for ETCS deployment, establishing mechanisms to verify that new projects are interoperable and ETCS-compliant, while clarifying roles and responsibilities across key institutions.
Two bodies are central to this new regime: ARISO, which is reforming its governance structure to act as the national standard-setting body, producing harmonised technical standards; and the Office of the National Rail Safety Regulator (ONRSR), which will gain powers under amended rail safety legislation to require infrastructure operators forming part of the national network to develop interoperability management plans.
In parallel, NTC has tendered for a consultancy contract to review the European Union (EU) Technical Specifications for Interoperability (TSI) and determine how they can be adapted for the Australian context. Walsh reports that industry feedback has strongly favoured maximum alignment with European standards, rather than reinventing the wheel.
One of the striking aspects of the decision to adopt ETCS is what it does not do. “It does not force jurisdictions to go digital on a fixed timetable, the mandate is not retrospective, and it does not require existing lineside signalling to be removed,” Walsh says.
Instead, the new strategy sets a clear technological pathway. The pace of rollout will depend on business cases, capacity constraints, and funding decisions. This will likely result in patchwork progression, with ETCS deployed first on key sections of the network, such as the busy mixed-traffic lines on Australia’s East Coast and lines serving major ports and state capitals, while many lines in the interior retain their conventional signalling equipment for many years.
So far, the response from the market to the phased adoption of ETCS has been broadly positive. “When it comes to mixed-traffic networks, in particular, ETCS Level 2 is certainly the right decision,” says Mick Spiers, director of operations, Australia and New Zealand, at Siemens Mobility.
But it remains to be seen who will pick up the bill for introducing the new technology as the economics are complex. Digital systems promise capacity, safety and reliability improvements, and a significant reduction in maintenance and capital costs over time, especially once lineside signals can be removed. However, the distribution of costs and benefits is asymmetric: infrastructure managers gain from lower maintenance costs, deferred capital expenditure and better asset utilisation but operators (both freight and passenger) see fewer benefits, especially if they are required to pick up the cost of retrofitting onboard ETCS equipment to their existing fleets.
Addressing this imbalance is, “the next major strategic task,” according to Walsh. A national strategy for rolling stock fitment must resolve several issues:
- prioritising which rolling stock and corridors are fitted first, aligned with the staged network rollout
- ensuring operators have sufficient spare fleet capacity while vehicles are out of service for retrofitting
- setting future-proof expectations, for example by discouraging the purchase of new locomotives that are not ETCS-ready after a certain date, and
- designing funding and incentive mechanisms so that infrastructure managers (and governments) can help offset the cost burden on operators.
The Australian government is clearly expected to play a role, but Walsh anticipates a “federal negotiation” involving both national and state governments, reflecting the shared interest in the national network and in shifting more freight from road to rail.
“I think the issue of funding is going to be less of a problem now that we’ve got a proven deployment to reference, such as the Central Queensland Coal Network (see panel below) and everyone can see how well it works,” Spiers says.
National operating culture
Beyond technology and funding, ETCS is providing a catalyst to tackle one of Australian’s more intractable structural issues that has bedevilled the rail sector: fragmented training, competencies and operating rules.
A driver or signaller often has to be retrained almost from scratch when moving between networks. This fragmentation adds costs, constrains labour mobility, and increases the risk of human factors compromising safety as staff adapt to varying rules and procedures.
Walsh sees ETCS as a golden opportunity to do things differently. “Rather than letting each jurisdiction develop its own digital training programmes, policymakers are aiming to create a nationally-consistent ETCS curriculum and competency framework from the outset,” she says.
That, in turn, is driving parallel work on harmonised operating rules and procedures, national standards for signalling and rolling stock equipment, and more efficient and consistent competency management across the country. If successful, Walsh reckons the payoff will be significant: a safer, more reliable railway with a more flexible workforce and a more efficient domestic supply chain. The rail sector has been generally positive about the creation of a nationwide competency framework, though expectations are for a protracted rollout.
“I think the issue of funding is going to be less of a problem now that we’ve got a proven deployment to reference.”
Carolyn Walsh
Since February, amendments to Australia’s Rail Safety National Law regulations require networks to consider national interoperability when planning changes to their railway operations. If interoperability issues are identified, an Interoperability Management Plan must be developed and applied.
Walsh is clear that ETCS is not an end in itself. She frames the decision to mandate ETCS as a necessary requirement for meeting broader policy objectives: growing freight on rail to meet future demand while delivering safety and environmental benefits by increasing rail’s modal share.
With a unified digital standard in place, Walsh believes politicians can now turn more squarely to resolve issues such as which corridors should be prioritised to unlock freight capacity, how investment in digital systems can best support national productivity and decarbonisation objectives, and what policy levers, from track access pricing to infrastructure funding, will accelerate uptake.
In Europe, these discussions have led to corridor-based ETCS deployment deadlines. Australia is almost certainly not yet ready to emulate that level of prescription, but Walsh suggests that a national investment pathway for digital systems is the logical next step.
Australia’s rail sector appears to be entering a strategic realignment phase, with ETCS at its core. Those who position themselves early behind interoperability, national standards and digital capability are likely to be best placed to take advantage as the country’s rail network is progressively upgraded for the digital age.
Case study: Central Queensland Coal Network
NEARLY seven years have passed since work started on the project to install ETCS Level 2 on national freight operator Aurizon’s Central Queensland Coal Network (CQCN) and it is now virtually complete. The 2670km CQCN connects mines to five export terminals, with many of the lines electrified at 25kV ac.
Siemens was awarded the contract to implement ETCS Level 2 on over 2000km of electrified track on the Goonyella and Blackwater sub-networks, also involving the installation of onboard equipment on 105 electric locomotives.
The digital signalling system is now in regular operation and the project is entering the final stages of practical completion, reliability proving and defect liability. Deployment has delivered safety benefits by design, preventing signals from being passed at danger and overspeed events.
Engineering the system for an intensively-used network posed significant challenges, including harsh environmental conditions. The project also required a rethink of the original radio block centre (RBC) architecture so that signalling boundaries aligned with Aurizon’s operational needs, such as selectively shutting down parts of the network while keeping others running.
“The 24/7 operation of the network meant we had to think very carefully about the implementation of the new system,” says Mick Spiers, director of operations, Australia and New Zealand, at Siemens Mobility. “Most ETCS deployments so far are on passenger networks that include shutdown periods, often overnight, giving maintenance teams ready access to infrastructure. For CQCN we realised that we would have to be incredibly disciplined in planning for both the commissioning phase and then for maintenance once ETCS was operational.”
It wasn’t only Siemens that needed to adapt to a change in circumstances. Because the rollout took place in five phases, Spiers says Siemens and Aurizon adopted a “problem‑solving, no‑compromise-on-safety approach, tackling technical issues one by one and progressively refining the design.”
Aurizon’s project is widely seen as a benchmark deployment of ETCS Level 2 in Australia, providing a heavy‑haul reference that has helped underpin the National Transport Commission’s (NTC) move to standardise on ETCS Level 2 for the country’s mixed‑traffic network.
