Alstom Deploys Brownfield CBTC on Melbourne Metro: Boosting Capacity

Alstom’s CBTC system powers Melbourne’s Metro Tunnel, marking Australia’s first brownfield railway upgrade. Expect increased service frequency and capacity gains!

Alstom Deploys Brownfield CBTC on Melbourne Metro: Boosting Capacity
December 4, 2025 6:01 pm

Alstom successfully deploys pioneering ‘brownfield’ CBTC system on Melbourne’s Metro Tunnel Project, marking a significant advancement for Australian urban rail. The installation of the Urbalis Flo communications-based train control system on an existing, operational rail line heralds a new era of increased capacity and service frequency for the city’s public transport network.

Key EntityCritical Detail
AlstomInstallation of Urbalis Flo CBTC system
Melbourne Metro Tunnel ProjectFirst brownfield CBTC installation on an operating rail line in Australia
TimelineContract signed in 2017; operations commenced
Key BenefitsIncreased train frequency, reduced dwell times, enhanced operational accuracy

Melbourne’s Metro Tunnel Project has officially commenced operations, featuring the groundbreaking installation of Alstom’s Urbalis Flo communications-based train control (CBTC) system. This marks a historic milestone as the first-ever ‘brownfield’ CBTC deployment on an active rail line in Australia. The integration of this advanced technology alongside existing infrastructure is set to revolutionize Melbourne’s rail network, enabling more frequent train services and significantly boosting weekly passenger capacity by shortening headways between trains.

Strategic Impact and Network Transformation

The Metro Tunnel Project represents the most substantial transformation of Melbourne’s railway system in over four decades, since the introduction of the City Loop. The project’s successful implementation of Alstom’s CBTC technology, coupled with conventional signalling, underpins the expansion of the city’s underground rail network. A key innovation is the deployment of Automatic Train Operation with a driver present, a measure designed to enhance safety and efficiency, complemented by the installation of custom platform screen doors at the five newly opened stations.

Operational Enhancements and Rigorous Testing

Alstom, as a key partner within the Rail Network Alliance, conducted an extensive validation process prior to the line’s opening. This involved over 4,000 hours and 70,000 kilometers of dynamic testing, ensuring the robust performance of the Urbalis Flo system. The CBTC technology is specifically designed to reduce train turnaround times and elevate operational accuracy, improving critical parameters such as train speed management and precise station stopping. The project’s success is a testament to the collaborative effort of Alstom teams from multiple international locations since the contract was awarded in 2017.

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Industry Context and Global Leadership

The bespoke nature of the installed CBTC system, tailored for Melbourne’s unique brownfield operating environment, underscores Alstom’s capability in delivering advanced urban rail solutions. This project positions Melbourne alongside Sydney as one of the two Australian cities now equipped with CBTC technology on their rail systems. Alstom’s continued commitment to the Australian market is further demonstrated by its role in delivering high-capacity signalling for Perth. With its Urbalis CBTC system operating on over 190 metro lines across 32 countries, including 74 fully automated and driverless lines, Alstom solidifies its position as the preeminent provider of urban CBTC technology in Australia and globally.