Digital interlocking represents a significant advancement in railway infrastructure by transitioning from traditional, centralized control systems to decentralized, Ethernet-based networks.
Networking solutions from Westermo combine traditional safety-oriented railway systems with modern network security solutions.
Digital interlocking is pivotal in modernizing railway infrastructure by enhancing network flexibility, reliability, diagnostic capabilities, and security, while also reducing costs through standardization.
Digital interlocking allows for much larger networks without the 6.5 km limitation of traditional systems.
Standardization reduces lifecycle costs and ensures interoperability between different suppliers.
The digital approach aims to enhance performance, reliability, and punctuality of railway operations.
Power supply for field elements is managed in a decentralized way, improving efficiency.
This application drawing illustrates a digital interlocking system and its connectivity to the management system and data center services. All connections are redundant, and Ethernet connections allow for unlimited distances. Power supply for local hardware is decentralized, eliminating the need for central peak power supplies.
The connections between network components are encrypted. Safety calculations are performed in the data center, not on-site, which is a significant shift from traditional signalling. Due to its digital connection to the data center, the control room can be located anywhere in the world.
Ideal for trackside backbone networks with encrypted fibre connectivity. Suitable for use in heavy industrial environments such as railway trackside installations.
Our range of managed switches far exceeds normal industrial requirements, with rugged designs to withstand extreme temperatures and electromagnetic interference.
As the railway industry embraces digitalisation, Ethernet connectivity is extended to the very edge of the network. While this evolution enhances operational capabilities, it also introduces new cybersecurity risks. It’s essential to distinguish between two critical concepts: safety, which protects against unintentional accidents, and security, which defends against intentional threats.
Westermo believes these layers must remain distinct yet complementary. The safety layer ensures reliable, unaltered data transmission—vital for protecting lives. Above it sits the security layer, which is dynamic and frequently updated to counter evolving threats. This layered approach allows for continuous security improvements without disrupting certified safety functions or requiring new safety approvals.
To support this architecture, Westermo has implemented a robust patch management process. Through our dedicated service portal, we streamline vulnerability detection, firmware validation, and secure deployment. Updates are rigorously tested in homologated environments before being rolled out to operational systems, ensuring both safety and security remain uncompromised.
Redundant Ethernet network from Westermo supports Hitachi Rail Falling Object Detection system.
Reliable and robust data network technology from Westermo supporting the operation brand-new cogwheel trains.
Frauscher team members completed the Certified Engineer WeOS program empowering over 30 employees
Frauscher US transformed their team’s capabilities with Westermo Academy to better serve their own customers
Sami Anttila
Global Market Director, Trackside
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