About Us
What is EULYNX?
EULYNX is an initiative of railway infrastructure managers, established in 2014, dedicated to the standardisation of railway signalling system interfaces and architectures.
Our mission is to enable modular and interoperable signalling systems, allowing Infrastructure Managers to integrate components from different suppliers while reducing dependence on proprietary solutions. By decoupling the lifecycles of interlocking systems and field elements, EULYNX supports greater flexibility, more efficient modernisation and digitalisation, and a substantial reduction in signalling system lifecycle costs.
Members
EULYNX brings together leading railway Infrastructure Managers from Europe and beyond in a consortium dedicated to advancing the standardisation and modernisation of railway signalling systems.
- Administrador de Infraestructuras Ferroviarias (Adif), Spain
- Bane NOR, Norway
- Centralny Port Komunikacyjny (CPK), Poland
- DB InfraGO (DB), Germany
- HŽ Infrastruktura (HŽ), Croatia
- Indian Railways (RDSO), India*
- Infrabel, Belgium
- Network Rail, United Kingdom
- ÖBB Infrastruktur, Austria
- PKP Polskie Linie Kolejowe S.A. (PLK), Poland
- ProRail, Netherlands
- Rete Ferroviaria Italiana (RFI), Italy
- Saudi Arabia Railways (SAR), Saudi Arabia*
- Schweizerische Bundesbahnen (SBB), Switzerland
- Société Nationale des Chemins de Fer Français (SNCF), France
- Société Nationale des Chemins de Fer Luxembourgeois (CFL), Luxembourg
- Správa železnic, Czech Republic
- SŽ-Infrastruktura (SŽ), Slovenia
- Trafikverket, Sweden
- Väylävirasto (FTIA), Finland
In addition to the full membership, EULYNX also offers associate membership (*) schemes.
Activities
EULYNX works on a range of activities to support the development and modernisation of railway signalling systems. Our main activities include:
EULYNX Architecture: The EULYNX Reference Architecture defines the comprehensive EULYNX system. It covers the overall architecture, cross-cutting architectural concepts, and generic functions of the system.
Interfaces: EULYNX develops standardised interfaces between railway signalling system components, enabling interoperability between equipment from different suppliers. These include Standard Communication Interfaces (SCI), as well as interfaces for diagnostics (SDI), maintenance (SMI) and security (SSI). Each interface is defined through a set of requirements and technical specifications.
Assurance: EULYNX assures specifications that are accepted by all member organisations. Our process follows CSM principles and ensures hazard identification and mitigation. Each baseline release is accompanied by an Assurance Justification report.
Modelling: EULYNX uses model-based systems engineering (MBSE) methods to develop clear, consistent and structured specifications, improving their quality and supporting efficient development, validation and implementation.
Conformance: EULYNX develops testing procedures and test cases to verify that signalling components comply with its specifications. These support consistent and transparent testing by both independent laboratories and suppliers. A test case catalogue is provided with each specification baseline.
Security: EULYNX develops a common security architecture and provides guidelines and best practices to support secure communication and integration of railway signalling systems.
Migration: Our migration strategy involves defined plateaus, ensuring backward and forward compatibility. We aim to protect investments in trackside assets and facilitate standardisation.
Deployment Support: EULYNX supports infrastructure managers in adopting and implementing its specifications through a dedicated programme offering training, technical guidance and assistance with preparing EULYNX-based tenders.
Training: The EULYNX Academy offers training courses to help railway professionals understand EULYNX specifications and their practical application. Through introductory and in-depth sessions, participants gain the knowledge needed to support the adoption and implementation of EULYNX-based solutions.
Integration with Europe’s Rail System Pillar
EULYNX is committed to guiding developments in the CCS sector towards cost-effectiveness, increased modularisation, and faster deployment. We actively collaborate with Europe’s Rail System Pillar, the generic system integrator and the architect of the future European Union’s railway system, which brings the sector initiatives such as EULYNX under a single coordination body.
Collaboration with the ERTMS Users Group
EULYNX works closely with the ERTMS Users Group to support a common approach to the development and deployment of interoperable railway signalling systems. By combining expertise in standardised interfaces, system architecture and ERTMS deployment, the two organisations coordinate their work on specifications, share deployment experience and contribute to a common European CCS strategy.