What EULYNX does

EULYNX is a European consortium of railway Infrastructure Managers founded around 2014-2015 and registered as a European Economic Interest Grouping (EEIG) in Brussels, Belgium. Its functional purpose is to standardise the architecture and interfaces of railway signalling systems in order to reduce lifecycle costs, eliminate vendor lock-in, and accelerate ERTMS adoption. Members include national rail infrastructure managers such as ProRail, Network Rail, DB Netz AG, Bane NOR, Správa železnic, and HŽ-Infrastruktura, with Saudi Arabia Railways and Indian Railways joining as the first non-European members.

The core technology is a standardised reference architecture for signalling systems, developed using SysML-based Model-Based Systems Engineering (MBSE). EULYNX publishes a suite of Standardised Command and Control Interfaces (SCI) — SCI-ILS for Interlocking, SCI-CC for Control Centre, SCI-TDS for Train Detection, SCI-RBC for Radio Block Centre, SCI-P for Point, SCI-LC for Level Crossing, and others — underpinned by the RaSTA safety protocol. Baseline Set 4 Release 4 comprises 25 joint specifications with the EU-Rail System Pillar plus 24 EULYNX-specific specifications, distributed under EUPL license, accompanied by simulators, machine-readable JSON test cases, and a Test Case Management Database. The first operational EULYNX-compliant system — Bane NOR's ERTMS Level 2 signalling on the 67 km Gjøvik Line — went live in October 2024.

EULYNX is not a venture-backed software vendor but a member-funded consortium. Revenue mechanics derive primarily from membership contributions from Infrastructure Managers, supplemented by training revenue through the EULYNX Academy (online, Brussels/Prague/Vienna onsite, and tailored workshops) and compliance testing services via the Relesoft platform. The go-to-market is relationship-led and standards-led: specifications are gated behind registration, adoption is propagated through workshops in member countries, and the VendorExpo digital catalogue showcases 27+ compliant products from nine suppliers to facilitate multi-vendor procurement.

Name

EULYNX

Legal name

EULYNX Consortium (at EEIG ERTMS Users Group)

Website

https://eulynx.eu

Company type

Private

Founded year

2015

Operating status

Operating

Headcount range

51–100 employees

Short description

EULYNX is a European consortium of railway Infrastructure Managers that standardises signalling system architecture and interfaces (SCI-ILS, SCI-CC, SCI-TDS, etc.) to reduce lifecycle costs and enable multi-vendor procurement. It serves national rail operators across Europe and selected markets in the Middle East and Asia.

Ownership category

akta.pro rank

Product category

Railway Signalling Standards & Interface Specifications

NAICS

Engineering Services (541330), Management, Scientific, and Technical Consulting Services (5416)

SIC

Services-Engineering Services (8711), Measuring & Controlling Devices, Nec (3829)

akta.pro primary industry

Rail Signaling & Train Control Infrastructure (Interlockings, ETCS/CBTC Wayside) (TLAJADAB)

akta.pro secondary industries

Testing, Inspection, Certification & Commissioning (TICx) Technical Services (BPAHAIAL), Transit Systems Integration & Commissioning (Rail Infrastructure) (IMAFAFAJ)

Keywords

• Railway signalling standards
• Signalling interface specification
• ERTMS interoperability
• Modular signalling architecture
• Railway systems engineering

Headquarters

HQ city

Frankfurt

HQ country

Germany

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Software

Cost components

Personnel, Technology or R&D, Operations, Others

Distribution channels3 records

Marketing channels7 records

Core offering

EULYNX is a consortium of railway Infrastructure Managers that develops and maintains the EULYNX Reference Architecture — a set of standardised interfaces and specifications for railway signalling subsystems (interlocking, control centre, train detection, radio block centre, point, level crossing, etc.). It also publishes Baseline Set specifications, simulators, certification test cases, the Data Preparation Model, and runs the EULYNX Academy training programme, enabling multi-vendor procurement and reducing signalling lifecycle costs.

Differentiator

Problem solved

Functional benefit

Brands

• EULYNX Academy: A comprehensive training platform providing structured courses for different levels of understanding in railway signalling, including Introduction, Basic, and Deep Dive modules
• VendorExpo

Products and services

• EULYNX Baseline Set 4 Specifications (incl. Release 4) Standardised specification documents (PDF, ReqIF, SysML model exports) covering trackside assets and transversal signalling functions for both current EULYNX architecture and future EU-Rail System Pillar target architecture. Made available to members and registered users of the EULYNX documentation platform.
• EULYNX Academy Training Programme Structured training courses delivering deep understanding of EULYNX signalling systems, document structures and subsystem functionality for infrastructure managers and suppliers.
• Certification Test Cases and Test Case Management Database (TCMD) Machine-readable certification test cases (JSON) and hosted Test Case Management Database used by suppliers to verify and validate EULYNX compliance of signalling subsystems.
• VendorExpo Digital Catalogue Online exhibition space where suppliers present their EULYNX-compliant products, enabling infrastructure managers to identify and source compliant solutions.
• EULYNX Field Element Subsystem Simulators Simulators for EULYNX field element subsystems provided to suppliers and infrastructure managers to support verification and validation of compliant signalling products.

Quantifiable outcome

• Bane NOR achieved first EULYNX-compliant ERTMS Level 2 deployment on 67 km Gjøvik Line
• +2 more outcomes

Named customers4 records

Segments1 record

Ideal customer profiles2 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature8 records

Partnerships

Nine partnerships are on record, tiered core and flagship.

• Indian Railways (Ministry of Railways / RDSO)coreStrategic or Co-development Partner · 6 June 2025Indian Railways joined as Associate Member, formalised between Ministry of Railways through Research Designs and Standards Organisation (RDSO) and EULYNX. Participation in selected EULYNX working groups and technical discussions to develop harmonised signalling interface specifications and modernise Indian Railways signalling systems.
• Bane NORflagshipStrategic or Co-development Partner · 27 October 2024First operational EULYNX-compliant ERTMS Level 2 signalling system deployment on the 67 km Gjøvik Line. Bane NOR's system combines centralised computer facility for interlocking, RBC, and TMS with decentralised object controller level. System operational since October 2024, demonstrating EULYNX viability at scale.
• SiemenscoreStrategic or Co-development Partner · 27 October 2024Delivered ERTMS Trackside for Bane NOR's Gjøvik Line deployment, providing EULYNX-compliant object controllers including SCI/SDI-P, SCI/SDI-IO, SCI/SDI-TDS, SCI/SDI-LS, SCI-CC, SCI-RBC, and SCI-ILS interfaces.
• AlstomcoreStrategic or Co-development Partner · 27 October 2024Provided ERTMS Onboards for Bane NOR's Gjøvik Line, contributing to the first operational EULYNX-compliant system.
• HitachicoreStrategic or Co-development Partner · 27 October 2024Provided Traffic Management System for Bane NOR's Gjøvik Line, communicating with the signalling system over the EULYNX SCI-CC interface. Also participates in Target190+ Generic Interface demonstration with Network Rail.
• Network RailcoreStrategic or Co-development Partner · 25 October 2024Target 190plus programme using EULYNX for Generic Interface and Boundaries project in Great Britain railway. Developed information package on EULYNX benefits and opportunities. Hosted SCI-TDS interface demonstration with Hitachi, Thales, and Frauscher.
• Saudi Arabia RailwayscoreStrategic or Co-development Partner · 26 September 2024First non-European member of EULYNX consortium (16th member). Aims to enhance rail network by gaining access to expert knowledge in global signalling systems, participating in technical discussions, and developing signalling standards tailored to specific operational needs while ensuring alignment with global protocols.
• RelesoftcoreTechnology or Integration · 26 August 2024Multi-year contract for compliance testing platform and related services. Relesoft, a railway software company specialising in safety-related system development, provides a state-of-the-art turnkey solution for EULYNX compliance testing. The platform operates as official EULYNX test case database. Testing services began with point object controllers (SCI-P) in October 2024 and expanded to cover all field element subsystems by Q1 2025.
• EU-Rail System PillarcoreStrategic or Co-development Partner · 26 June 2024Joint publication of EULYNX Baseline Set 4 Release 4 and subsequent releases. All specifications related to trackside assets and transversal functions are jointly published under EU-Rail System Pillar authority. This collaboration integrates EULYNX development under the System Pillar's technical authority, aligning current EULYNX architecture with future EU-Rail target architecture for Single European Railway Area (SERA).

Scale indicators5 records

Recent moves6 records

Expansion highlights5 records

Others

• UNIFE (European Rail Supply Industry Association): Represents European rail supply companies including EULYNX partner vendors (Siemens, Alstom, Hitachi, Thales). Acts as the supplier-side counterpart to EULYNX's Infrastructure Manager focus, with some overlap on standardisation initiatives through working groups like UNITEL.
• ERA (European Union Agency for Railways): EU regulatory agency that authorises rail vehicles and infrastructure, and issues technical specifications for interoperability (TSIs) that EULYNX specifications must align with. Functions as a regulatory enabler/constraint on EULYNX deployment rather than a direct competitor.

Direct peers

• EEIG ERTMS Users Group: Hosts EULYNX Consortium at the same Brussels office (Rue Froissart 123-133). Coordinates ERTMS deployment across European Infrastructure Managers and works alongside EULYNX on the broader signalling and train control ecosystem.
• Europe's Rail Joint Undertaking (EU-Rail JU): The EU's rail research and innovation partnership that co-publishes EULYNX specifications through the System Pillar. Functions as a parallel consortium driving rail R&D, with overlapping membership from EULYNX's Infrastructure Managers and direct alignment on signalling standardisation.
• UIC (International Union of Railways): Global railway standards organisation representing 200+ members across 5 continents. Develops international railway specifications and interoperability standards, operating a similar consortium-of-infrastructure-managers model to EULYNX but at a global scale across freight, passenger, and technical domains.

Regional players

• AAR (Association of American Railroads): North American rail industry association that develops interoperability standards for US freight and passenger rail. Operates a similar consortium-of-railroads model to EULYNX but focused on PTC (Positive Train Control) and North American rail requirements rather than ERTMS-based European signalling.

Broad incumbents

• Alstom: Global rail signalling and rolling stock incumbent that delivered ERTMS Onboards for Bane NOR's first EULYNX-compliant system. Provides proprietary Atlas and Smartlock interlocking solutions that compete with EULYNX's open-interface model, while simultaneously adopting EULYNX-compliant products.
• Hitachi Rail: Delivered Traffic Management System for Bane NOR's first EULYNX-compliant deployment and participates in Network Rail's Target190+ programme. Provides broader rail signalling, rolling stock, and digital solutions that intersect with EULYNX's standardised interfaces.
• Thales: Major rail signalling vendor collaborating on Network Rail's Target190+ SCI-TDS interface demonstration. Provides proprietary interlocking and train protection systems that compete with EULYNX-compliant alternatives while also participating in standards-based implementations.
• Siemens Mobility: Major rail signalling vendor that delivered the first EULYNX-compliant ERTMS Trackside system at Bane NOR. Operates as both a partner (implementing EULYNX interfaces) and a broad incumbent whose proprietary signalling heritage competes with open-standard architectures at the product level.

Market position

Strengths5 records

Weaknesses3 records

Competitive moat5 records

Key risks3 records

Key highlights7 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about EULYNX