CAF SIGNALLING - Railway Technology
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Rail Traffic Signalling Systems and Solutions

CAF SIGNALLING, the technological subsidiary of the CAF group, provides rail traffic signalling and control systems. As such, CAF Signalling offers a wide range of signalling solutions for high-speed, conventional, suburban, light rail and metro systems around the world.

C/ Sepúlveda nº 7-B,
28108 Alcobendas,

CAF SIGNALLING, the technological subsidiary of the CAF group, provides rail traffic signalling and control systems. As such, CAF Signalling offers a wide range of signalling solutions for high-speed, conventional, suburban, light rail and metro systems around the world.

Turnkey railway signalling projects

The company has in-house engineering and expertise to undertake turnkey railway signalling projects. It has recognition from several railway administrations in Europe, America, Africa, Middle East and Asia.

CAF SIGNALLING’s customers include:

  • ADIF (Spain)
  • RENFE (Spain)
  • ONCF (Morocco)
  • ENR (Egypt)
  • ANTALYA Municipality (Turkey)
  • TCDD (Turkey)
  • EFE (Chile)
  • MERVAL Valparaíso Metro (Chile)
  • DMRC New Delhi Metro (India)
  • NRIC (Bulgaria)
  • SECOPA (Brasil)
  • SCT (Mexico)
  • KMRT (Taiwan)

Advanced signalling technology: NAOS, AURIGA and QUASAR

The company provides comprehensive solutions for railway signalling both at infrastructure level and on-board.

The range of rail signalling developed by CAF Signalling has three major product lines:

  • AURIGA family: ERTMS Level 1, Level 2 and both combined
  • QUASAR family: electronic interlocking
  • NAOS family: integrated control centres

The highest quality product and service standards

CAF SIGNALLING combines advanced products with its own technology for comprehensive signalling solutions. It relies on growing efforts in research, development and innovation (RDI), particularly in the area of safety-critical systems. To this end, it boasts a young, competent and dynamic team committed to the company’s objectives and customers.

CAF SIGNALLING operates a certified integrated quality management system. This provides public recognition of the commitment it has towards the highest quality standards in its products and services.

Research, development and innovation for signalling systems

The company dedicates considerable resources to RDI. Its objective is to have a product portfolio with competitive, tailor-made solutions that meet customer requirements.

One of the key factors for the successful implementation and results of CAF SIGNALLING’s RDI is its proven capacity to understand customer requirements and to maintain a high level of collaboration with the teams responsible for other areas, including commercial, project execution, manufacture and technical support.

The company continuously strengthens the knowledge and technical skills of its team. It promotes an RDI structure based on creative teamwork, cooperation and group leadership to meet the business objectives tied to its products. It is particularly focused on the manufacture of competitive products, and meeting customer expectations.

Safety, reliability, availability and maintainability of signalling systems

CAF SIGNALLING’s RDI teams use suitable methodologies in order to achieve demanding attributes such as safety, reliability, availability and maintainability as required by the critical systems in which its products are applied.

Each new product presents a different challenge and the company is well-known for its competency. CAF SIGNALLING is well aware of the need for continuous improvement, and there are annual improvement plans in all RDI areas.

Auriga Family

CAF Signalling incorporates leading-edge technology to deliver a complete ERTMS solution that, together with QUASAR S4e Interlocking and NAOS Intergrated Control Centres, answers all needs for ERTMS level 1, ERTMS level 2 and mixed ERTMS levels.

NAOS Family

NAOS is the solution offered by CAF Signalling for multifuction, Intergrated Operations Control centres for signalling systems.

Quasar Family

The QUASAR S4e line of electronic interlockings forms the basis of CAF Signialling solutions.

Driving the Future of Signalling

CAF Signalling boosts its in-house engineering and expertise to undertake 'turnkey' railway signalling projects with recognition from administrations over Europe, America, Africa, the Middle East and Asia.

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C/ Sepúlveda nº 7-B

28108 Alcobendas




Plaza Majori nº 7


20240 Ordizia



CAF Sinyalizasyon

Kasap Sokal Eser Is Merkezi

C. Blok D. 60

34394 Esentepe