Railway Signals in the evening

Railway Signalling Services

Put safety at the heart of your railway operations

Put safety at the heart of your railway operations

What are rail signalling services?

Rail signalling services help operators, railway project managers and manufacturers to ensure that their crucial rail signalling equipment functions safely and reliably. The complex interdependencies of signalling and telecommunications and other safety critical equipment and systems in the rail sector pose real challenges for operators and manufacturers. It is essential to ensure that safety, performance, quality and interoperability objectives are met as cost-efficiently as possible. Rail signalling services help you by ensuring that your plans, engineering and signalling systems are working safely and reliable.

Why are rail signalling services like ETCS/ERTMS testing important?

Conducting validation, testing, assessment and certification services on your rail signalling projects and equipment provides several benefits:

  • Ensure that safety, performance, quality and interoperability objectives are met
  • Achieve maximum safety and quality as cost-efficiently as possible
  • Successfully migrate to the European Train Control System (ERTMS/ETCS), a globally uniform train control and protection system, which is set to replace the existing safety systems in Europe
  • Ensure that all new requirements for existing signalling systems are fulfilled, e.g. digital interlocking systems

TÜV SÜD is your experienced partner for rail signalling services

TÜV SÜD supports rail manufacturers and operators at every stage of their product life cycle: from risk analyses to the development, planning to realisation of control systems and signalling technology, telecommunications, and Power Scada. At the same time, we cover all areas of rail signalling (e. g. interlocking systems, CBTC systems, human-machine interface systems, axle counting systems, ATP systems) and all train types (high-speed, conventional, tramways, light rail systems, metros [BOStrab]). Our expertise focuses on validation, independent safety assessment, certification and training. We cover all state-of-the-art technologies that are used in signalling systems for rail infrastructure, from relay-driven systems to fully software-controlled systems (microcomputer, FPGA) and standard industrial programmable logic controllers (PLC).


By taking advantage of our support services to manage the complex requirements for the validation and assessment of signalling systems and technologies, you ensure and document that your systems efficiently comply with safety requirements. Our experts support you in the best way possible, always with the objective to achieve maximum safety of your products at minimum costs and with our global expert network we are able to support you worldwide.

TÜV SÜD’s rail signalling services

We provide practical solutions to ensure your signalling project meets all safety, performance, quality and interoperability objectives:

As an Independent Safety Assessor (ISA), TÜV SÜD provides:

o Evaluation of generic products, generic applications and specific applications according to CSM as an independent Assessment Body (AsBo)

o Evaluation of generic products, generic applications and specific applications according to the CENELEC standards (EN 50126, EN 50128, EN 50129, etc.) as Independent Safety Assessor (ISA)

o Independent quality and safety audits

o Plan checking and acceptance testing as well as on the inspection of functional and technical safety for rail signaling systems

o Certification with TÜV SÜD-Mark, e. g. according to CENELEC standards (EN 50126, EN 50128, EN 50129, etc.)

  • Technical Support

o Validation of generic products and applications as well as specific applications at software and system level


o Conformity assessments and certification of interoperability constituents and EC verifications of the control-command and signalling (CCS) on-board and trackside subsystems according to EU Directives as

  • Notified Body (NoBo) via TÜV SÜD Nederland B.V.
  • Associated partner with EISENBAHN-CERT (EBC)

o Conformity assessment and certification of components and subsystems according to National Notified Technical Rules (NNTR) in the role of the Designated Body (DeBo) for the following countries:

  • Germany
  • Austria (via partner)
  • Switzerland
  • Luxembourg
  • Italy
  • Poland (via partner)
  • Denmark
  • Norway
  • The Netherlands
  • Finland

o Our experienced specialists conduct training for a range of signalling and safety systems (e. g. basics of rail signalling, CENELEC Standards)


The Future of Rail Automation

The Future of Rail Automation

Smart mobility - facing the challenge

Learn more

The new era of rail innovation

The New Era of Rail Innovation

Existing trends - new challenges - adapted services

Learn more

Rail Essentials

Rail Essentials

Put safety at the heart of your railway operations.

Learn more


Next Steps

Site Selector