We are experts. Our competencies range from consulting and development to expert opinions and further education to system solutions and analyses.

system solutions for railway safety technology

risk and safety analyses

consulting and development

expert opinions


further education


Railway safety technology is subjected to long life cycles and a high standard of safety.

Modern information technology with its short innovation cycles will increasingly play a vital role with regard to obtaining replacement. In this context, proof of constant safety needs to be provided. There are approaches and thus visions and prospects to further enhance partial solutions towards an integrated system solution that will become state-of-the-art.


Upon the agreement with the customer, we produce special system solutions for various task descriptions.

Based on the knowledge of automation engineering railway operation science and safety science we develop innovative solutions. Thereby, we demand ourselves to constantly focus on the core requirements. Thus, the basis for the future standardization of safety engineering systems can be established.

Our Competence

Depending on the particular topic, system concepts are to be created, compared and assessed accordingly. Generic system solutions are to be conceptualized as well.

Our staff has a wide range of experience of the control and safety technology. Additionally, their knowledge is to be strengthened by continuing education.


  • New Secondary Railway

    Besides the very efficient main line railways, there are numerous further railway lines for regional passenger and freight traffic. These so called secondary railway lines are meant to play an important role in the development of local/rural infrastructure. The aim of the project is to develop a new train control and safety system for this type of infrastructure using state-of-the-art information technology and satellite positioning systems to reduce life-cycle costs of wayside equipment.

  • Migration study ETCS on eastern corridor

    Commissioned by DB Netz, a study is developed on the migration strategy of ETCS in an area of the eastern corridor until the year 2030. Future concepts in the fields of interlocking, traffic and technology are evaluated based on a status analysis for the section between Markkleeberg-Gaschwitz and Hof.

    Finally, an investigation of variants for the migration towards ETCS is carried out and a recommendation is made.

  • Research on optimisation of level crossing systems

    Commissioned by DB Netz, a study is developed on the migration strategy of ETCS in an area of the eastern corridor until the year 2030. Future concepts in the fields of interlocking, traffic and technology are evaluated based on a status analysis for the section between Markkleeberg-Gaschwitz and Hof.

    Finally, an investigation of variants for the migration towards ETCS is carried out and a recommendation is made.


Railway systems are subject to high safety requirements. The proof of safety is required for all new and further development of components, partial systems and complex system solutions.

The risk analysis process is carried out in accordance with directives and standardised procedures.


We follow a risk-orientated approach in line with the recognized technical regulations and relevant standards. Thus, specially developed procedures as well as methods in conformity with standards are applied for risk and safety analysis.

The result of risk and safety analysis is to identify the necessary safety levels (i. e. Safety Integrity Level – SIL) for systems in the railway section.

Our Competence

Our staff has a wide range of experience of carrying out safety-targeted analysis in the area of the control and safety technology.

Various tools are to be used.


  • Research Project on Application of CSM Regulation

    If a railway company aspires to participate in railway operation in Germany for the first time, this can be defined as a change to the railway system in a Member State. Consequently, risk management processes used to assess the impact of the change on safety levels and compliance with safety requirements must be applied. On behalf of the Eisenbahn-Bundesamt (German Federal Railway Authority) an exemplary implementation of this procedure will take place for a hypothetic railway company.

  • Inspection on a generic circuit between interlocking systems

    In order to demonstrate that a generic relay circuitry for the interface between two electronic interlocking systems works properly in the events of notifying the profile clearance, transiting the warning signal and the logical agreement between two interlocking systems, a safety case according to Mü 8004 is created.

    In addition, an assessment of the generic relay circuitry is carried out by using the cases of profile clearance and Ks distant signal. The aim of the assessment is a type approval or an approval according to VV NTZ.

  • Support of Safety Management and Validation Processes

    If an existing interlocking system shall be adapted to country-specific requirements, extensive development phases and quality assurance steps are necessary. A variety of activities in safety management and validation are required to approve such a system. In these activities, we take over the evaluation and creation of necessary documents within the scope of the safety case and validation.

    @ Deutsche Bahn AG/Kai Michael Neuhold


System features and components of the control and safety technology are subject to strict development and application conditions. The introduction of new technologies usually requires a safety assessment. Prepared documents and developing processes should be taken into consideration. It is helpful to provide competent and technical support.


We handle the extensive editorial work of documentation for the approval procedure and offer advices in terms of content.

Conforming to the respective standards, we are able to establish a safety concept for our customers.

Furthermore, we perform analyses to railway-specialised questions such as feasibility studies or variants examinations.

Our Competence

We provide our clients with our expertise in the area of the railway systems and safety science. We consult them concerning optimal system solutions and follow the aim to bring sustainable and future-proof results.

We have extensive experience of performing feasibility studies. The close collaboration with the assessor as well as the experience gained from the certification process enable the establishment of an aim- orientated development.


  • Review of Dutch ERTMS trackside specifications

    CERSS Kompetenzzentrum Bahnsicherungstechnik GmbH supports DB E&C in the review of the Dutch ERTMS trackside specification documents regarding consistency, absence of contradictions and plausibility. The main aim of the work is to find unnecessary, implausible and one-sided requirements as well as cost drivers. The project is accompanied by the Dutch Ministry of Infrastructure and Water Management.

    © Rob Dammers

  • Feasibility study technical innovations at Usedomer Bäderbahn

    The feasibility study deals with technical innovations at the Usedomer Bäderbahn (UBB). The aim of the study is to analyse whether trains in accordance with German BOStrab can be used on tracks in accordance with EBO. The innovation concept for the pilot line Velgast – Barth – Prerow shall be applicable to other lines of the UBB on the Isle of Usedom with similar framework conditions.

    As a result, the contracting body shall be able to decide whether the pilot project can be considered for “innovative technologies”. Thus, we deliver generalised results as well as studies on alternatives for the integration of the station Velgast and broach the issue of the transferability to the Usedom tracks.

  • Research Project on ERTMS test cases

    The aim of the project on behalf of the Eisenbahn-Bundesamt (German Federal Railway Authority) is to develop a complete test case catalogue. This shall be carried out on basis of the commissioning approval of VDE 8 and the planning for the Rail-Freight-Corridor 1. The research project is composed of two work packages. First, the German railway-related operational cases are presented. Further, test case groups and test case subgroups containing a generic test case catalogue are defined. Each test case subgroup can be structured in operational procedures.

    Finally, the completeness of the test cases is examined by experts from both TU Dresden and CERSS. Thereby the expert knowledge of the ETCS type approval can be incorporated.


Changes, new developments and alterations require an understandable assessment with regard to the correct function principle.

The assessment has to be conducted in line with recognised technical regulations and safety judgements.


The wide range of examined objects primarily refers to interlocking technology (including older technologies) and its components, level crossings and level crossing protection systems, automatic train control systems such as ETCS and others.

Audits and expert opinions on processes of planning, project planning, production and verification are conducted.

Our Competence

This competence is taken over by Prof. Dr.–Ing. Jochen Trinckauf. He is a well-known independent safety assessor with experience of over 30 years recognised by the Federal Railway Authority (Eisenbahn-Bundesamt). He is also accredited by the railway authorities of the States of Saxony and Brandenburg as well as by courts and technical regulatory authorities.


  • Expert opinion to determine a cause of derailment with minor property damage

    There are different views on the cause of a derailment due to the passing of a switch under the shunting unit: rail transport company or rail infrastructure company. CKBIS inspection body was assigned to provide an expert opinion to investigate the cause of the accident. For this purpose, existing documents are to be evaluated, the interlocking logic of the relay interlocking is to be analysed and the event has to be reconstructed on site. The assessment will include possible scenarios in order to consider all operational, safety and external influencing factors.

    © AdobeStock/ON-Photography

  • Design review and Approval tests for BVG

    Purpose of the project is the scheduling and execution of design review and approval tests according to BOStrab for changes in the existing interlocking Berlin Friedrichstraße. These changes are necessary due to the extension of Berlins underground line U5 and the originating interchange station Unter den Linden.

    berlin metro

  • Expert opinion on system for ETCS type approval

    DB Netz AG will implement the interoperable European Train Control System (ETCS) on numerous railway lines. The system development and applicability in the grown environment of the German rail operations and its technology apparently pose one of the greatest challenges since the introduction of electronic safety systems for railways. The procedure of the new type approval by the German Federal Railway Authority includes the appointment of an expert who evaluates the system integration as well as the safety assessment. Owing to our professional expertise, we are capable of taking on this task.

    The first two lines could be put into operation on time in 2015 and 2017. The activities will be pursued for new ETCS specifications.


It is obligatory to apply the CENELEC-standards for changes and new safety relevant systems in the area of railway systems. This applies especially for the safety features and components of the safety technology, for which a proof of the development and certification conducted in conformity with standards is necessary.

During the evaluation of the conformity with standards and the subsequent certification, the entire system developments (EN 50126), software developments (EN 50128) as well as hardware developments (EN 50129) are to be examined.


Our comprehensive performance spectrum regarding this competency is designed according to customer’s requirements. We compile the required life-cycle documents for the certification of the entire system. Alternatively, a consultation can support the compilation of the documents.

Moreover, phase-related results are to be verified in the process of the compilation of the documents in line with EN 50126. Supported with inspection of the development and production process, a SIL-certification is to be subsequently created.

The required proof, that the system correlates to the safety requirements, can be produced with the aid of assessment and certificate upon a preceding positive verification. The certificate issued in the result enables a recognition by the National Supervisory Authorities.

Our Competence

Our staff is experienced. The certification is taken over by our inspection body CKBIS, which guarantees an independent assessment.


  • Certification of platform screen doors

    The stations at São Paulo Metro lines 5 and 17 are upgraded with platform screen doors. This will prevent passengers from unintentionally falling into the track area or, in the case of monorail systems, into depth. There are functional safety requirements for the communication between the train and the platform screen doors. Safety needs to be proven according to the European standard for RAMS.

    Our company supervises this process. Furthermore, we advise operators and system suppliers and we also conduct the risk and safety analysis. The resulting SIL 3 selection is verified by our independent experts.

    Finally, the generated, verified and validated documents are examined according to EN 50126 and a certificate is prepared.

  • Certification process for level crossing system

    The system supplier adapts an existing level crossing system. This process is supported by CERSS Kompetenzzentrum Bahnsicherungstechnik GmbH. Therefore, we compile several documents and verify all required lifecycle documents according to EN 50126. A risk analysis is provided, too.

  • Certification process for electronic back-mirror-system

    Within the scope of the certification process, the documentation of the development process was verified independently by our experts according to CENELEC standards. A safety assessment expertise was performed, too.


Shortage of staff has become increasingly serious nowadays. The railway-related knowledge concerning the control and safety technology complicates the qualification of new staff. In addition, the growth of technology demands a further continuing education of experienced staff.


We give lessons and instructions in both English and German to our customers according to their needs. The content of the lessons includes the basic and special knowledge in the area of the control and safety technology of the railway system.

The content of lessons covers the followings topics: railway operation basics, safety features/components, railway route safeguarding technologies, automatic train systems, level crossings and safety science. The seminars take place either in Dresden, at the customers’ locations or online, as required.

Our Competence

Our staff is well experienced in transferring knowledge in the area of the control and safety technology. They periodically undertake pedagogical and technical trainings.

In cooperation with the Dresden University of Technology (Technische Universität Dresden), we hold further education seminars at home and abroad.

Additionally, the education programmes also include the project-related supervision of student research papers, doctoral theses as well as trainings for experts.


  • Training for technical supervisors

    The course is part of the schedule of the training for system administrators in operation control centres. The two modules “Introduction to control command and signalling (CCS) technology” and “Installation and maintenance of CCS systems in the operations centre” according to DB guidelines are part of the course.

    The aim of the course is to show system knowledge and provide understanding of safety principles in the railways.

  • Training in control and safety technology

    Training concerning basics and selected themes in the control and safety technology is regularly given to staff of Thales Germany. The aim of the training is to convey the system knowledge of the railway control and safety technology and to enhance the understanding of the safety philosophy in the field of railway.

    © thinkstock

  • Training for safety assessment

    In the framework of a workshop with staff of the China Railway Test and Certification Center (CRCC), we moderate the topic of independent assessment of systems and components of control command and signalling technology. Its objective is to introduce the well-known process of assessment.

    Experts of CERSS Kompetenzzentrum Bahnsicherungstechnik GmbH give an overview about the common practice and demonstrate it along with various examples. The workshop takes place in Peking for five days.

    @ Thinkstock