consulting and development
expert opinions
further education
risk and safety analyses
system solutions for railway safety technology
appraisals of damage
certifications ckbis
evaluation of proof of concept and safety cases
planning and acceptance tests
  • 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

  • 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.

  • 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 basic relay circuit at a mechanical interlocking

    Within the scope of a modification activity in a station, a passenger crossing is constructed. Thereby, an additional speed indicator (Zs3 indicator „2“) has to be installed at a mechanical entry signal.

    The resulting basic relay circuit and its corresponding safety case have to be assessed. The aim of the assessment is the declaration that the basic circuit is appropriate for its intended use.

  • 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.

  • Design review according to BOStrab regulations

    The subject of the project consists of design reviews according to § 60BOStrab for the Stuttgarter Straßenbahnen.

    We provide design review PT 1 and PT 2 for serveral states of construction.

  • 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

  • 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

  • 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.

  • 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.

  • 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

  • Design review of ETCS line installations

    In conjunction with the introduction of ETCS in Denmark, the Danish train control system shall be replaced by ETCS Level 1 LS on the German line Niebüll – Süderlügum – Danish border. Thereby, the permissible speed will be increased.

    Various design reviews are to be included in the project.

  • Expert opinion on rail accident in Hosena

    On July 26 2012, a railway collision between two freight trains happened in Hosena station, resulting in the complete destruction of the mechanical interlocking W3.

    The project concerned an independent economic assessment, aiming to restore the operability after a railway operation error by utilising the methods relating to signalling. The scope of the project refers to the analysis of the pre-accident status of the control and safety technologies and the construction and planning documents used for their conversion into computer-based interlocking. The assessment is to examine which methods were necessary in view of the recognised rules of the technology and which methods could not be applied to the case due to their limitations.

  • 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.

  • Safety Case and assessment on a system solution

    In station Meppen four level crossing activation sites are defined. They are route dependent and require an interface between the mechanical interlocking and the level crossing system. A basic circuit system solution with relay technology shall be developed for this application.

    Both, the basic circuit relay solution and the safety case, shall be examined.

  • 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.

  • Assessment for a route adaption by using a basic relay circuit

    At the Doberlug-Kirchhain station, a track free detection system is retrofitted and hence completed. Furthermore, the signal control mechanism in a mechanical interlocking is converted to the button controls. For doing this, a route adaption by using a basic relay circuit was developed. An assessment report shall be created for the application of this basic relay circuit and its associated safety case.

  • 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.

  • 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.

  • Design review for ETCS

    In the course of the project Karlsruhe – Basel high-speed railway, the ETCS equipment has to be extended in the marshalling yard Basel Bad.

    The Inspection Body CKBIS undertakes the design review.

  • Expert opinion on KISA

    The system solution KISA facilitates communication between subsystems and features of the control command and signalling technology at all levels by deploying modern communication networks. It is advantageous to apply standardised technologies and construct redundant means of transmission. The protection of the network from external deliberate impairments and the security of the information transmission are of great importance in the railway system.

    The assessor takes part in the type approval of KISA with the aim to evaluate the system itself as well as the coherence of the documents.

  • Expert opinion on level crossing accident

    An expert opinion shall be compiled for a level crossing accident. The aim is to assess the cause of the accident and the consecutively actions in order to re-establish the railway operation. The expert opinion was part of a court case.

  • 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

  • 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.

  • Expert opinion on rail accident in Heidelberg

    In the context of a derailment in Heidelberg an expert opinion has to be compiled. The order was to examine causes for the accident and the connection between technical and human failures as well as the correlation of the effectiveness of the train control system.

  • 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.