Abstract The implementation of the open transmission standards to railway control systems requires the estimation of Tolerable Hazard Rate corresponding to EU standards. The transmission channel must satisfy the obligatory measures related to the assigned SIL level. Both cable and wireless transmission standards must be analysed corresponding to hardware failure rates in railway control devices. The paper deals with failure analysis in some railway control systems including open transmission solutions. The result based on FTA methods is a good criterion for the introduction of new transmission technologies.


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