Qualitative and quantitative safety assessment of ERTMS operating rules

This paper deals with the common operating rules assessment approach developed during the HEROE (Harmionisation of European Rail Rules for Operating ERTMS) project. This approach is based: on the qualitative and quantitative analyses using a common operational diagram to represent each rule: After a brief presentation of the ERTMS (European Rail Traffic Management Systems) concepts and the HEROE project, the description of the assessment method will be made.-The assessment will be specified and the phases of this assessment process will be detailed. The results of the qualitative and, quantitative safety assessment of set of rules will. be given and the finding will be discussed in the last section.