Risk ASSessment ) : Risk Assessment on High Speed GSM - R network

Within the framework of high speed / high capacity lines operated by ERTMS system (GSM-R, ETCS) a research has been carried out on the possible cause of degradation of GSM-R system, related risks and possible mitigations. Location of the critical zones from the propagation point of view, localization of the possible sources of degradation of the functionality of the system and sources of electromagnetic interference in GSM-R band have been identified. Analytic model of interference sources has been implemented and evaluation of the ‘out of service probability’ (Outage) of the system and consequences has been performed. Definition and impact of the possible countermeasures are reported. Definition of possible tests to carry out for study validation is reported. Analysis of the main sources of interference/unavailability has been implemented on the Roma-Napoli high speed line taken as a case study for the other high/high capacity lines.