Print Email Facebook Twitter Analysis of Safe and Effective Next-Generation Rail Signalling Systems using a FTA-SAN Approach Title Analysis of Safe and Effective Next-Generation Rail Signalling Systems using a FTA-SAN Approach Author Aoun, J. (TU Delft Transport and Planning) Goverde, R.M.P. (TU Delft Transport and Planning) Nardone, Roberto (Università degli Studi di Napoli Parthenope) Quaglietta, E. (TU Delft Transport and Planning) Vittorini, Valeria (Università degli Studi di Napoli Federico II) Date 2023 Abstract Moving Block (MB) and Virtual Coupling (VC) rail signalling will change current train operation paradigm by migrating vital equipment from trackside to onboard to reduce train separation and maintenance costs. Their actual deployment is however constrained by the industry’s need to identify confi gurations of MB and VC signalling equipment which can eff ectively guarantee safe train movements even under de-graded operational conditions involving component faults. In this paper, we analyse the eff ectivity of MB and VC in safely supervising train separation under nominal and degraded conditions by using an innovative approach which combines Fault Tree Analysis (FTA) and Stochastic Activity Network (SAN). A FTA model of unsafe train movement is defi ned for both MB and VC capturing functional interactions and cause-eff ect relations among the diff erent signalling components. The FTA is then used as a basis to apportion signalling component failure rates needed to feed the SAN model. Eff ective MB and VC train supervision is analysed by means of SAN-based simulations in the specifi c scenario of an error in the Train Position Reporting (TPR) for fi ve rail mar-ket segments featuring diff erent traffi c characteristics, namely high-speed, mainline, regional, urban and freight. Results show that the overall approach can support infra-structure managers, railway undertakings, and rail system suppliers in investigating ef-fectiveness of MB and VC in safely supervising train movements in scenarios involving diff erent types of degraded conditions and failure events. The proposed method can hence support the railway industry in identifying eff ective and safe design confi gura-tions of next-generation rail signalling systems. Subject Moving BlockVirtual CouplingSafetyPerformanceStochastic Activity Network To reference this document use: http://resolver.tudelft.nl/uuid:9174a937-47b4-45e0-829f-151278c13cbf Page numbers 137-137 Event RailBelgrade 2023, 2023-04-25 → 2023-04-28, Faculty of Transport and Traffic Engineering University of Belgrade, Belgrade, Serbia Part of collection Institutional Repository Document type abstract Rights © 2023 J. Aoun, R.M.P. Goverde, Roberto Nardone, E. Quaglietta, Valeria Vittorini Files PDF Analysis_of_Safe_and_Effe ... proach.pdf 103.17 KB Close viewer /islandora/object/uuid:9174a937-47b4-45e0-829f-151278c13cbf/datastream/OBJ/view