New methods for safety demonstration -- Satellite-based train localization for safety critical applications. The challenges of performance demo and certification -- Safe Interlocking""Compositional verification of railway interlockings: comparison of two methods" -- "Safety invariant verification that meets engineers' expectations" -- Session "Innovation in Traffic management" -- "Formalization and Processing of Data Requirements for the Development of Next Generation Railway Traffic Management Systems" -- "Acceleration Techniques for Symbolic Simulation of Railway Timetables" -- "Optimal Railway Routing Using Virtual Subsections"Session "Safety and new technologies" -- ""Learn to learn HVAC failures: layering ML experiments in the absence of ground truth" -- Enhancing Autonomous Train Safety Through A Priori-Map Based Perception" -- Lilian Burdy, David Deharbe and Denis Sabatier "Assigning safe software-based systems to meanings" -- Generating and verifying configuration data with OVADO" -- "The 4SECURail Formal Methods Demonstrator" -- Formal Design and Validation of an Automatic Train Operation Control System" -- "Investigating Human Error within GoA-2 railways" -- "A Vision of Intelligent Train Control" -- Analysis of Safety-critical Communication Protocols for On-premise SIL4 Cloud in Railways" -- "TASC: Transparent, Agnostic, Secure Channel for CBTC under Failure or Cyberattack.

This book constitutes the refereed proceedings of the 4th International Conference on Reliability, Safety, and Security of Railway Systems, RSSRail 2022, held in Paris, France, in June 2022. The 16 full papers presented in this book were carefully reviewed and selected from numerous submissions. They cover a range of topics including railways system and infrastructure advance modelling; scheduling and track planning; safety process and validation; modelling; formal verification; and security.