On validation of the safety analysis of modern railway systems: Service Operations, Logistics, and Informatics (SOLI), 2011 IEEE International Conference on

O. Lisagor, Linling Sun, T. Kelly, Chao Liu, Ru Niu

Research output: Contribution to conferenceOtherpeer-review


Safety analysis is a key activity for the development of railway transportation systems. The analysis is used not only to determine whether new systems do not expose the general public to unduly high levels of risks, but also to inform the development process itself through identification and allocation of appropriate requirements. Whilst inadequate and inaccurate safety analysis may have potentially catastrophic consequences, it is rarely validated in practice. This paper presents a case for validation of safety analysis of the railway systems along with a technical approach to such validation. The approach is based on the concept of Failure Injection and the Lightweight Refinement relation. The paper further argues that the safety analysis validation should be embedded in a wider uncertainty management framework and shows how this can be made consistent with the spirit of the existing safety standards of the railway domain.
Original languageEnglish
Number of pages6
Publication statusPublished - 2011


  • railway engineering
  • railway safety
  • railways
  • failure injection
  • lightweight refinement relation
  • modern railway system
  • railway domain
  • railway transportation system
  • safety analysis validation
  • safety standard
  • uncertainty management framework
  • Europe
  • Safety
  • Model Based Safety Assessment
  • Safety Analysis Validation
  • Safety Lifecycle

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