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DFT modeling approach for operational risk assessment of railway infrastructure by Norman Weik; Matthias Volk; Joost-Pieter Katoen; Nils Nießen is a Computer Science article available to read on EtoBox.

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## Abstract Reliability engineering of railway infrastructure aims to understand failure processes and to improve the efficiency and effectiveness of investments and maintenance planning such that a high quality of service is achieved. While formal methods are widely used to verify the design specifications of safety-critical components in train control, quantitative methods to analyze the service reliability associated with specific system designs are only starting to emerge. In this paper, we strive to advance the use of formal fault-tree modeling for providing a quantitative assessment of the railway infrastructure’s service reliability in the design phase. While, individually, most subsystems required for route-setting and train control are well understood, the system’s reliability to globally provide its designated service capacity is less studied. To this end, we present a framework based on dynamic fault trees that allows to analyze train routability based on train paths projected in the interlocking system. We particularly focus on the dependency of train paths on track-based assets such as switches and crossings, which are particularly prone to failures due to their being

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Author

Norman Weik; Matthias Volk; Joost-Pieter Katoen; Nils Nießen

Publisher

Springer Science and Business Media LLC

Published

2022

Language

EN

Field

Computer Science (Physical Sciences)