An overview of the approaches for automotive safety integrity levels allocation

Gheraibia, Youcef; Kabir, Sohag; Djafri, Khaoula; Krimou, Habiba

Abstract

ISO 26262, titled Road Vehicles–Functional Safety, is the new automotive functional safety standard for passenger vehicle industry. In order to accomplish the goal of designing and developing dependable automotive systems, ISO 26262 uses the concept of Automotive Safety Integrity Levels (ASILs), the adaptation of Safety Integrity Levels. ASILs are allocated to the components and subsystems that can cause system failure and malfunctions that lead to hazards. ASILs allocation is a hard problem consists of finding the optimal allocation of safety levels to the system architecture which must guarantee that the highest safety requirements are met while development cost of the automotive system is kept minimum. There were many successful attempts to solve this problem using different techniques. However, it is worth pointing out that there is an absence of a review that provides an in-depth study of all the existing methods and highlights their merits and demerits. This paper presents an overview of different approaches that were used to solve ASILs allocation problem. The review provides an overview of safety requirements including the related standards followed by a study of the resolution methods of the existing approaches. The study of each approach provides a detailed explanation of the used methodology and a discussion of its strength and weaknesses including the main open challenges.

Citation

Gheraibia, Y., Kabir, S., Djafri, K., & Krimou, H. (2018). An overview of the approaches for automotive safety integrity levels allocation. Journal of failure analysis and prevention, 18(3), 707-720. https://doi.org/10.1007/s11668-018-0466-9

• Journal Article Type: Article
• Acceptance Date: Apr 5, 2018
• Online Publication Date: Apr 11, 2018
• Publication Date: Jun 1, 2018
• Deposit Date: Apr 16, 2018
• Publicly Available Date: Apr 18, 2018
• Journal: Journal of Failure Analysis and Prevention
• Print ISSN: 1547-7029
• Electronic ISSN: 1864-1245
• Publisher: Springer Verlag
• Peer Reviewed: Peer Reviewed
• Volume: 18
• Issue: 3
• Pages: 707-720
• DOI: https://doi.org/10.1007/s11668-018-0466-9
• Keywords: ISO 26262; Optimization; Exact solver; ASIL allocation; Automotive system; Safety requirement; Functional safety
• Public URL: https://hull-repository.worktribe.com/output/783608
• Publisher URL: https://link.springer.com/article/10.1007/s11668-018-0466-9
• Additional Information: Replace with published version?