Overview of the 2nd Edition of ISO 26262: Functional Safety – Road Vehicles

摘要

Functional safety is of utmost importance in the development of safety-critical automotive systems, especially with the introduction of driver assist and automated driving systems. ISO 26262, Functional Safety – Road Vehicles, has been the de facto standard for functional safety in the automotive electronics domain since the release of its first edition in 2011. It is currently available as a second edition final draft international standard and is expected to be published as an ISO international standard later in the year. In this report, we present an overview of the standard that applies to all activities during the safety lifecycle of system development. At the concept phase of ISO 26262, the hazard and risk assessment process focuses on identifying possible hazards caused by malfunctioning behavior of Electrical/Electronic safety-related systems and mitigating them through the identification of safety goals. The design phase includes system, hardware, and software development with requirements developed from the safety goals. ISO 26262 also prescribes the functional safety management activities to be performed during the safety lifecycle and provides requirements on the supporting processes. In addition to presenting an overview of the standard, this report points to some major changes introduced in the second edition such as the extension of the standard’s scope to include all road vehicles, the objective-oriented confirmation reviews approach, and references to Cybersecurity at the Concept and System Level development to name a few.