ISO 26262 core terms — 30 essentials
Thirty high-frequency terms curated from the FuSaCert bilingual glossary, each with a one-line definition and its part reference, sorted alphabetically.
Four-tier risk classification (A–D) derived from severity, exposure and controllability.
Automotive open system architecture standard — Classic (RT / C) and Adaptive (POSIX / C++) branches.
Percentage of failure rate of a hardware element or portion detected by a safety mechanism.
Analysis to identify common-cause and cascading failures supporting independence/freedom arguments.
Agreement between customer and supplier defining functional-safety responsibilities.
Time from occurrence of a fault to its detection by a safety mechanism.
Number of failures per 10⁹ device-hours.
Bottom-up analysis of component failure modes and their effects on the system.
Quantitative analysis combining failure modes, effects and diagnostic coverage for hardware metrics.
Assessment by an independent assessor of whether functional safety is achieved — mandatory for ASIL C/D.
Specification of safety requirements at functional level, allocated to the item's architecture.
Top-down graphical Boolean analysis of fault combinations leading to a top event.
Process to identify hazardous events for an item and derive ASILs and safety goals.
International functional-safety standard for road-vehicle E/E systems.
System or combination of systems implementing a function at vehicle level — unit of ISO 26262 analysis.
Metric of hardware robustness against latent multiple-point faults.
Automotive C/C++ coding guidelines addressing type-conversion, pointer, concurrency and other safety-relevant pitfalls.
Individual fault that in combination with other independent faults leads to a violation of a safety goal.
Average probability per hour of a safety-goal violation from random HW faults, typically in FIT.
Below ASIL A — only a general quality-management system is required.
Portion of a random fault leading to violation of a safety goal despite a safety mechanism (the uncovered share).
Operating mode of an item where absence of unreasonable risk is achieved.
Living document progressively compiling evidence to argue that safety goals are achieved.
Reusable safety element developed without knowing the target vehicle-level item.
Top-level safety requirement derived from HARA to avoid or mitigate hazardous events.
Technical solution to detect faults or control their effects to maintain or achieve a safe state.
Fault in an element not covered by a safety mechanism and leading directly to violation of a safety goal.
Metric of the hardware architecture's robustness against single-point and residual faults.
Bidirectional mapping between requirements, design, implementation, and tests.
Refinement of the FSC into technical safety requirements at system level.
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