Meaning
International functional safety standard governing the development of electrical and electronic systems within road vehicles. Compliance with ISO 26262 is required for passenger vehicle systems whose failure could lead to hazardous situations. The document establishes a lifecycle framework that guides development from conceptual design through decommissioning.
It ensures that systematic faults are mitigated through structured engineering.
Technical Standard
The standard organizes requirements into ten distinct parts covering management, concept, product development, and supporting processes. Developers apply ISO 26262 to classify hazardous events based on severity and exposure. This classification yields an Automotive Safety Integrity Level from A to D. Higher risk profiles require more rigorous development and verification methods.
For instance, the safety mechanisms must undergo extensive fault injection testing to guarantee that the system can transition to a safe state during an unexpected hardware malfunction.
Assessment Methodology
Verification relies on safety audits and independent functional safety assessments throughout the development lifecycle. The assessment verifies that all hazard analyses and safety requirements are complete. It generates a safety case that stands as formal proof of standard compliance.
Without this case, a vehicle cannot be cleared for volume manufacture.
Production Integration
Applying these protocols during silicon design and software development enforces deterministic coding standards and hardware redundancy. Developers of microcontrollers must supply safety manuals detailing the assumptions of use. These manuals allow board integrators to align the component limits with the requirements of the broader system.
