SOTIF release shall be conducted by reviewing all SOTIF activities as well as evaluating the acceptability of the residual risks. Several issues need to be evaluated in this context;
- whether all the specified use cases are taken into account by the validation strategy within the scope of the intended functions;
- whether the intended functionality achieves a minimum fall-back risk condition;
- whether the V&V acceptance criteria sufficiently ensure that the risk is reasonable;
- whether sufficient evidence is provided to argue the absence of unreasonable risk in the event of an unintended behaviour.
SOTIF release can be accepted when 1, 2 and 3 are satisfied. SOTIF release could be conditionally accepted when 1, 2 and 4 are ensured; the condition is satisfied when the risk is not unreasonable for the specified use cases. It is recommended to reject SOTIF release and make functional improvements when all above issues cannot be ensured (ISO 21448, 2022).
Main Question
Has a methodology and criteria been established for evaluating all SOTIF activities ahead of SOTIF release, and the acceptability of residual risks?
References
- ISO (2022) 21448: Road vehicles — Safety of the intended functionality. Available at:https://www.iso.org/standard/77490.html (Accessed: 18 October 2023)