From an SAE automation level of one or higher, the consideration of ISO 26262 alone is no longer sufficient, and SOTIF should be considered in the development. ISO/DIS 21448 focuses precisely on these aspects and offers a systematic procedure for identifying these risks and developing countermeasures. Analogous to ISO 26262, the goal is to reduce the risk associated with SOTIF to an acceptable level.
ISO/DIS 21448 describes a complete process parallel to the functional safety procedure described in ISO 26262 and established in practice. The increasing number of driver assistance systems with a corresponding SAE level underlines the relevance of SOTIF for the development process of current and future development projects.