Quantification of Preconditions for Processing Safety Relevant Vehicle Systems

The international standard ISO 26262 is used to derive new development processes, work products and roles during product development in the automotive industry. For a suitable development of safety relevant vehicle systems, the new work steps must be integrated into the existing development process. The challenge is to apply a proper method for an integration of these additional activities. For the integration a quantification of the process maturity of the safety relevant development processes supports thereby, in order to make a statement about the precondition for the treatment of safety relevant vehicle systems. Furthermore, this identifies development fields in the process integration. This paper shows how a coefficient for measuring process maturity is established. Therefore, the functional safety related activities are identified and isolated. In the next step supporting processes are defined. Further, weighted means are determined. The aim is to have an indicator for the safety relevant development processes already at the beginning of the development and thus to be able to take appropriate measures in advance. As an application example, a project in the automotive sector for an electronic air suspension system is considered. This is followed by differentiated derivations of measures based on the established coefficients for the individual domains.