Development of ISO 26262 and ISO 21448 Concept Design Process Integration

Abstract

The development of technology has led to the improvement of vehicle safety and the introduction of autonomous driving system. The autonomous driving related system requires various parts such as camera sensors. Various parts are being added to the vehicle, which is making the system more complicated. Safety-related issues are becoming more important to prevent accidents that may occur during autonomous-driving due to errors caused by increased complexity of the system. For the safety of autonomous driving systems, the International Organization for Standardization introduced the ISO 26262 standard to prevent accidents caused by errors in electrical/electronic systems applied to vehicles. Recently, ISO 21448 is being introduced to compensate for the areas that ISO 26262 does not deal with in relation to autonomous driving. In order to implement autonomous driving technology, ISO 21448 is needed because it is necessary to prevent the risk of performance constraints while implementing functions. However, ISO 21448 is a standard under enactment, and it is difficult to apply to the actual development process. Also, ISO/PAS 21448 is applied with ISO 26262 in the actual development process, so consideration for the application of both processes is needed. This paper proposes an integrated process for applying ISO/PAS 21448 to the actual development process. The integrated process is a combination of ISO 26262 and ISO/PAS 21448, and the concept part of the process is strengthened. For the integration of ISO 26262 and ISO/PAS 21448, each process was analyzed and newly constructed to enhance applicability and reduce trial and error of concept development process.