In the same time with the growing of complexity for E/E systems, the level of safety needed to be fulfilled by the work products increased very fast. Could we determine the way to fulfill a standard safety level for all manufacturers? Are these standardized and applicable? The article sheds light these standards and provides the basic knowledge to design a functional safety system from the software point of view. Functional safety concepts are described in the ISO 26262 [1] standard where concepts like ASIL, risk assessment methods and hazards analysis are described very clear. The article briefly describes these concepts in a manner related to software development. Also, in AUTOSAR complaint system the needed for functional safety concepts is very huge because in the context of standardized interfaces between modules can leads also to some errors. But for avoiding this, the AUTOSAR requirements provide some methods that are taken into consideration and described also in the article. Last part of the article presents a lightweight implementation of a safety system considering as use case the designing of a remote keyless entry system.
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