#sotif

(paper comment) Analysis of Safety of The Intended Use(SOTIF)

This paper was published at the time of ISO/PAS 21448. I have never seen anything about ISO/PAS 21448. It is only known that the ongoing ISO 21448 will replace it. Looking at this paper, it seems that the earliest SOTIF focused on vehicle level safety. The ongoing ISO 21448 seems to cover not only the vehicle level, but also the entire lifecycle of FuSa’s systems, hw and sw. (That’s because the…

Differences in scope to be covered by FuSa and SOTIF standards

While a scope of FuSa is Item, a scope of SOTIF is Vehicle.

It means that Focusing on FuSa is narrower and SOTIF is wider.

When developing a vehicle, the first step specifies the vehicle requirements, and the next step is to design the vehicle architecture to allocate the vehicle functions to the vehicle architecture. The building block that allocates is the item. Divide a single item into…

Why is SOTIF in progress?

Recently, I’m learning about SOTIF and I have many questions. So I thought that it would be a good if I ask a question to me and answer the question by myself. So the title is my 1st question. Why do we need SOTIF?

I guess many functional safety experts got lessons that ISO26262 is not enough to achieve functional safety. ISO26262 is a good standard to focus on E/E systems with safety…

(Paper Comment) A System Safety Perspective into Chevy Bolt’s One Pedal Driving

It explain when we should invent “new operation concept” what needs to be considered.

The author of this paper seems to be an safety engineer in GM, and he may be involved in new concept car. I understand that in this author’s circumstance why SOTIF is considered and other considerations are necessary. I read a STAMP/STPA approach in couple of years ago, but I understand the concept better. It is…