Grants and Contributions:

Grant or Award spanning more than one fiscal year (2017-2018 to 2021-2022).

When a vehicle is designed, the car maker - the Original Equipment Manufacturer (OEM) - makes every effortx000D
to ensure that the vehicle will be safe and reliable. As vehicles have increased in complexity with the additionx000D
of software-enabled hybrid powertrains and Advanced Driver Assistance Systems, the system design and safetyx000D
processes have had a corresponding increase in required effort and difficulty. Recently, seemingly minorx000D
incremental changes in the vehicle's software and/or physical design have resulted in safety recalls because ofx000D
unforeseen subsystem interactions that have reduced vehicle safety and/or reliability to unacceptable levels. Tox000D
help address these issues, OEMs and their suppliers collaborated to produce the standard ISO 26262 Roadx000D
Vehicles - Functional Safety, which prescribes processes and their outputs that should be produced as part ofx000D
the system, software and safety processes for vehicle features that require different Automotive Safety Integrityx000D
Levels. As OEMs and suppliers strive to be consistent with ISO 26262, an increasingly important questionx000D
arises: when can design and safety assurance artefacts be safely reused and when do the processes and thex000D
resulting work products have to be redone? Automotive companies must address this key question if they wantx000D
to remain competitive and be able to deliver ever safer vehicles at a purchase cost that the public is willing tox000D
pay. To help the Canadian automotive industry address this issue, this project will model the design and safetyx000D
artefacts and their relationships with explicit safety assurance arguments known as a (safety) assurance case.x000D
We will provide model management processes and tools to analyze the models and determine the impact of ax000D
design change on the assurance case. This will help engineers determine which parts of the assurance case canx000D
be safely reused and where it requires further engineering effort to demonstrate that the new system isx000D
acceptably safe. The work will be extended to manage models of safety assurance for entire product lines tox000D
help OEMs deal with the reality of manufacturing for global product development.