Automotive Safety Integrity Level
Automotive Safety Integrity Level (ASIL) is a risk classification defined by ISO 26262 that determines the level of safety measures required for automotive systems.
“One of four levels that specify the item's or element's necessary requirements of ISO 26262 and safety measures to avoid an unreasonable residual risk.”
(Definition reproduced from the ISTQB Glossary. Copyright belongs to ISTQB.)
View the complete ISTQB GlossaryWhat is Automotive Safety Integrity Level?
ASIL classifies automotive safety risks based on the likelihood, severity, and controllability of hazardous events, guiding the development and testing activities needed to achieve functional safety.
Risk classification: ASIL ranges from QM (Quality Management) to ASIL D, the highest safety level.
Functional safety: Higher ASIL levels require more rigorous development and verification activities.
Testing impact: Test strategies become more comprehensive as safety requirements increase.
Real World Example
A regulated product team is preparing a release where Automotive safety integrity level appears in reviews, test design conversations, or defect triage rather than as an isolated glossary word.
The risk is that the team treats Automotive safety integrity level as interchangeable with nearby ISTQB terms. That makes test scope blurry and can lead to weak evidence for the release decision.
The tester anchors the discussion in the official definition, asks where the concept appears in the product, and designs examples that show the difference between Automotive safety integrity level and similar ideas.
The page becomes useful in practice because Automotive safety integrity level is connected to a specific testing decision, not memorized as a detached definition.
Practice Questions
Question 1
Which statement BEST describes ASIL?
Question 2
Which activity MOST aligns with ASIL in testing?
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