ISO 21448: Scenario-Based Testing Pipelines — Logical Scenarios, Parameter Spaces, and Coverage

Date
2027-04-05
Location
Online
Host
Zach L
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About this event

A live 30-minute expert session on Scenario-Based Testing Pipelines — Logical Scenarios, Parameter Spaces, and Coverage (ISO 21448 — Safety of the Intended Functionality). What We'll Cover: What the scenario abstraction levels are and how scenario-based testing implements ISO 21448 Clauses 9 and 10 verification and validation The pipeline step by step: functional scenario catalog, parameter-range definition, sampling strategy (grid, random, importance), and concrete test generation How the pipeline maps to ISO 21448 V&V strategy and produces the scenario catalog, coverage report, and pass/fail criteria artifacts Common mistakes: parameter ranges without ODD justification, coverage claimed on scenario count instead of parameter space, no criticality metric for sampling The traceability assessors check: each hazardous behavior linked to logical scenarios, sampling rationale, and reproducible concrete scenario definitions Related topics: scenario based testing · logical scenarios · concrete scenarios · parameter space · scenario coverage · openscenario · test case generation · criticality metrics · sampling strategy · scenario catalog · pegasus method · verification strategy · adas test pipeline · coverage argument Critical Systems Analysis provides embedded functional safety consulting for ISO 21448 — Safety of the Intended Functionality. Learn more: https://criticalsystemsanalysis.com Partner with us: https://meetings.hubspot.com/benjamin-twombly/strategic-partnerships

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About Functional Safety Foundations

This online session delivers expert-led instruction on the regulatory landscape and implementation approach for Functional Safety Foundations.

The cross-sector fundamentals underlying every functional safety standard: risk as severity × likelihood, the safety function concept, integrity levels, the safety lifecycle, and the split between random and systematic failures.

What it regulates

Shared vocabulary and reasoning: hazard → risk → risk reduction allocation → safety requirement → verified implementation → maintained integrity in operation.

Who must comply

Everyone entering the field — the conceptual base of the entire catalog.

Key requirements of Functional Safety Foundations

  • Hazard and risk fundamentals
  • Safety function anatomy: sensor-logic-actuator with defined safe state
  • Integrity ladders (SIL/PL/ASIL/DAL) as risk-reduction currencies
  • Random vs systematic failure treatment
  • Lifecycle and management of functional safety incl. competence

Key concepts: Functional Safety Foundations

Functional safety management
Planning, competence, documentation and assessment wrapped around technical work.
Random vs systematic
Hardware wear-out/chance failures quantified statistically versus design/process errors controlled by rigor.
Risk reduction allocation
Distributing required risk reduction among mechanical design, safeguards, control functions and procedures.
Safe state
The defined condition a function drives the equipment to on demand or fault.

Frequently asked questions: Functional Safety Foundations

Why can't testing alone prove safety?

Rare-event targets (like 1e-7/h) are unverifiable by test duration, and systematic errors evade random testing — hence the standards' dual machinery of quantified hardware analysis plus process rigor and independent assessment.

Standard information based on the published text of Functional Safety Foundations. Event content is provided by the host. For authoritative guidance, consult the official standard body.