ISO 21448

Intended Functionality

SOTIF analysis and validation for ADAS and autonomous system, addressing risks from performance limitations, sensor insufficiencies, and unknown scenarios.

SOTIF

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🔍

Identification and Analysis

Identification and analysis of both known and reasonably foreseeable scenarios where intended functionality may lead to unreasonable risk.

🎯

Development of Safety Architecture

Development of safety architecture that achieves required ASL decomposition, freedom from interference, and built tolerance through hardware and software design.

📋

Definition and Refinement

Comprehensive SOTIF approach demonstrating sufficient scenario coverage and acceptable residual risk levels.

⚙️

Implementation of Measures

Implementation of measures to reduce risk from performance limitations, sensor design, verification, validation, and field monitoring.

✔️

Demonstration

Demonstration that SOTIF goals are achieved and residual risk within acceptable criteria.

📊

Post-deployment Monitoring

Post-deployment monitoring strategies to detect safety-critical anomalies and trigger corrective or mitigation actions.

SOTIF Matters

Advanced driver assistance and automated driving systems can exhibit unsafe behavior even when all components function correctly. ISO 21448 provides the methodology to systematically identify, analyze, and mitigate these risks, complementing ISO 26262 to achieve comprehensive system safety. Our SOTIF expertise covers the full spectrum from Level 2 ADAS through Level 4 autonomous with proven methodologies for scenario generation, validation, and acceptance demonstration.

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