ISO WIZ Blog
Technical guides on ISO 26262, ISO 21448 SOTIF, ISO 21434 cybersecurity, and Automotive SPICE — for safety engineers who need answers, not overviews.
ISO 26262 FTTI Budgeting: How to Allocate FDTI and FRTI for ASIL C/D Safety Mechanisms
How to budget the Fault Tolerant Time Interval in ISO 26262 — splitting FDTI and FRTI correctly, worst-case timing, and the margin assessors expect for ASIL C/D systems.
ISO 26262 Tool Qualification: TCL Determination for Your Automotive Toolchain (Part 8 Clause 11)
A practical guide to ISO 26262-8 Clause 11 tool qualification — how to determine TI, TD, and TCL, which qualification methods apply at each ASIL, and what an assessor expects to see.
ISO 26262 Software Unit Verification: Code Coverage Requirements for ASIL A through D
A practical guide to ISO 26262-6 software unit testing coverage requirements — what MC/DC actually means, which coverage levels apply at each ASIL, and how to satisfy an assessor.
ISO 26262 Dependent Failure Analysis: How to Satisfy Part 9 Without Redoing Your FMEDA
A practical guide to Dependent Failure Analysis under ISO 26262-9 — covering cascading failures, common cause failures, and the independence claims that hold your ASIL decomposition together.
ISO 26262 and ISO 21434 Co-Engineering: Mapping Safety Goals to Cybersecurity Goals
A practical guide to mapping ISO 26262 safety goals to ISO 21434 cybersecurity goals — covering interaction points, shared work products, and co-analysis methodology.
The BMS-OTA Compliance Problem: How One EV Project Manages ISO 26262, ISO 21434, SOTIF, and ASPICE Simultaneously
A case study in managing four overlapping automotive standards for an EV battery management system with over-the-air update capability — and how ISO WIZ eliminates the coordination overhead.
Inside ISO WIZ: A Platform Walkthrough for Safety Engineers
A technical walkthrough of ISO WIZ — how the unified workflow, cross-standard traceability, and gap detection engine work in practice for automotive safety programs.
ISO 26262, SOTIF, and ISO 21434: Why You Can't Run Them as Separate Projects
The structural dependencies between ISO 26262, ISO 21448, and ISO 21434 make separate compliance programs costly and risky. Here is the engineering case for a unified approach.
One Platform, Four Standards: How ISO WIZ Harmonizes ISO 26262, SOTIF, ISO 21434, and ASPICE
ISO 26262, ISO 21448, ISO 21434, and Automotive SPICE have deep cross-dependencies that separate tools can't manage. Here's how ISO WIZ unifies them.
ISO 21448 SOTIF Explained: Triggering Conditions, Scenarios, and What Safety Engineers Get Wrong
A technical guide to ISO 21448 SOTIF — covering triggering conditions, scenario categories, the four-quadrant risk model, and the most common mistakes safety engineers make when applying SOTIF to ADAS systems.
ISO 21434 TARA: How to Do a Threat Analysis and Risk Assessment for Automotive Cybersecurity
A step-by-step technical guide to performing a TARA under ISO 21434 — covering asset identification, threat scenarios, attack path analysis, and CAL assignment with concrete automotive examples.
Automotive SPICE (ASPICE) Explained: Process Capability, PAM 3.1, and What It Means for Your Safety Program
A technical guide to Automotive SPICE PAM 3.1 — covering process areas, capability levels, the relationship to ISO 26262, and what assessors actually look for.
ISO 26262 Compliance Tools: What to Look for in 2025
A practical guide to evaluating ISO 26262 compliance tools — covering what features matter for safety case management, HARA, FMEDA, and cross-standard traceability.
How to Conduct a HARA for ISO 26262: Step-by-Step with Examples
A practical, step-by-step guide to performing a Hazard Analysis and Risk Assessment (HARA) under ISO 26262, with concrete automotive examples and common mistakes to avoid.
ASIL Decomposition: When to Use It and How to Do It Correctly
A technical guide to ASIL decomposition in ISO 26262 — covering the independence requirements, hardware and software decomposition, common pitfalls, and how to validate your decomposition claims.
FMEDA for ISO 26262: A Practical Guide with PMHF Calculation Examples
A step-by-step guide to performing Failure Mode Effects and Diagnostic Analysis (FMEDA) for ISO 26262 hardware safety — covering SPFM, LFM, PMHF targets, and real calculation examples.