Automotive HMI Design Evaluation & Safety Framework
Evaluate automotive HMI designs for usability, cognitive load, and safety compliance
What You Can Do
Systematically assess automotive human-machine interfaces against usability standards, safety frameworks (ISO 26262, SOTIF), and accessibility guidelines. You'll identify cognitive load risks, driver distraction hazards, and compliance gaps—then receive prioritized remediation recommendations backed by safety impact analysis. The skill works from design descriptions, wireframes, or prototypes to produce comprehensive evaluation reports.
Features
Evaluate HMI against automotive design best practices. Analyze task completion flows, navigation efficiency, mental model alignment, and control discoverability.
Quantify driver mental workload during interactions. Score complexity per task, identify peak load scenarios, and allocate attention budget across vehicle activities.
Cross-reference designs against ISO 26262 (functional safety), SOTIF (safety of intended functionality), and NHTSA driver distraction guidelines. Flag gaps and missing controls.
Measure distraction risk based on interaction complexity, visual demand, and manual control duration. Score against industry benchmarks and regulatory thresholds.
Assess WCAG 2.1 compliance, age/ability demographic coverage, alternative interaction paths, and voice control effectiveness across diverse driver populations.
Compare multiple designs against each other and industry standards. Identify strengths, weaknesses, and competitive positioning across usability, safety, and accessibility dimensions.
Rank improvement recommendations by safety impact, implementation effort, and user benefit. Provide risk mitigation strategies and effort estimates for each fix.
Produce detailed, audit-ready evaluation documentation with findings, evidence, remediation strategies, and traceability to standards.
Example Output
Sample Evaluation Output — Climate Control Interface:
Usability Score: 7.2/10
- Temperature adjustment: 2.1 second task (efficient)
- Mode selection: 4.8 second task (acceptable)
- Display readability at 60 mph: 94% legible
- Mental model alignment: Good (expected behavior matches physical logic)
Cognitive Load: Moderate (2.8/5)
- Peak load during highway operation: High (3.8/5) — recommend voice shortcuts
Safety Compliance:
- ISO 26262 ASILs: Touch interaction requires fallback (voice control ✅)
- SOTIF gaps: No degraded-mode handling if screen fails (⚠️ Priority 1)
- Distraction risk (NHTSA): 4.2/10 (acceptable for non-critical operation)
Top Fixes:
- Add haptic feedback for mode confirmation (Priority 1 | Safety)
- Implement voice-only mode for temperature-only control (Priority 2 | UX)
- Test with 65+ age group for readability (Priority 2 | Accessibility)
Accessibility: WCAG Level AA (87% compliant) — color contrast sufficient, voice controls available, physical fallback present.
What's Included
- Comprehensive Usability Framework: Structured methodology for evaluating task flows, navigation, information architecture, and user mental models against automotive UI best practices.
- Safety Standard Compliance Checklist: Cross-referenced evaluation criteria covering ISO 26262, SOTIF, ISO/SAE 21434, and NHTSA driver distraction guidelines with mapping templates.
- Cognitive Load Assessment Methodology: Quantified workload scoring framework calibrated for highway, city, and parking scenarios with peak load identification and attention budget allocation.
- Driver Distraction Risk Matrix: Scoring model based on visual demand, interaction duration, and manual control complexity, benchmarked against industry standards and regulatory thresholds.
- Accessibility Evaluation Criteria: WCAG 2.1 compliance checklist, age/ability demographic assessment templates, and alternative interaction path validation for diverse driver populations.
- Remediation Prioritization Template: Structured ranking system weighing safety impact, UX improvement, effort, and risk mitigation for actionable improvement recommendations.
Who It's For
- UX/UI Designers
- Automotive Safety Engineers
- Product Managers (vehicle infotainment/telematics)
- HMI/Interaction Designers
- Quality Assurance Engineers
Best For
- Pre-production HMI design reviews
- Safety and compliance audits
- Usability testing analysis and interpretation
- Accessibility assessments
- Interface redesign prioritization
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