Overview
ISO/TS 5283-1:2025 - Road vehicles - Driver readiness and intervention management - Part 1: Partial automation (Level 2) is a Technical Specification from ISO that provides background, conceptual framing and high‑level guidance on driver state monitoring (DSM) and intervention strategies for SAE Level 2 (partial) driving automation. Published as a first edition in 2025, the document summarizes current DSM implementations (hands‑on and hands‑off L2 systems), human factors evidence on driver behaviour, and considerations for validating driver readiness and intervention effectiveness. Importantly, this TS does not set prescriptive technical requirements for DSM systems; it harmonizes terminology and offers a conceptual framework to compare approaches.
Key topics and (high‑level) requirements
- Conceptual framework for driver readiness
- Defines driver readiness and its subdimensions: driver availability, engagement in the dynamic driving task (DDT), and intention to intervene.
- Proposes layers and measurement constructs to harmonize assessments across implementations.
- Implementations and interventions
- Reviews existing L2 approaches: hands‑on vs hands‑off, typical DSM sensors/architectures, and system intervention strategies to restore driver readiness.
- Driver states and empirical findings
- Summarizes evidence on distraction, drowsiness, reduced engagement, trust and mental models stemming from partial automation use.
- Design considerations
- High‑level guidance on what and how to measure (multiple measures, fusion of indicators), challenges in intervention strategy design, and human‑machine interaction principles.
- Validation and safety assessment
- Outlines considerations for validating DSM effectiveness: unintended behaviours without DSM, mitigation effectiveness, corner‑case scenarios, and field safety effects.
- Terminology harmonization
- Aligns definitions with ISO/SAE PAS 22736 and other referenced normative documents.
Note: The TS compiles requirements and guidelines from regulators and standards bodies but does not prescribe technical thresholds or implementation recipes.
Applications and users
ISO/TS 5283-1:2025 is intended for:
- Automotive OEMs and Tier‑1 suppliers designing ADAS and DSM systems
- Human factors and safety engineers working on L2 vehicle features
- Regulators, conformity assessment bodies and test labs validating driver monitoring approaches
- Researchers, NCAP programs, insurers and policy makers evaluating real‑world safety impacts
Practical uses include creating specification briefs, aligning terminology across projects, informing DSM validation protocols, and comparing intervention strategies.
Related standards and references
Key referenced regulations and standards include:
- ISO/SAE PAS 22736 (SAE J3016 taxonomy)
- UN Regulations (e.g., R79, R157, R171)
- EU Regulation 2019/2144
- SAE J3114, ISO 21717
- Stakeholder programs (Euro NCAP, NHTSA studies)
Keywords: ISO/TS 5283-1:2025, driver readiness, driver state monitoring, DSM, partial automation, Level 2, L2, ADAS validation, intervention management.