Overview - ISO/TS 21934-2:2024 (Prospective safety performance assessment by virtual simulation)
ISO/TS 21934-2:2024 provides guidelines and application requirements for the prospective safety performance assessment of vehicle-integrated pre-crash technologies using virtual simulation. Its primary purpose is to define prerequisites, processes and documentation that enable comparable results across different simulation studies, tools and stakeholders. The Technical Specification complements the state-of-the-art foundation given in ISO/TR 21934‑1 and focuses on reproducible, controlled evaluation of crash avoidance and mitigation features in the pre-crash phase.
Key topics and technical requirements
- Evaluation objective: structured process to identify the research question, select relevant scenario categories and define measurable outcomes (metrics).
- Metrics and data: guidance on choosing, compiling and using metrics for safety‑critical events and collision-related outcomes (selection, interpretation and minimum required information).
- Baseline and treatment approach: definitions and approaches for establishing a baseline (without the technology) and a treatment (with the technology) to enable comparative safety performance calculations.
- Virtual simulation framework: modular description of simulation architecture including simulation control, vehicle surroundings, sensor/perception input generation, vehicle-under-test, and collision blocks.
- Models and determinism: expectations for model scope, reproducibility and deterministic simulation behavior to support consistent assessments.
- Documentation: minimum required information for input data, simulation treatment and safety performance reporting; annexed examples illustrate documentation templates.
- Validation and verification: requirements to verify models and validate simulation chains to ensure trustworthy, comparable results.
- Supportive annexes: examples for documenting input data, tool comparisons and study documentation to help implementation.
Practical applications and users
Who uses ISO/TS 21934-2:2024:
- Vehicle manufacturers and suppliers evaluating ADAS and automated driving features in development
- Simulation tool developers ensuring their platforms meet comparability and documentation requirements
- Road authorities, researchers and academia conducting prospective safety studies
- Insurance bodies and consumer organisations assessing likely safety benefits pre-market
Practical uses:
- Designing virtual test suites to quantify crash avoidance potential of brakes, AEB, lane-keeping and perception systems
- Producing comparable safety performance estimates across different simulation tools and study designs
- Supplying documented, repeatable evidence for regulatory consultation, internal verification or safety claims
Related standards
- ISO/TR 21934‑1 - state of the art for prospective safety performance assessment (foundation)
- ISO 12353‑1 - traffic accident analysis vocabulary (terms and definitions referenced)
- ISO 8855 - vehicle dynamics vocabulary (referenced terminology)
These references provide terminology, background and complementary methodology to support consistent application of ISO/TS 21934‑2:2024.
Keywords: ISO/TS 21934-2:2024, prospective safety performance assessment, pre-crash technology, virtual simulation, ADAS, active safety technologies, baseline, simulation framework, validation and verification.