ISO 15830-2:2022/Amd 1:2026

Overview

ISO 15830-2:2022/Amd 1 is an important amendment to the internationally recognized standard for road vehicle safety testing involving the WorldSID 50th percentile male side-impact dummy. This amendment specifically addresses the head centre of gravity in the mechanical subsystems of the dummy, refining the design and performance specifications to improve accuracy in side-impact safety evaluations.

The WorldSID dummy is a widely used anthropomorphic test device (ATD) that simulates a mid-sized male occupant in vehicle crash testing. Precise mechanical specifications, such as the exact positioning of the head’s centre of gravity, are critical to ensuring reliable and repeatable impact results that reflect real-world injury risks.

Key Topics

• Mechanical Subsystems Update: This amendment revises section 4.1.1 by removing exclusions related to the neck shroud and attachment screws, ensuring a more integrated head assembly measurement.
• Head Centre of Gravity Specification: The exact head centre of gravity (CG) position is redefined with precise tolerances. The amendment includes updated diagrams illustrating how to measure the CG relative to head reference marks and anatomical landmarks such as the occipital condyle.
• Mass Requirements: Specifies the total assembled head mass, including the neck shroud and attachment screws, to be 4.29 kg ± 0.05 kg. This ensures consistency across test dummies and improved biomechanical fidelity.
• Updated Terminology: Changes the reference in test tables from “Head” to “Head assembly including neck shroud” to better clarify the components considered in measurements.
• Technical Committee Oversight: Prepared by ISO/TC 22/SC 36/WG9, the amendment reflects broad international consensus and adherence to ISO/IEC directives for standards development.

Applications

• Vehicle Side-Impact Testing: Automotive safety engineers use this updated standard to ensure their crash test dummies accurately replicate human head biomechanics during side collisions.
• Regulatory Compliance: Manufacturers and testing facilities rely on ISO 15830-2 and its amendments to meet legal safety requirements and certification protocols worldwide.
• Dummy Manufacture and Calibration: Dummy producers incorporate these mechanical specifications to manufacture and calibrate the WorldSID dummy correctly, maintaining standardization across various testing environments.
• Crashworthiness Research: Researchers studying occupant protection benefit from precise dummy measurements to develop safer vehicle designs and advanced restraint systems.
• Biomechanical Modelling: The defined head CG location supports improved human body dynamic models used in safety simulations and injury prediction.

Related Standards

• ISO 15830 Series: The overall series defines various parts of the WorldSID dummy specifications, including biofidelity, instrumentation, and impact responses.
• ISO 26262: Functional safety of electrical and electronic systems in vehicles, applicable in designing safety-critical components tested with crash dummies.
• SAE J2247: Side-impact crash dummy specifications, often cross-referenced in testing protocols involving WorldSID.
• ECE R95: United Nations regulation for side-impact protection, which references dummy performance standards in vehicle homologation.
• ISO 80601-2-37: Medical device standard on head position and movement measurements that can complement automotive testing practices.

By incorporating the refined head centre of gravity measurement procedures and assembly mass details, ISO 15830-2:2022/Amd 1 enhances the realism and reliability of side-impact dummy testing. This results in improved occupant safety evaluations and contributes to the global effort of reducing injuries in real-world road accidents. Automotive engineers, testing laboratories, and regulatory authorities benefit from this precise, up-to-date international standard.