# 2024-30985: Anthropomorphic Test Devices, HIII 5TH Percentile Female Test Dummy; Incorporation by Reference

2024-30985, Anthropomorphic Test Devices, HIII 5TH Percentile Female Test Dummy; Incorporation by Reference, is a Federal Register rule from an unnamed agency published 2025-01-03, effective 2025-02-18 (as of 2026-06-11).

- Canonical: https://policyrisk.com/federal-register/2024-30985
- As of: 2026-06-11
- Plain-text twin of the page above; the HTML and this file carry the same facts.

## Facts
- Document number: 2024-30985
- Title: Anthropomorphic Test Devices, HIII 5TH Percentile Female Test Dummy; Incorporation by Reference
- Type: Rule
- Agencies: unknown
- Citation: unknown
- Published: 2025-01-03
- Effective: 2025-02-18
- Comments close: not stated
- Significant: no
- Touches household money: no
- Regulation identifier numbers: none
- Last updated: 2026-06-11

## Summary

The National Highway Traffic Safety Administration updated the specs for the Hybrid III 5th Percentile Female Test Dummy’s chest jacket and spine box to fix inconsistencies and reduce test noise. These changes help car makers get more reliable crash test results and take effect on February 18, 2025. If you’re involved in making or using these dummies, keep an eye on the new rules and deadlines!

## Abstract

This document revises the chest jacket and spine box specifications for the Hybrid III 5th Percentile Female Test Dummy (HIII-5F). The jacket revisions resolve discrepancies between the jacket specifications in subpart O and jackets available in the field, and ensure a sufficiently low level of variation between jackets fabricated by different manufacturers. The spine box revisions eliminate a source of signal noise caused by fasteners within the box that may become loose during sled or vehicle crash tests. This rulemaking responds to a petition for rulemaking from the Alliance of Automobile Manufacturers.

## Effects PRIA read

- Standardized Chest Jacket Specifications: benefit, low. If you make or use Hybrid III 5th Percentile Female (HIII-5F) dummies, NHTSA revised the chest jacket specifications to adopt the SAE J2921 design and adjusted some dimensions and tolerances. The rule takes effect on February 18, 2025, and NHTSA states that current SAE jackets in the field conform…
- Spine Box Noise Fix Adopted: benefit, medium. If you use HIII-5F dummies in crash or sled tests, the spine box specification is revised to add side plates and countersunk bolts to stop fasteners from becoming loose and creating signal noise. The rule takes effect on February 18, 2025, and NHTSA says the change eliminates the thorax acceleromet…
- Limited Cost Impact on Manufacturers: benefit, low. NHTSA says the costs from these changes are limited to acquiring new dummy parts and that the finalized changes would not require parts beyond what would be purchased in the normal course of business. The agency also says the final rule is not intended to impose new requirements on vehicle manufact…

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## Sources
- [2024-30985 on federalregister.gov](https://www.federalregister.gov/documents/2025/01/03/2024-30985/anthropomorphic-test-devices-hiii-5th-percentile-female-test-dummy-incorporation-by-reference)
- [2024-30985 as published (PDF)](https://www.govinfo.gov/content/pkg/FR-2025-01-03/pdf/2024-30985.pdf)

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Source: PRIA, https://policyrisk.com/federal-register/2024-30985 (as of 2026-06-11).