# Anthropomorphic Test Devices; Q3s 3-Year-Old Child Side Impact Test Dummy; Incorporation by Reference
> **National Highway Traffic Safety Administration** · Final rule. · Published 2020-11-03 · Effective 2021-01-04 · 85 FR 69898
## Document
- **Document number:** 2020-21478
- **Category:** fmvss
- **Sub-agency:** National Highway Traffic Safety Administration
- **Federal Register citation:** 85 FR 69898
- **CFR reference:** 49 CFR 572
- **Publication date:** 2020-11-03
- **Effective date:** 2021-01-04
- **DOT docket:** Docket No. NHTSA-2020-0088
## Abstract

This final rule amends NHTSA's regulation on anthropomorphic test devices (ATD) to add design and performance specifications for a test dummy representing a 3-year-old child, called the "Q3s" test dummy. The Q3s is an instrumented dummy that can assess the performance of child restraint systems in protecting small children in side impacts. Adding the Q3s provides NHTSA a new test device that can be used to improve side impact protection for children.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2020/11/03/2020-21478/anthropomorphic-test-devices-q3s-3-year-old-child-side-impact-test-dummy-incorporation-by-reference)
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