# Anthropomorphic Test Devices; 12-Month-Old Child Dummy; Final Rule; Response to Petitions for Reconsideration
> **US Department of Transportation** · Final rule; response to petitions for reconsideration. · Published 2001-08-30 · Effective 2001-10-29 · 66 FR 45777
## Document
- **Document number:** 01-21545
- **Category:** other
- **Sub-agency:** US Department of Transportation
- **Federal Register citation:** 66 FR 45777
- **CFR reference:** 49 CFR 572
- **Publication date:** 2001-08-30
- **Effective date:** 2001-10-29
- **DOT docket:** Docket No. NHTSA-00-7052
## Abstract

On March 31, 2000, NHTSA published a final rule adopting design and performance specifications for a new 12-month-old infant dummy. Four organizations filed petitions for reconsideration of this rule. In response to these petitions, this document makes several minor changes to the final rule, including: adding a channel frequency class specification if a rotary potentiometer is used for measuring head rotation; revising the impact probe specifications to include provisions for mounting suspension hardware if a cable system is used for impacts, adopt a lower minimum mass moment of inertia, and clarify the specification for free air resonant frequency; revising the material specifications in several drawings; and correcting several minor errors in these drawings, and in the Procedures for Assembly, Disassembly and Inspection (PADI) Document. This document also denies a request to add a provision for post-test calibration of the dummy.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2001/08/30/01-21545/anthropomorphic-test-devices-12-month-old-child-dummy-final-rule-response-to-petitions-for)
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