Anthropomorphic Test Devices; 12-Month-Old Child Dummy; Final Rule; Response to Petitions for Reconsideration

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.