49 CFR § 572.4 - Terminology.
---
identifier: "/us/cfr/t49/s572.4"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "49 CFR § 572.4 - Terminology."
title_number: 49
title_name: "Transportation"
section_number: "572.4"
section_name: "Terminology."
chapter_name: "NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION"
part_number: "572"
part_name: "ANTHROPOMORPHIC TEST DEVICES"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "49 U.S.C. 322, 30111, 30115, 30117 and 30166; delegation of authority at 49 CFR 1.95"
cfr_part: "572"
---
# 572.4 Terminology.
(a) The term *dummy,* when used in this subpart A, refers to any test device described by this part. The term *dummy,* when used in any other subpart of this part, refers to the particular dummy described in that part.
(b) Terms describing parts of the dummy, such as *head,* are the same as names for corresponding parts of the human body.
(c) The term *unimodal,* when used in subparts C and I, refers to an acceleration-time curve which has only one prominent peak.
[38 FR 20451, Aug. 1, 1973, as amended at 42 FR 7152, Feb. 7, 1977; 44 FR 76530, Dec. 27, 1979; 56 FR 57836, Nov. 14, 1991]