49 CFR § 512.4 - When requesting confidentiality, what should I submit?

---
identifier: "/us/cfr/t49/s512.4"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "49 CFR § 512.4 - When requesting confidentiality, what should I submit?"
title_number: 49
title_name: "Transportation"
section_number: "512.4"
section_name: "When requesting confidentiality, what should I submit?"
chapter_name: "NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION"
part_number: "512"
part_name: "CONFIDENTIAL BUSINESS INFORMATION"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "49 U.S.C. 322; 5 U.S.C. 552; 49 U.S.C. 30166; 49 U.S.C. 30167; 49 U.S.C. 32307; 49 U.S.C. 32505; 49 U.S.C. 32708; 49 U.S.C. 32910; 49 U.S.C. 33116; delegation of authority at 49 CFR 1.50."
regulatory_source: "68 FR 44228, July 28, 2003, unless otherwise noted."
cfr_part: "512"
---


# 512.4 When requesting confidentiality, what should I submit?

Any person submitting information to NHTSA, other than information in a class identified in appendix C of this Part, and requesting that the information be withheld from public disclosure pursuant to 5 U.S.C. 552(b) shall submit the following:

(a) The materials for which confidentiality is being requested, in conformance with §§ 512.5, 512.6, and 512.7 of this part;

(b) The Certificate, in the form set out in appendix A to this part;

(c) Supporting information, in conformance with § 512.8; and

(d) Any request for an extension of time, made in accordance with § 512.11.