23 CFR § 1340.4 - In general.

---
identifier: "/us/cfr/t23/s1340.4"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "23 CFR § 1340.4 - In general."
title_number: 23
title_name: "Highways"
section_number: "1340.4"
section_name: "In general."
chapter_name: "NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION"
part_number: "1340"
part_name: "UNIFORM CRITERIA FOR STATE OBSERVATIONAL SURVEYS OF SEAT BELT USE"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "23 U.S.C. 402; delegation of authority at 49 CFR 1.50."
regulatory_source: "76 FR 18056, Apr. 1, 2011, unless otherwise noted."
cfr_part: "1340"
---


# 1340.4 In general.

This subpart sets forth the minimum design requirements to be incorporated in surveys conducted under this part.