23 CFR § 1340.1 - Purpose.

---
identifier: "/us/cfr/t23/s1340.1"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "23 CFR § 1340.1 - Purpose."
title_number: 23
title_name: "Highways"
section_number: "1340.1"
section_name: "Purpose."
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"
---


# 1340.1 Purpose.

This part establishes uniform criteria for State surveys of seat belt use conducted under 23 U.S.C. 402, procedures for NHTSA approval of survey designs, and administrative requirements relating to State seat belt surveys.