49 CFR § 397.61 - Purpose and scope.

---
identifier: "/us/cfr/t49/s397.61"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "49 CFR § 397.61 - Purpose and scope."
title_number: 49
title_name: "Transportation"
section_number: "397.61"
section_name: "Purpose and scope."
chapter_name: "FEDERAL MOTOR CARRIER SAFETY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION"
subchapter_number: "B"
subchapter_name: "FEDERAL MOTOR CARRIER SAFETY REGULATIONS"
part_number: "397"
part_name: "TRANSPORTATION OF HAZARDOUS MATERIALS; DRIVING AND PARKING RULES"
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; 49 CFR 1.87. Subpart A also issued under 49 U.S.C. 5103, 31136, 31502, and 49 CFR 1.97. Subparts C, D, and E also issued under 49 U.S.C. 5112, 5125."
regulatory_source: "36 FR 4876, Mar. 13, 1971, unless otherwise noted."
cfr_part: "397"
---


# 397.61 Purpose and scope.

This subpart contains routing requirements and procedures that States and Indian tribes are required to follow if they establish, maintain, or enforce routing designations over which a non-radioactive hazardous material (NRHM) in a quantity which requires placarding may or may not be transported by a motor vehicle. It also provides regulations for motor carriers transporting placarded or marked NRHM and procedures for dispute resolutions regarding NRHM routing designations.