---
kind: "unit"
title: "49"
title_heading: "Transportation"
key: "subtB/chIII/subchB/part397"
level: "part"
label: "Part 397"
heading: "Transportation of Hazardous Materials; Driving and Parking Rules"
release: "ecfr-current"
date: "2026-08-27"
url: "https://uscodex.org/cfr/49/subtB-chIII-subchB-part397"
sections_count: 35
---

# Part 397 — Transportation of Hazardous Materials; Driving and Parking Rules

Title 49 C.F.R. — Transportation › Subtitle B — Other Regulations Relating to Transportation › Chapter III — Federal Motor Carrier Safety Administration, Department of Transportation › Subchapter B — Federal Motor Carrier Safety Regulations

## Contents

- [Subpart A — General](/cfr/49/subtB-chIII-subchB-part397-subpartA.md)
- [Subpart B — Subpart B [Reserved]](/cfr/49/subtB-chIII-subchB-part397-subpartB.md)
- [Subpart C — Routing of Non-Radioactive Hazardous Materials](/cfr/49/subtB-chIII-subchB-part397-subpartC.md)
- [Subpart D — Routing of Class 7 (Radioactive) Materials](/cfr/49/subtB-chIII-subchB-part397-subpartD.md)
- [Subpart E — Preemption Procedures](/cfr/49/subtB-chIII-subchB-part397-subpartE.md)