---
kind: "unit"
title: "49"
title_heading: "Transportation"
key: "subtB/chV/part551"
level: "part"
label: "Part 551"
heading: "Procedural Rules"
release: "ecfr-current"
date: "2026-08-27"
url: "https://uscodex.org/cfr/49/subtB-chV-part551"
sections_count: 29
---

# Part 551 — Procedural Rules

Title 49 C.F.R. — Transportation › Subtitle B — Other Regulations Relating to Transportation › Chapter V — National Highway Traffic Safety Administration, Department of Transportation

## Contents

- [Subpart A — General](/cfr/49/subtB-chV-part551-subpartA.md)
- [Subpart B — Subpart B [Reserved]](/cfr/49/subtB-chV-part551-subpartB.md)
- [Subpart C — Submittals in Writing](/cfr/49/subtB-chV-part551-subpartC.md)
- [Subpart D — Service of Process on Foreign Manufacturers and Importers](/cfr/49/subtB-chV-part551-subpartD.md)