---
kind: "unit"
title: "49"
title_heading: "Transportation"
key: "subtB"
level: "subtitle"
label: "Subtitle B"
heading: "Other Regulations Relating to Transportation"
release: "ecfr-current"
date: "2026-08-27"
url: "https://uscodex.org/cfr/49/subtB"
sections_count: 7690
---

# Subtitle B — Other Regulations Relating to Transportation

Title 49 C.F.R. — Transportation

## Contents

- [Chapter I — Pipeline and Hazardous Materials Safety Administration, Department of Transportation](/cfr/49/subtB-chI.md)
- [Chapter II — Federal Railroad Administration, Department of Transportation](/cfr/49/subtB-chII.md)
- [Chapter III — Federal Motor Carrier Safety Administration, Department of Transportation](/cfr/49/subtB-chIII.md)
- [Chapter IV — Coast Guard, Department of Homeland Security](/cfr/49/subtB-chIV.md)
- [Chapter V — National Highway Traffic Safety Administration, Department of Transportation](/cfr/49/subtB-chV.md)
- [Chapter VI — Federal Transit Administration, Department of Transportation](/cfr/49/subtB-chVI.md)
- [Chapter VII — National Railroad Passenger Corporation (amtrak)](/cfr/49/subtB-chVII.md)
- [Chapter VIII — National Transportation Safety Board](/cfr/49/subtB-chVIII.md)
- [Chapter X — Surface Transportation Board](/cfr/49/subtB-chX.md)
- [Chapter 0 — Research and Innovative Technology Administration, Department of Transportation [reserved]](/cfr/49/subtB-ch0.md)
- [Chapter XII — Transportation Security Administration, Department of Homeland Security](/cfr/49/subtB-chXII.md)