---
kind: "unit"
title: "49"
title_heading: "Transportation"
key: "stVI/ptB/ch311"
level: "chapter"
label: "Chapter 311"
heading: "Commercial Motor Vehicle Safety"
release: "119-102"
date: "2026-07-12"
url: "https://uscodex.org/usc/49/stVI-ptB-ch311"
sections_count: 38
---

# Chapter 311 — Commercial Motor Vehicle Safety

Title 49 — Transportation › Subtitle VI — Motor Vehicle and Driver Programs › Part B — Commercial

## Contents

- [Subchapter I — General Authority and State Grants](/usc/49/stVI-ptB-ch311-schI.md)
- [Subchapter II — Length and Width Limitations](/usc/49/stVI-ptB-ch311-schII.md)
- [Subchapter III — Safety Regulation](/usc/49/stVI-ptB-ch311-schIII.md)
- [Subchapter IV — Miscellaneous](/usc/49/stVI-ptB-ch311-schIV.md)