---
kind: "unit"
title: "6"
title_heading: "Domestic Security"
key: "ch4/schIV"
level: "subchapter"
label: "Subchapter IV"
heading: "Surface Transportation Security"
release: "119-102"
date: "2026-07-12"
url: "https://uscodex.org/usc/6/ch4-schIV"
sections_count: 32
---

# Subchapter IV — Surface Transportation Security

Title 6 — Domestic Security › Chapter 4 — Transportation Security

## Contents

- [Part A — General Provisions](/usc/6/ch4-schIV-ptA.md)
- [Part B — Railroad Security](/usc/6/ch4-schIV-ptB.md)
- [Part C — Over-the-Road Bus and Trucking Security](/usc/6/ch4-schIV-ptC.md)
- [Part D — Hazardous Material and Pipeline Security](/usc/6/ch4-schIV-ptD.md)