---
kind: "unit"
title: "49"
title_heading: "Transportation"
key: "subtB/chXII/subchB"
level: "subchap"
label: "Subchapter B"
heading: "Security Rules for All Modes of Transportation"
release: "ecfr-current"
date: "2026-08-27"
url: "https://uscodex.org/cfr/49/subtB-chXII-subchB"
sections_count: 10
---

# Subchapter B — Security Rules for All Modes of Transportation

Title 49 C.F.R. — Transportation › Subtitle B — Other Regulations Relating to Transportation › Chapter XII — Transportation Security Administration, Department of Homeland Security

## Contents

- [Part 1520 — Protection of Sensitive Security Information](/cfr/49/subtB-chXII-subchB-part1520.md)