---
kind: "unit"
title: "40"
title_heading: "Protection of Environment"
key: "chI/subchG/part201"
level: "part"
label: "Part 201"
heading: "Noise Emission Standards for Transportation Equipment; Interstate Rail Carriers"
release: "ecfr-current"
date: "2026-08-27"
url: "https://uscodex.org/cfr/40/chI-subchG-part201"
sections_count: 17
---

# Part 201 — Noise Emission Standards for Transportation Equipment; Interstate Rail Carriers

Title 40 C.F.R. — Protection of Environment › Chapter I — Environmental Protection Agency › Subchapter G — Noise Abatement Programs

## Contents

- [Subpart A — General Provisions](/cfr/40/chI-subchG-part201-subpartA.md)
- [Subpart B — Interstate Rail Carrier Operations Standards](/cfr/40/chI-subchG-part201-subpartB.md)
- [Subpart C — Measurement Criteria](/cfr/40/chI-subchG-part201-subpartC.md)