40 CFR § 202.22 - Visual exhaust system inspection.

---
identifier: "/us/cfr/t40/s202.22"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 202.22 - Visual exhaust system inspection."
title_number: 40
title_name: "Protection of Environment"
section_number: "202.22"
section_name: "Visual exhaust system inspection."
chapter_name: "ENVIRONMENTAL PROTECTION AGENCY"
subchapter_number: "G"
subchapter_name: "NOISE ABATEMENT PROGRAMS"
part_number: "202"
part_name: "MOTOR CARRIERS ENGAGED IN INTERSTATE COMMERCE"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "Sec. 18, 36 Stat. 1249, 42 U.S.C. 4917(a)."
cfr_part: "202"
---


# 202.22 Visual exhaust system inspection.

No motor carrier subject to these regulations shall operate any motor vehicle of a type to which this regulation is applicable unless the exhaust system of such vehicle is (a) free from defects which affect sound reduction; (b) equipped with a muffler or other noise dissipative device; and (c) not equipped with any cut-out, bypass, or similar device.