StacksVerified U.S. regulatory reference

40 CFR §202.22

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
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.