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Title 40

Displaying title 40, up to date as of 7/09/2026. Title 40 was last amended 7/09/2026.
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Title 40Protection of EnvironmentPart / Section
Chapter IEnvironmental Protection Agency1 – 1099
Subchapter GNoise Abatement Programs201 – 211
Part 205Transportation Equipment Noise Emission Controls205.1 – 205.174
Subpart AGeneral Provisions205.1 – 205.5-3
§ 205.1General applicability.
§ 205.2Definitions.
§ 205.3Number and gender.
§ 205.4Inspection and monitoring.
§ 205.5Exemptions.
§ 205.5-1Testing exemption.
§ 205.5-2National security exemptions.
§ 205.5-3Export exemptions.
Subpart BMedium and Heavy Trucks205.50 – 205.59
Subpart C [Reserved]
Subpart DMotorcycles205.150 – 205.163
Appendix I to Subparts D-E of Part 205
Motorcycle Noise Emission Test Procedures [Note]
Subpart EMotorcycle Exhaust Systems205.164 – 205.174