§ 22-609
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/md/transportation/22-609A research copy — for the controlling text, always check the official state or federal source. Not legal advice.
§22–609.
(a)A person may not modify the exhaust system or any other noise abatement device of a motor vehicle driven or to be driven on any highway in this State in such a way that the noise emitted by the vehicle exceeds that emitted by the vehicle as originally manufactured.
(b)A person may not drive on any highway in this State a motor vehicle with an exhaust system or noise abatement device modified in a way prohibited by subsection
(a)of this section.