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Maryland Code, Transportation § 22-611

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(a) In this section, “engine brake” means an add-on engine compression brake for diesel engines.

(b) A person may not operate a commercial motor vehicle equipped with an engine brake unless the engine brake is connected to a properly functioning exhaust muffler system in constant operation when the vehicle's ignition is engaged.

(c) A person may not disable the exhaust muffler system of a commercial motor vehicle that is equipped with an engine brake except to make a bona fide repair or replacement.

(d) A person convicted of a violation of this section is subject to:

(1) For a first offense, a fine of not less than $250 and not exceeding $1,000;  and

(2) For a second or subsequent offense, a fine of not less than $500 and not exceeding $1,000.

Cite this article: - Maryland Code, Transportation § 22-611 - last updated December 31, 2021 |

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