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Maryland Code § 21-804. Minimum speed regulation.
(a) Slow speed impeding traffic prohibited.- Unless reduced speed is necessary for the safe operation of the vehicle or otherwise is in compliance with law, a person may not willfully drive a motor vehicle at such a slow speed as to impede the normal and reasonable movement of traffic.
(b) Establishment of minimum speed limits by State or local authorities.-
(1) If, on the basis of an engineering and traffic investigation, the State Highway Administration or a local authority determines that slow speeds on any part of a highway in its jurisdiction impede the normal and reasonable movement of traffic, the State Highway Administration or the local authority may establish a minimum speed limit for that part of the highway.
(2) Unless reduced speed is necessary for the safe operation of the vehicle or otherwise is in compliance with law, a person may not drive a vehicle below a minimum speed limit established under this subsection.
(3) A minimum speed limit established under this subsection is effective when posted on appropriate signs giving notice of the limit.
(c) Class A (passenger) or Class M (multipurpose) vehicle.- A person may not drive a class A (passenger) or class M (multipurpose) vehicle on a highway if the maximum speed capability of the vehicle does not exceed the posted maximum speed limit for the highway by at least 5 miles per hour.
The fine is about $200 with court costs and it is one point on your MD license. See: MD Fines.
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