(a)    This section applies only to:
        (1)    Allegany County;
        (2)    Baltimore County;
        (3)    Calvert County;
        (4)    Carroll County;
        (5)    Cecil County;
        (6)    Frederick County;
        (7)    Garrett County;
        (8)    Harford County;
        (9)    Howard County;
        (10)    Montgomery County;
        (11)    Prince George’s County;
        (12)    St. Mary’s County; and
        (13)    Washington County.
    (b)    (1)    Except as provided in paragraph (2) of this subsection, the governing body of a county may adopt and enforce rules and regulations relating to the maximum size and weight of motor vehicles that may be operated on county roads.
        (2)    The governing body of a county may not set the maximum weight under paragraph (1) of this subsection at a weight greater than the maximum allowed by the public general laws of the State.
        (3)    Rules and regulations adopted under this subsection shall:
            (i)    have a reasonable relationship to the construction, use, and character of the road; and
            (ii)    be designed to assure the continued safety and good condition of the road.
    (c)    A person who violates a rule or regulation adopted under this section is guilty of a misdemeanor and on conviction is subject to imprisonment not exceeding 60 days or a fine not exceeding $1,000.
Structure Maryland Statutes
Title 12 - Other Powers of Counties -- Generally
Part III - Specific County Provisions
Section 12-526 - "Road" Defined
Section 12-527 - Size and Weight of Vehicles in Selected Counties
Section 12-528 - Maintenance of Private Roads by Selected Counties
Section 12-529 - Road Construction Districts in Calvert County
Section 12-531 - Regulation of Roads in Carroll County
Section 12-532 - Building and Repairing Roads in Cecil County
Section 12-533 - Building and Maintenance of County Roads in Charles County
Section 12-534 - Vehicle Weight on County Roads in Charles County
Section 12-535 - Emergency Snow Routes in Garrett County and St. Mary's County
Section 12-536 - Advertising Signs in Garrett County
Section 12-537 - Outdoor Advertising in Harford County
Section 12-538 - Regulation of Roads and Other Public Ways and Facilities in St. Mary's County