Maryland Statutes
Part VII - Transportation of Controlled Hazardous Substances
Section 7-249 - Restrictions on Transporting Controlled Hazardous Substances

(a)    A person may not transport any controlled hazardous substance from any source in this State or to any controlled hazardous substance facility in this State unless:
        (1)    The person holds a hauler certificate; and
        (2)    A vehicle certificate has been issued for the transporting vehicle.
    (b)    This section does not apply to the transportation of any controlled hazardous substance that is:
        (1)    Used for residential purposes; or
        (2)    Regulated by the State Department of Agriculture.