Maryland Statutes
Subtitle 12 - Operation of Bicycles and Play Vehicles
Section 21-1209 - Throwing Object at Bicycle, Epamd, or Motor Scooter

(a)    Notwithstanding any other provision of this title, the driver of a vehicle shall:
        (1)    Exercise due care to avoid colliding with any bicycle, EPAMD, or motor scooter being ridden by a person; and
        (2)    When overtaking a bicycle, an EPAMD, or a motor scooter, pass safely at a distance of not less than 3 feet, unless, at the time:
            (i)    The bicycle, EPAMD, or motor scooter rider fails to operate the vehicle in conformance with § 21–1205(a) of this subtitle (“Riding to right side of roadway”) or § 21–1205.1(b) of this subtitle (“Roadway with bike lane or shoulder paved to smooth surface”);
            (ii)    A passing clearance of less than 3 feet is caused solely by the bicycle, EPAMD, or motor scooter rider failing to maintain a steady course; or
            (iii)    The highway on which the vehicle is being driven is not wide enough to lawfully pass the bicycle, EPAMD, or motor scooter at a distance of at least 3 feet.
    (b)    A person may not throw any object at or in the direction of any person riding a bicycle, an EPAMD, or a motor scooter.
    (c)    A person may not open the door of any motor vehicle with intent to strike, injure, or interfere with any person riding a bicycle, an EPAMD, or a motor scooter.
    (d)    Unless otherwise specified in this title, the driver of a vehicle shall yield the right–of–way to a person who is lawfully riding a bicycle, an EPAMD, or a motor scooter in a designated bike lane or shoulder if the driver of the vehicle is about to enter or cross the designated bike lane or shoulder.