Maryland Transportation Section 22-401.1

      A vehicle from which ice cream products and similar products are sold may be equipped with, and the driver of the vehicle may use, a bell not exceeding 3 1/2 inches in diameter, or a set of bells, provided that no bell or set of bells may be:

            (1)      Operated by mechanical or electrical means or by any means other than manually;

            (2)      Amplified by any electrical or electronic means;

            (3)      Capable of emitting sound audible under normal conditions from a distance of more than 400 feet;

            (4)      Used for any purpose between the hours of 10 o'clock p.m. and 8 o'clock a.m.; or

            (5)      Used as an ordinary warning signal at any time.