Maryland Code, Transportation § 14-104

(a) A person may not willfully damage or tamper with any vehicle without the consent of its owner.

(b) A person may not drop or throw stones or other objects at any vehicle or at occupants of a vehicle.

(c) A person may not, with intent to commit any malicious mischief, damage, injury, or crime, climb into or on any vehicle, whether it is in motion or at rest.

(d) A person may not, with intent to commit any malicious mischief, damage, injury, or crime, manipulate or attempt to manipulate any of the levers, starting mechanism, brakes, or other mechanism or device of any vehicle while the vehicle is at rest and unattended.

(e) A person convicted of a violation of this section is subject to imprisonment not exceeding 2 months or a fine not exceeding $500 or both.