Maryland Criminal Law Section 6-302

      (a)      A person may not willfully throw, shoot, or propel a rock, brick, piece of iron, steel, or other similar metal, or a dangerous missile at or into a vehicle or other means of transportation that is occupied by an individual.

      (b)      A person who violates this section is guilty of a misdemeanor and on conviction is subject to imprisonment not exceeding 1 year or a fine not exceeding $500 or both.