Maryland Transportation Section 25-205
§ 25-205.
  (a)   This section applies if:
    (1)   The identity of the last registered owner of an abandoned vehicle cannot be determined;
    (2)   The registration of the vehicle gives no address for the owner;
    (3)   It is impossible to determine with reasonable certainty the identity and address of each secured party; or
    (4)   The certified mail notice required by § 25-204 of this subtitle is returned as undeliverable.
  (b)   Under one of the conditions described in subsection (a) of this section, a police department that takes an abandoned vehicle into custody shall give the required notice by posting a notice complying with the provisions of subsection (c) of this section in the circuit court of the county where the abandoned vehicle was found.
  (c)   The notice:
    (1)   May contain multiple listings of abandoned vehicles;
    (2)   Shall contain the information required by § 25-204 of this subtitle; and
    (3)   Shall be posted:
      (i)   Within 15 days of the taking into custody of the vehicle; or
      (ii)   If the notice by posting under this section is made because of the return as undeliverable of a prior notice by certified mail, return receipt requested, bearing a postmark from the United States Postal Service, within 7 days of the return of that prior notice.