Maryland Code, Labor and Employment § 5.5-116

(a) If, after an inspection or investigation, the Commissioner or authorized representative of the Commissioner is of the opinion that a railroad company has violated this title or a regulation or health and safety standard adopted or order issued to carry out this title, the Commissioner or authorized representative of the Commissioner shall, with reasonable promptness, issue a citation to the railroad company.

(b) Each citation under this section shall:

(c) In accordance with any regulation that the Commissioner adopts to carry out this title, a railroad company that is issued a citation shall prominently post the citation or a copy of it as set forth in regulations adopted by the Commissioner.

(d) No citation may be issued after 6 months after the occurrence of a violation.