Md. Code, Courts and Judicial Proceedings § 3–2601

(a) In this subtitle the following words have the meanings indicated.

(b) (1) “Common carrier” means a person that is engaged in the public transportation of persons for hire by land.

(2) “Common carrier” includes:

(i) A car company, a motor vehicle company, an automobile company, or a motor bus company;

(ii) A railroad company, street railroad company, or sleeping car company; and

(iii) A transit company.

(3) “Common carrier” does not include any entity owned by the State or a local government.

(c) “Public infrastructure” means a bridge or highway owned, controlled, or maintained by the State or a county or municipal government.