Maryland Code, Local Government § 13-312

(1) implement this part;

(2) protect against persons who attempt to avoid the requirements of this part or any other law or regulation relating to transient vendors;

(3) require persons engaging in business to prove that they are not transient vendors; or

(4) require a person engaging in business to post the bond or other security required by this part until the person has engaged in business for 1 year and has paid all taxes due as a result of engaging in that business.