Md. Code, Transportation § 8–750

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

(b) “Bus passenger shelter” means a shelter located at a designated transit bus stop for the convenience of passengers of a public transportation system owned and operated by a governmental unit, public authority, or transit operator.

(c) “Commercial advertising sign” means any sign, display, or device designed, intended, or used to encourage or promote the purchase or use of goods or services.