Md. Code, Transportation § 18.5–108

(a) A peer–to–peer car sharing program may charge a shared vehicle driver a separately stated fee to recover the following costs incurred by the peer–to–peer car sharing program:

(1) Any concession fees paid to a government–owned or government–operated:

(i) Airport; or

(ii) Other entity; and

(2) Any other fee or charge imposed by a governmental entity.

(b) If a peer–to–peer car sharing program advertises the rate available for a shared motor vehicle in the State, the fees authorized under this section shall be clearly disclosed in the advertisement.