Md. Code, Agriculture § 10–1804

(a) The Department shall register each applicant who submits an application in accordance with § 10–1803 of this subtitle and issue each registrant a unique registration number and a certificate confirming registration.

(b) The Department shall require each registrant to:

(1) Carry the registration certificate containing the unique registration number when transporting waste kitchen grease; and

(2) Conspicuously display the registrant’s name on any vehicle used to transport waste kitchen grease.