O.C.G.A. § 46-9-21 (2019)

(a) When any schedule has been made or revised as provided in Code Section 46-9-20, it shall be the duty of the commission to give notice of such new schedule or of any amendment or revision, by means of circulars, tariff publications, its annual reports, or in such other manner and form as it deems advisable or necessary. After such notice is given, it shall be the duty of all railroad companies affected by the new schedule to post at all of their respective stations, in a conspicuous place, a copy of the schedule for the information of the public, provided that the schedules thus prepared shall not be taken as evidence as provided in Code Section 46-9-20 until schedules have been prepared and published as provided in this Code section.

(b) All such schedules purporting to have been printed and published by the commission as provided in this Code section shall be received and held in all such actions as prima facie the schedules of the commission, without any further proof other than the production of the schedules desired to be used as evidence, together with a certificate of the commission that the same are true copies of the schedules prepared by it for the railroad company therein named and that the same have been duly published as required by law.