(1) The commission shall give written notice, where required by statute, by first class mail of a hearing at least 20 days in advance thereof to the petitioner, to other parties of record, to parties required by statute to be notified and to such other additional persons as the commission shall direct. The commission shall give notice to the general public by means of legal publication in a newspaper having general circulation in the area affected by the filed pleadings or documents.

(2) Notice of motor carrier tariff establishments, revisions or changes shall be given pursuant to 69-12-504 , MCA.

(3) Notice of motor carrier applications for a certificate of public convenience and necessary shall be given pursuant to 69-12-322 , MCA.