69-12-504. Procedure to revise rate schedule. (1) No motor carrier shall change or revise any rate, fare, charge, classification, or rule of service contained in its schedule without first obtaining approval therefor from the commission. Such changes or revisions shall be made by filing with the commission the tariff sheet or sheets containing such changes or revisions, plainly stating the changes or revisions to be made, and by submitting at the same time testimony and exhibits supporting the requested change or revision and prepared by the motor carrier. Additional testimony or exhibits may be submitted before or during the hearing provided for in 69-12-505 and may be submitted after the hearing with the approval of the commission. The public shall be provided with such notice of the proposed changes or revisions as the commission shall, by rule, require.

(2) The tariff sheets containing changes or revisions shall be filed with the commission at least 45 days before the proposed effective date. The change or revision shall be effective on the stated effective date unless disallowed or suspended by the commission prior to this date. However, the commission may, for good cause, allow any change or revision to become effective on less than 45 days' notice.