1. After original assessments, adjustments and equalization by the commission have been completed, each freight line company interested therein shall be promptly notified by the action of the commission and may apply for a review of the original assessment. The commission shall grant and hold such review and fix the date thereof. Such review may be by whatever procedures decided upon by the parties and may include, but not limited to, a formal or informal hearing, the presentation of affidavits and documentary evidence, and the presentation of legal arguments or briefs. All affidavits, documentary evidence and other factual evidence not presented at a formal hearing shall be duly sworn to and verified. In the event the parties cannot agree to the procedures to be followed, a formal hearing shall be held at which the freight line company seeking review shall have the burden of establishing the correct assessment, adjustment and equalization pursuant to section 138.420. A record shall be kept of all matters submitted in review of an original assessment.

2. If, after such review and consideration of the facts, the commission is of the opinion that the original decision or any part thereof should be changed, the commission may change or modify the same.

3. Any freight line company aggrieved by the decision of the commission may, if it has participated in a review under this section, seek review as provided in chapter 536.