Ohio Revised Code Title XLIX. Public Utilities § 4905.81

(A) Supervise and regulate each motor carrier;

(B) Regulate the safety of operation of each motor carrier, and of each intermodal equipment provider as defined in section 4923.041 of the Revised Code;

(C) Adopt reasonable safety rules applicable to the highway transportation of persons or property in interstate and intrastate commerce by motor carriers;

(D) Adopt safety rules applicable to the transportation and offering for transportation of hazardous materials in interstate and intrastate commerce by motor carriers. The rules shall not be incompatible with the requirements of the United States department of transportation.

(E) Require the filing of reports and other data by motor carriers;

(F) Adopt reasonable rules for the administration and enforcement of this chapter and Chapters 4901., 4903., 4907., 4909., 4921., and 4923. of the Revised Code applying to each motor carrier in this state;

(G) Supervise and regulate motor carriers in all other matters affecting the relationship between those carriers and the public to the exclusion of all local authorities, except as provided in this section. The commission, in the exercise of the jurisdiction conferred upon it by this chapter and Chapters 4901., 4903., 4907., 4909., 4921., and 4923. of the Revised Code, may adopt rules affecting motor carriers, notwithstanding the provisions of any ordinance, resolution, license, or permit enacted, adopted, or granted by any township, municipal corporation, municipal corporation and county, or county. In case of conflict between any such ordinance, resolution, license, or permit, the order or rule of the commission shall prevail. Local subdivisions may adopt reasonable local police rules within their respective boundaries not inconsistent with those chapters and rules adopted under them.

The commission has jurisdiction to receive, hear, and determine as a question of fact, upon complaint of any party or upon its own motion, and upon not less than fifteen days' notice of the time and place of the hearing and the matter to be heard, whether any corporation, company, association, joint-stock association, person, firm, or copartnership, or their lessees, legal or personal representatives, trustees, or receivers or trustees appointed by any court, is engaged as a motor carrier. The finding of the commission on such a question is a final order that may be reviewed as provided in section 4923.15 of the Revised Code.