(a) It shall be the duty of every contract carrier by motor vehicle to establish and observe reasonable minimum rates and charges for any service rendered or to be rendered in the transportation of passengers or property or in connection therewith and to establish and observe reasonable minimum rates, fares, and charges.
(b) It shall be the duty of every contract carrier by motor vehicle to file with the Arkansas Department of Transportation and to publish and keep open for public inspection, in the form and manner prescribed by the department, schedules containing the minimum rates or charges of the carrier actually maintained and charged for the transportation of passengers or property and any rule or practice affecting such rates or charges and the value of the service thereunder.
(c) No contract carrier, unless otherwise provided by this subchapter, shall engage in the transportation of passengers or property unless the minimum charges for the transportation by the carrier have been published, filed, and posted in accordance with the provisions of this subchapter.