(a) No contract carrier by motor vehicle shall demand, charge, or collect a less compensation for the transportation than the charges filed in accordance with § 23-13-245, as affected by any rule or practice so filed, or may be prescribed by the Arkansas Department of Transportation from time to time.
(b) It shall be unlawful for any contract carrier, by the furnishing of special services, facilities, or privileges, or by any other device whatsoever, to charge, accept, or receive less than the minimum charges so filed or prescribed.
(c) However, any contract carrier, or any class or group thereof, may apply to the department for the relief from the provisions of § 23-13-245, and the department after hearing may grant such relief to such extent and for such time, and in such manner as in its judgment is consistent with the public interest and the transportation policy declared in this subchapter.