(a)
(1) Common carriers of property by motor vehicle may establish reasonable through routes and joint rates, charges, and classifications with other such carriers or with common carriers by railroad or express or water.
(2) Common carriers of passengers by motor vehicle may establish reasonable through routes and joint rates, fares, or charges with common carriers by railroad or water.
(b) In case of joint rates, fares, or charges, it shall be the duty of the carriers parties thereto to establish just and reasonable rules and practices in connection therewith and to establish just, reasonable, and equitable divisions thereof as between the carriers participating therein which shall not unduly prefer or prejudice any participating carriers.
(c)
(1) Whenever, after hearing, upon complaint or upon its own initiative the Arkansas Department of Transportation is of the opinion that the divisions of joint rates, fares, or charges, applicable to the transportation of passengers or property by common carriers by motor vehicle, or by such carriers in conjunction with common carriers by railroad, express, or water, are or will be unjust, unreasonable, inequitable, or unduly preferential or prejudicial as between the carriers parties thereto, whether agreed upon by such carriers, or any of them, or otherwise established, the department shall by order prescribe the just, reasonable, and equitable divisions thereof to be received by the several carriers.
(2) In cases where the joint rate, fare, or charge was established pursuant to a finding or order of the department, the department may also by order determine what would have been the just, reasonable, and equitable divisions thereof to be received by the several carriers and require adjustment to be made in accordance therewith.
(3) The order of the department may require the adjustment of divisions between the carriers, in accordance with the order, from the date of filing the complaint or entry of order of investigation or such other date subsequent as the department finds justified. In the case of joint rates described by the department, the order as to divisions may be made effective as a part of the original order.