Ala. Code § 37-2-10

Every transportation company shall print and cause to be filed with the commission, and keep open to public inspection, tariffs or schedules of rates showing all rates, fares, charges, classifications, rules, regulations and practices for transportation subject to this chapter between points on its own route and between points on its own route and points on the route of any other such transportation company, when a through route and joint rate shall have been established, and all services in connection therewith, all privileges and facilities granted or allowed and all rules, regulations, or practices affecting such rate, fare, charge or classification or the value of the service thereunder. If no joint rate over the through route has been established, the several transportation companies in such through route shall print and cause to be filed with the commission, and keep open to public inspection, tariffs or schedules of rates showing the separately established rates, fares and charge applied to the through transportation. The tariffs or schedules of rates printed as aforesaid by any such transportation company shall plainly state the places between which property and passengers will be carried, and shall contain the classification of freight in force, and shall also state separately all terminal charges, storage charges, icing charges and all other charges which the commission may require, all privileges or facilities granted or allowed, any rules or regulations which in any wise change, affect or determine any part or the aggregate of such aforesaid rates, fares and charges, or the value of the service rendered to the passenger, shipper or consignee. The provisions of this section shall apply to all traffic, transportation and facilities defined in this article. Such rates, fares and charges shall be stated in terms of lawful money of the United States. The tariffs or schedules of rates required by this section shall be published, filed and posted in such form and manner, and in such places, and shall contain such information as the commission, by regulation, shall prescribe; and the commission is authorized to reject, prior to the effective date thereof, any tariff or schedule of rates filed with it which is not in consonance with this section and such regulation. Any tariff or schedule of rates so rejected by the commission shall be void and its use shall be unlawful.