Idaho Code § 61-304
Every common carrier shall file with the commission and shall print and keep open to the public inspection schedules showing the rates, fares, charge and classification for the transportation between termini within this state of persons and property from each point upon its route to all other points thereon and from all points upon its route to all points upon every other route leased, operated or controlled by it; and from each point on its route or upon any route leased, operated or controlled by it to all points upon the route of any other common carrier, whenever a through route and a joint rate shall have been established or ordered between any two (2) such points. If no joint rate over a through route has been established, the schedules of the several carriers in such through route shall show the separately established rates, fares, charges and classifications applicable to the through transportation.
The schedule printed as aforesaid shall plainly state the places between which such property and persons will be carried, and shall also contain the classification of passengers or property in force, and shall also state separately all terminal charges, storage charges, icing charges, and all other charges which the commission may require to be stated, all privileges or facilities granted or allowed, and all rules or regulations which may in any wise change, affect or determine any part, or the aggregate of, such rates, fares, charges and classifications, or the value of the various services rendered to the passenger, shipper or consignee. Subject to such rules and regulations as the commission may prescribe, such schedules shall be plainly printed in large type and a copy thereof shall be kept by every such carrier readily accessible to and for inspection by the public in every station or office of such carrier where passengers or property are respectively received for transportation when such station or office is in charge of an agent, and in every station or office of such carrier where passenger tickets or tickets for sleeping, parlor car or other train accommodations are sold or bills of lading or waybills or receipts for property issued. Any or all of such schedules kept as aforesaid shall be immediately produced by such carrier for inspection upon the demand of any person.
A notice printed in bold type and stating that such schedules are on file with the agent and open to inspection by any person, and that the agent will assist any person to determine from such schedules any rates, fares, rules, or regulations in force, shall be kept posted by the carrier in two (2) public and conspicuous places in every such station or office.
The form of every such schedule shall be prescribed by the commission and shall conform in the case of common carriers subject to the act of congress entitled "An act to regulate commerce," approved February 4, 1887, and the acts amendatory thereof and supplementary thereto, as nearly as may be to the form of schedule prescribed by the interstate commerce commission under this act. When the schedules and classifications required by the said interstate commerce commission contain in whole or in part the information required by the provisions of this section, the posting, publishing and filing of a copy or copies of such schedules and classifications required by the interstate commerce commission shall be deemed a compliance with the requirements of this section in so far as such schedules and classifications contain the information required by this section, and any additional or different information may be posted, published and filed in a supplementary schedule.
Idaho Code § 61-304