California Code, Public Utilities Code - PUC § 486

(a) Every common carrier shall file with the commission and shall print and keep open to the public inspection schedules showing the rates, fares, charges, and classifications 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 each point 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 has been established or ordered between any two 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.

(b) Subdivision (a) is not applicable to network railroad transportation.