49 CFR 1312.13 - Furnishing copies of tariff publications.
(a) Definitions. Subscriber, as used in this section, means any person (other than carrier participants in a tariff) that is voluntarily furnished, or that requests that it be furnished, one or more copies of a particular tariff with or without subsequent amendments or reissues of that tariff.
(b) Sending new publications to subscribers.
(1) The publishing carrier or agent shall send each newly-issued tariff, supplement, or loose-leaf page as requested to each subscriber by first class mail, or other means requested in writing by the subscriber.
(c) Certification. The letter of transmittal accompanying the copies filed with the Board shall contain the following certification:
(e) Notice of invalidation. If a publication is invalidated, the subscribers shall be notified.
(f) Alternative subscription services. The service described in this section must be available to any subscriber requesting it; however, the requirement to offer such service does not preclude the offering of different services to subscribers requesting those services.