This X12 Transaction Set contains the format and establishes the data contents of the Motor Carrier Tariff Information Transaction Set (218) for use within the context of an Electronic Data Interchange (EDI) environment.  The transaction set can be used to provide for the interchange of processible data extracted from a motor carrier’s tariff or pricing information database.  It can be used by any producer of motor carrier tariffs or rates to transmit tariff and rate information to shippers or other interested parties.  This transaction set is not intended to transmit a complete, legal tariff; rather, it is intended to provide rate information upon the request of shippers or other interested parties.  Users of this data should continue to rely on legally filed tariffs as the basis of the legal agreement between themselves and their carriers.