49 C.F.R. § 1312.16 Substitution of service.
Title 49 - Transportation
If a water or motor carrier (hereafter referred to as Carrier A) desires to have the option of substituting the services of a carrier of a different transportation mode (hereafter referred to as Carrier B) for part of its movement of a shipment, it may do so if: (a) The shipment moves on the bill of lading that would be used if Carrier A were performing the service; (b) Carrier A assumes the responsibility for the lading while it is in the possession of Carrier B; and (c) Movement of the lading has been made prior to, or will be made subsequent to, the service performed by Carrier B.
Title 49: Transportation
PART 1312—REGULATIONS FOR THE PUBLICATION, POSTING AND FILING OF TARIFFS FOR THE TRANSPORTATION OF PROPERTY BY OR WITH A WATER CARRIER IN NONCONTIGUOUS DOMESTIC TRADE
§ 1312.16 Substitution of service.