An agreement between a carrier and another party for transportation. The other party will normally be the seller (or seller´s agent) with freight prepaid shipments, or the buyer (or buyer´s agent) for freight collect shipments. Contract of carriage are normally expressed by transportation document that the carrier signs or issues (air waybill, truck bill of lading, marine bill of lading, sea waybill, multimodal transport document, etc.). Since carriers will normally take instructions from the party with which they contract carriage, carrier selection can be an important consideration for sellers and buyers alike. Model of Logistics Services Contract.