A common carrier is . Unselected an agent who serves as an intermediary between an organization shipping a product and the actual carrier, typically on international shipments Unselected a transportation service provider that handles shipments for other firms based on long-term agreements or contracts Unselected a service firm that handles all of the logistics requirements for other companies Unselected a transportation service provider that handles shipments on a case-by-case basis, without the need for long-term agreements or contracts