Air moves typically include at least one leg of which type?

In the context of air transportation, the concept of "cartage" is crucial because it refers to the transportation of goods by road, typically involving short distances. When goods are shipped via air, they often need to be transported to and from airports, which is where cartage comes into play. This leg of the transportation involves moving shipments to the air cargo facility from their origin and then from the destination airport to the final delivery location.

The other options, while relevant to transportation, do not typically apply to air moves. For instance, ocean transport pertains to shipments that travel via sea, rail refers to transportation by trains, and drayage generally involves the transport of goods over short distances by trucks or carts but is more closely associated with intermodal transportation. In air freight, cartage specifically addresses the necessary trucking component to complete the air shipment process.