When truck trailers are placed on rail cars to travel long distances,the process is known as leapfrogging.

Name: When truck trailers are placed on rail cars to travel long distances,the process is known as leapfrogging.
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Leapfrogging refers to the process of moving a shipment by a combination of truck and rail transport, where trucks carry the shipment to a nearby rail yard and then rail cars take over for the long-distance portion of the journey.

When Truck Trailers Are Placed on Rail Cars to Travel