Intermodal operation in which highway trailers and containers ride on railroad flatcars,thereby combining the long-haul capacity of the train with the door-to-door flexibility of the truck is called a _____ service.
A)piggyback
B)birdyback
C)fishyback
D)horseback

Question

Quizplus · Accepted Answer

The intermodal operation described is known as piggyback service. The term "piggyback" comes from the visual image of a piggyback ride, with the trailer or container riding on the back of the flatcar like a person on another's back. Birdyback, fishyback, and horseback are not commonly used industry terms.

Intermodal Operation in Which Highway Trailers and Containers Ride on Railroad