When groups of shippers pool their shipments together, what is this called?
A. Containerization
B. Piggyback service
C. Pool car service
D. Diversion in transit
E. Birdyback service
Answer: (C) To offset the shortcomings of low speed and high cost, and still get business from small shippers, railroads allow groups of shippers to pool like goods into a full car. This is termed pool car service. Containerization (A) is incorrect. It refers to the grouping of individual items into economical shipping quantities. Piggyback service (B) refers to the loading of truck trailers onto railroad cars for transportation and is incorrect. Diversion in transit (D) is also incorrect. This refers to the redirection of carloads already in transit. Birdyback service (E) refers to loading trucks or trailers onto airplanes for faster transport to their place of destination. This answer is also incorrect.