The principal difference in costs among trucks, railroads, planes, ships, and pipelines is directly related to the safety of delivery.

Question

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The principal difference in costs among trucks, railroads, planes, ships, and pipelines is not directly related to the safety of delivery, but rather factors such as distance, speed, volume of goods, infrastructure, and fuel costs. Safety is important for all modes of transportation, but it is not the main driver of cost differences.

The Principal Difference in Costs Among Trucks, Railroads, Planes, Ships