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passenger mile

or passenger-mile

a unit of measurement, consisting of one mile traveled by a passenger, that airlines, railroads, and other public transportation facilities use in recording volume of traffic.
Origin of passenger mile
Related forms
passenger mileage, noun Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for passenger-mile
Historical Examples
  • A passenger-mile, as we know already, is one of the units in estimating the traffic revenue of a railroad.

    The Railroad Problem Edward Hungerford
  • The passenger-mile—representing the progress of one train over one mile of track—is the unit of that form of traffic.

    The Railroad Problem Edward Hungerford

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