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May 18, 2008
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APTA > Industry Information > Transit Statistics > Public Transportation Ridership Statistics  

Passenger Definitions

Unlinked Passenger Trips is the number of passengers who board public transportation vehicles. Passengers are counted each time they board vehicles no matter how many vehicles they use to travel from their origin to their destination.

Passenger Miles is the cumulative sum of the distances ridden by each passenger.

Average Trip Length is the average distance ridden for an unlinked passenger trip by time period (weekday, Saturday, Sunday) computed as passenger miles divided by unlinked passenger trips.

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