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U.S. Department of TransportationU.S. Department of Transportation IconUnited States Department of TransportationUnited States Department of Transportation
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PSUPrimary Sampling Unit ( Nationwide Personal Transportation Survey (NPTS) )
Pacific DivisionWashington, Oregon, California, Alaska, Hawaii ( American Travel Survey (ATS) 1995 )
Parcel Delivery/Courier/U.S. Postal ServiceDelivery services, parcels, packages, and other small shipments that typically weigh less than 100 pounds. Includes bus parcel delivery service. ( Commodity Flow Survey (CFS) )
PassengerAny person on board a flight who is not a member of the flight or cabin crew. ( Air Carrier Statistics (Form 41 Traffic)- All Carriers, Air Carrier Statistics (Form 41 Traffic)- U.S. Carriers )
For a specific trip, any occupant of a motorized vehicle, other than the driver. ( Nationwide Personal Transportation Survey (NPTS) )
Passenger MileOne passenger transported one statute mile. Total passenger miles are computed by summation of the products of the aircraft miles flown on each inter-airport flight stage multiplied by the number of passengers carried on that flight stage. ( Air Carrier Summary Data (Form 41 and 298C Summary Data) )
Passenger RevenuesRevenues from the air transportation of passengers. ( Airline On-Time Performance Data )
Passenger Service ExpensesCost of activities contributing to the comfort, safety, and convenience of passengers while in flight or when flights are interrupted. Includes salaries and expenses of flight attendants and passenger food expenses. ( Air Carrier Financial Reports (Form 41 Financial Data) )
PayloadEqual to the certificated takeoff weight of an aircraft, less the empty weight, less all justifiable aircraft equipment, and less the operating load (consisting of minimum fuel load, oil, flight crew, steward's supplies, etc). ( Air Carrier Statistics (Form 41 Traffic)- U.S. Carriers, Air Carrier Statistics (Form 41 Traffic)- All Carriers )
Peak-period TripAny travel day trip that began between 6:30 a.m. and 9:00 a.m. or from 3:30 p.m. to 6:00 p.m. ( Nationwide Personal Transportation Survey (NPTS) )
Person Miles of Travel (PMT)A measure of person travel. When one person travels one mile, one person mile of travel results. Where 2 or more persons travel together in the same vehicle, each person makes the same number of person miles as the vehicle miles. Therefore, four persons traveling 5 miles in the same vehicle, make 4 times 5 or 20 person miles. ( Nationwide Personal Transportation Survey (NPTS) )
Person TripA person trip is a trip by one or more persons in any mode of transportation. Each person is considered as making one person trip. For example, four persons traveling together in one auto make four person trips. ( Nationwide Personal Transportation Survey (NPTS) )
Person-MilesAn estimate of the aggregate distances traveled by all persons who took a trip and is based on the estimated transportation network miles traveled on the trip. ( American Travel Survey (ATS) 1995 )
Person-NightsThe aggregate number of nights spent by all persons on a trip. For example, if two people took a trip that involved five nights away from home, a total of 10 person-nights would be counted for that trip. ( American Travel Survey (ATS) 1995 )
Personal Use Vehicle TripAny trip in which the main type of transportation used to cover most of the miles on that trip was auto, pickup truck, van, other truck, rental car, truck or van, recreational vehicle, or motorcycle. ( American Travel Survey (ATS) 1995 )
PipelineMovements of oil, petroleum, gas, slurry, etc., through pipelines that extend to other establishments or locations beyond the shipper's establishment. Aqueducts for the movement of water are not included. ( Commodity Flow Survey (CFS) )
PlaceDefined by the Census Bureau as having a population of 2,500 or more. Cities, towns, and villages are all places. ( Census Transportation Planning Package (CTPP) 1990 )
Place of ResidenceThe location at which Census respondents said they lived at the time the Census was taken. Household and economic characteristics are summarized by residence location. ( Census Transportation Planning Package (CTPP) 1990 )
Place of WorkThe location at which Census respondents said they worked. Worker characteristics summarized by work place location. ( Census Transportation Planning Package (CTPP) 1990 )
Pleasure TripAny trip where the purpose of the trip is given as to visit friends or relatives, rest or relaxation, school activities, sightseeing, entertainment, outdoor recreation, or shopping. ( American Travel Survey (ATS) 1995 )
Primary Metropolitan Statistical Area (PMSA)A component area of a consolidated metropolitan statistical area (CMSA). Any metropolitan area having more than one million persons may be divided in to subareas called primary metropolitan statistical areas (PSMAs) based on criteria established by the Office of Management and Budget. PMSAs consist of a large urbanized county or cluster of counties that demonstrates very strong internal economic and social links, in addition to close ties to other portions of the larger area. In New England, PMSAs are composed of cities and towns rather than whole counties. ( American Travel Survey (ATS) 1995 )
Principal Means Of TransportationThe means of transportation used for most of the distance from the origin to the destination. Respondents were asked to report separately the major type of transportation used for going and for returning on the trip. If a different means was used for going and returning, the major means of transportation was the mode used on the going trip. ( American Travel Survey (ATS) 1995 )
Private TruckTrucks operated by a temporary or permanent employee of an establishment or the buyer/receiver of the shipment. ( Commodity Flow Survey (CFS) )
Private VehicleAutomobile: A privately owned and/or operated licensed motorized vehicle including cars, jeeps and station wagons. Also includes leased and rented cars if they are privately operated and not picking up passengers in return for fare. Van: Privately owned and/or operated vans and mini vans designed to carry from 5 to 13 passengers or to haul cargo.Pickup Truck: A motorized vehicle, privately owned and/or operated, with an enclosed cab that usually accommodates 2-3 passengers and an open cargo area in the rear. Pickup trucks usually have about the some wheelbase as a full-size station wagon.Other Truck: All trucks other than pickups, i.e., dump trucks, trailer trucks, etc.RV or Motor Home: Includes self-powered recreational vehicles that are operated as a unit without being towed by another vehicle (e.g., a Winnebago motor home).Motorcycle: Includes large, medium, and small motorcycles. Does not include minibikes, which cannot be licensed for highway use. ( Nationwide Personal Transportation Survey (NPTS) )
Promotion And Sales ExpensesCost incurred in promoting the use of air transportation generally and creating a public preference for the services of particular air carriers. Includes the functions of selling, advertising, and publicity, space reservations, and developing tarrifs and flight schedules for publication. ( Air Carrier Financial Reports (Form 41 Financial Data) )
Public TransportationBus: Includes intercity buses, mass transit systems, and shuttle buses that are available to the general public. Also includes Dial-A-Bus and Senior Citizen buses that are available to the public. Does not include shuttle buses operated by a government agency or private industry for the convenience of employees, contracted or chartered buses or school buses. Commuter Trains: Includes commuter trains and passenger trains other than elevated trains and subways. Includes local and commuter train service. Does not include intercity service by Amtrak.Streetcar/Trolley: Includes trolleys, streetcars, and cable cars.Elevated Rail/Subway: Includes elevated and subway trains in a city. ( Nationwide Personal Transportation Survey (NPTS) )
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