Census Division: The classification is derived from the household's home address and is based on the 2000 Census definitions. The nine categories are:
Census region: The classification is derived from the household's home address and is based on the 2000 Census definitions. The four categories are:
Person miles of travel (PMT): The number of miles traveled by all persons on the trip. For example, two people making a five-mile trip in one car would generate 10 person miles.
Person trip: A trip made by one person by any mode and for any purpose. (See definition of trip for differences between daily and long-distance trips.)
Privately owned vehicle (POV) or Personal Vehicle (PV): This mode of transportation includes all personal vehicles owned or available to the household such as cars, vans, pickup trucks, other trucks, recreational vehicles, and motorcycles. Private aircrafts or boats are not included in this category.
Transit: This category includes the following modes of transportationlocal public transit buses, commuter buses, commuter trains, subway/elevated trains, street car/trolleys. Because of a detailed breakdown of categories available on the 2001 NHTS, the definition of transit no longer includes charter, tour, and courtesy buses.
Trip: Trips are defined differently in the daily and long-distance trip segments. Regular trips (more than 10 a day) that were part of a person's employmente.g., trips by a taxi driver were not collected in either component.
Daily trip: On the daily travel component a trip is defined as going from one address to another, other than changing the mode of transportation. A daily trip does not have to originate from home, and can begin from the last address traveled.
Long-distance trip: In the travel period (long distance) component, a long-distance trip is defined as a trip of 50 miles or more away from home. This includes the portions of the trip from the home to farthest destination, as well as the return trip home and any overnight stops or changes in transportation made along the way.
Trip purpose: A trip purpose is the reason that motivates the travel. For this report, the following sets of trip categories were used for daily and long-distance trips respectively.
Family and Personal BusinessIncludes trips for the purpose of window shopping or purchase of goods, doctor or dentist visits, picking up or dropping off someone else, and other personal reasons, such as the purchase of services, haircuts, banking, and car repair.
School/ChurchTrips to school, college or university classes, or to attend religious activities.
Social and RecreationsIncludes trips taken as vacation, to visit friends and relatives, and other activities such as participating in sports, and going to movies or other entertainment venues.
WorkTrips to and from one's place of work, or where one reports to work.
Work RelatedTrips made for one's job, other than travel to and from the place of work. This may include going to a meeting, conference, or visiting clients.
BusinessThis category includes trips taken to attend conferences and meetings or for any other business purpose other than commuting to and from work. Trips are classified as business so long as business is the primary purpose, even though the traveler may have done some sightseeing or other pleasure activities.
PleasureThis category includes vacations, sightseeing excursions, as well as trips taken for the purposes of rest and relaxation, visiting friends and family or outdoor recreation.
Personal and Family BusinessThis category includes medical visits, shopping trips, and trips to attend weddings, funerals, etc.
WorkTrips to and from work, commonly referred to as commuting trips.
Vehicle miles of travel (VMT): Each mile traveled by a privately owned vehicle without regard to the number of occupants in the vehicle. For example, two people making a five-mile car trip would generate five vehicle miles of travel.
Vehicle trips: A vehicle trip includes all trips made by a privately owned vehicle without regard to the number of occupants in the vehicle.