| A |
| Term | Definition |
|---|
|
| Activity | Persons age 16 and over were asked to classify themselves by their main activity, i.e., working full or part time, a homemaker, in the armed forces, going to school, or retired. ( American Travel Survey (ATS) 1995 ) |
| Actual Arrival Times | Gate arrival time is the instance when the pilot sets the aircraft parking brake after arriving at the airport gate or passenger unloading area. If the parking brake is not set, record the time for the opening of the passenger door. Also, carriers using a Docking Guidance System (DGS) may record the official gate-arrival time when the aircraft is stopped at the appropriate parking mark. ( Airline On-Time Performance Data ) |
| Actual Departure Times | Gate departure time is the instance when the pilot releases the aircraft parking brake after passengers have loaded and aircraft doors have been closed. In cases where the flight returned to the departure gate before wheels-off time and departed a second time, report the last gate departure time before wheels-off time. In cases of an air return, report the last gate departure time before the gate return. If passengers were boarded without the parking brake being set, record the time that the passenger door was closed. Also, carriers using a Docking Guidance System may record the official gate-departure time based on aircraft movement. For example, one DGS records gate departure time when the aircraft moves more than 1 meter from the appropriate parking mark within 15 seconds. Fifteen seconds is then subtracted from the recorded time to obtain the appropriate out time. ( Airline On-Time Performance Data ) |
| Air | Air service for shipments that typically weigh more than 100 pounds using commercial or private aircraft. Includes air freight and air express. ( Commodity Flow Survey (CFS) ) |
| Air Freight | Property, other than express and passenger baggage transported by air. ( Air Carrier Statistics (Form 41 Traffic)- U.S. Carriers, Small Air Carrier Statistics (Form 298C Traffic Data), Air Carrier Statistics (Form 41 Traffic)- All Carriers ) |
| Air Taxi | A classification of air carriers established by 14 CFR 298 which operate small aircraft, and do not hold a certificate of public convenience and necessity. ( Small Air Carrier Statistics (Form 298C Traffic Data) ) |
| Air Time | The airborne hours of aircraft computed from the moment an aircraft leaves the ground until it touches the ground at the end of a flight stage. ( Air Carrier Statistics (Form 41 Traffic)- U.S. Carriers, Air Carrier Statistics (Form 41 Traffic)- All Carriers ) |
| Air Traffic Liabilities | The value of transportation sold but not used or refunded; i.e., (1) liabilities to passengers, or (2) liabilities to others. These include payables to other airlines for portions of interairline passenger trips - amounts the ticketing carrier owes the performing carrier. Also included are amounts the ticketing carrier owes to passengers prior to flights - which remain unearned revenue until air transportation is provided. ( Air Carrier Financial Reports (Form 41 Financial Data) ) |
| Air Trip | Any trip in which the type of transportation used to cover most of the miles on that trip was either by commercial airplane or a personal or corporate airplane. ( American Travel Survey (ATS) 1995 ) |
| Aircraft And Traffic Servicing Expenses | Compensation of ground personnel, in-flight expenses for handling and protecting all non-passenger traffic including passenger baggage, and other expenses incurred on the ground to (1) protect and control the in-flight movement of the aircraft, (2) schedule and prepare aircraft operational crew for flight assignment, (3) handle and service aircraft while in line operation, and (4) service and handle traffic on the ground after issuance of documents establishing the air carrier's responsibility to provide air transportation. ( Air Carrier Financial Reports (Form 41 Financial Data) ) |
| Aircraft Configuration | The type of payload an aircraft was designed to carry: passenger, cargo, or both. ( Air Carrier Statistics (Form 41 Traffic)- All Carriers, Air Carrier Statistics (Form 41 Traffic)- U.S. Carriers ) |
| Aircraft Days Assigned | The number of days that aircraft owned or acquired through rental or lease (but not inter-change) are in the possession of the reporting air carrier and are available for service on the reporting carrier's routes plus the number of days such aircraft are in service on routes of others under interchange agreements. Includes days in overhaul, or temporarily out of service due to schedulecancellations. Excludes days that newly acquired aircraft are on hand but not available or formally withdrawn from air transport service. ( Air Carrier Summary Data (Form 41 and 298C Summary Data) ) |
| Aircraft Hours | The airborne hours of aircraft computed from the moment an aircraft leaves the ground until it touches the ground at the end of a flight stage. ( Small Air Carrier Statistics (Form 298C Traffic Data) ) |
| Aircraft Operating Expenses | Expenses incurred directly in the in-flight operation of aircraft. ( Air Carrier Financial Reports (Form 41 Financial Data) ) |
| Airline ID | An identification number assigned by US DOT to identify a unique airline (carrier). A unique airline (carrier) is defined as one holding and reporting under the same DOT certificate regardless of its Code, Name, or holding company/corporation. Use this field for analysis across a range of years. ( Air Carrier Summary Data (Form 41 and 298C Summary Data), Air Carrier Statistics (Form 41 Traffic)- All Carriers, Aviation Support Tables, Air Carrier Financial Reports (Form 41 Financial Data), Airline On-Time Performance Data, Air Carrier Statistics (Form 41 Traffic)- U.S. Carriers ) |
| Airport Code | A three character alpha-numeric code issued by the U.S. Department of Transportation which is the official designation of the airport. The airport code is not always unique to a specific airport because airport codes can change or can be reused. ( Air Carrier Statistics (Form 41 Traffic)- All Carriers, Air Carrier Statistics (Form 41 Traffic)- U.S. Carriers, Airline On-Time Performance Data, Air Carrier Summary Data (Form 41 and 298C Summary Data), Airline Origin and Destination Survey (DB1B), Small Air Carrier Statistics (Form 298C Traffic Data), Aviation Support Tables ) |
| Airport ID | An identification number assigned by US DOT to identify a unique airport. Use this field for airport analysis across a range of years because an airport can change its airport code and airport codes can be reused. ( Air Carrier Summary Data (Form 41 and 298C Summary Data), Air Carrier Statistics (Form 41 Traffic)- All Carriers, Air Carrier Statistics (Form 41 Traffic)- U.S. Carriers, Aviation Support Tables, Airline Origin and Destination Survey (DB1B), Airline On-Time Performance Data ) |
| Arrival Delay | Arrival delay equals the difference of the actual arrival time minus the scheduled arrival time. A flight is considered on-time when it arrives less than 15 minutes after its published arrival time. ( Airline On-Time Performance Data ) |
| Assets | Current Assets include cash, accounts receivable, notes receivable. Long-term assets include net carrier operating property. ( Motor Carrier Financial & Operating Information ) |
| Available Seat Miles | The aircraft miles flown in each inter-airport segment multiplied by the number of seats available for revenue passenger use on that segment. ( Small Air Carrier Statistics (Form 298C Traffic Data) ) |
| Average Miles Per Shipment | The 1993 CFS excluded shipments of STCC 27, Printed Matter, from calculation of average miles per shipment. This was done after determining that respondents in the 1993 CFS shipping newspapers, magazines, catalogs, etc., had used widely varying definitions of the term shipment. In the 1997 CFS, numerous efforts were made during data collection and editing to produce consistent results from establishments shipping SCTG 29, Printed Products. As a result, average miles per shipment for printed products is included in calculations for the 1997 CFS. ( Commodity Flow Survey (CFS) ) |
| B |
| Term | Definition |
|---|
|
| Business Trip | Any trip which the main purpose of the trip is given as business, combined business and pleasure or convention. ( American Travel Survey (ATS) 1995 ) |
| C |
| Term | Definition |
|---|
|
| CRS | Computer Reservation System. CRS provide information on airline schedules, fares and seat availability to travel agencies and allow agents to book seats and issue tickets. ( Airline On-Time Performance Data ) |
| Cancelled Flight | A flight that was listed in a carrier's computer reservation system during the seven calendar days prior to scheduled departure but was not operated. ( Airline On-Time Performance Data ) |
| Carrier Code | Code assigned by IATA and commonly used to identify a carrier. As the same code may have been assigned to different carriers over time, the code is not always unique. ( Air Carrier Statistics (Form 41 Traffic)- All Carriers, Airline On-Time Performance Data, Air Carrier Summary Data (Form 41 and 298C Summary Data), Air Carrier Statistics (Form 41 Traffic)- U.S. Carriers, Small Air Carrier Statistics (Form 298C Traffic Data), Air Carrier Financial Reports (Form 41 Financial Data), Aviation Support Tables ) |
| Census Division | Groupings of states that are subdivisions of the four census regions. There are nine divisions, which the Census Bureau adopted in 1910 for the presentation of data. ( American Travel Survey (ATS) 1995, Nationwide Personal Transportation Survey (NPTS) ) |
| Census Region | Groupings of states that subdivide the United States for the presentation of data. There are four regions -- Northeast, Midwest, South, and West. Each of the four divisions is divided into two or more census divisions. ( American Travel Survey (ATS) 1995 ) |
| Groupings of states that subdivide the United States for the presentation of data. There are four regions -- Northeast, Midwest, South, and West. Each of the four regions is divided into two or more census divisions. ( Nationwide Personal Transportation Survey (NPTS) ) |
| Certificate Of Public Convenience And Necessity | A certificate issued to an air carrier under 49 U.S.C. 41102, by the Department of Transportation authorizing the carrier to engage in air transportation. ( Airline On-Time Performance Data, Air Carrier Financial Reports (Form 41 Financial Data) ) |
| Certificated Air Carrier | An air carrier holding a Certificate of Public Convenience and Necessity issued by DOT to conduct scheduled services interstate. Nonscheduled or charter operations may also be conducted by these carriers. (same as Certified Air Carrier) ( Airline On-Time Performance Data ) |
| Certified Air Carrier | An air carrier holding a Certificate of Public Convenience and Necessity issued by DOT to conduct scheduled services interstate. Nonscheduled or charter operations may also be conducted by these carriers. (same as Certificated Air Carrier) ( Airline On-Time Performance Data ) |
| City Market ID | An identification number assigned by US DOT to identify a city market. Use this field to consolidate airports serving the same city market. ( Air Carrier Summary Data (Form 41 and 298C Summary Data), Air Carrier Statistics (Form 41 Traffic)- All Carriers, Aviation Support Tables, Airline On-Time Performance Data, Airline Origin and Destination Survey (DB1B), Air Carrier Statistics (Form 41 Traffic)- U.S. Carriers ) |
| Class I Motor Carriers | Carriers having annual carrier operating revenues (including interstate and intrastate) of $10 million or more after applying the revenue deflator formula in Note A. (Note A contains a deflator based on the Producer Price Index. It is available in 49 CFR 369) ( Motor Carrier Financial & Operating Information ) |
| Class II Motor Carriers | Carriers having annual carrier operating revenues (including interstate and intrastate) of at least $3 million but less than $10 million after applying the revenue deflator formula in Note A. (Note A contains a deflator based on the Producer Price Index. It is available in 49 CFR 369) ( Motor Carrier Financial & Operating Information ) |
| Class III Motor Carriers | Carriers having annual carrier operating revenues (including interstate and intrastate) of less than $3 million after applying the revenue deflator formula in Note A. (Note A contains a deflator based on the Producer Price Index. It is available in 49 CFR 369) ( Motor Carrier Financial & Operating Information ) |
| Codeshare | An arrangement whereby a marketing carrier's code is used to identify a flight operated by another carrier. The marketing carrier may make reservations and issue tickets for the operating carrier's flights. ( Airline Origin and Destination Survey (DB1B) ) |
| Commercial Operator | A person who, for compensation or hire, engages in the carriage by aircraft in air commerce of persons or property, other than as an air carrier or foreign air carrier or under the authority of 14CFR375. Where it is doubtful that an operation is for compensation or hire, the test applied is whether the carriage by air is merely incidental to the person's other business or is, in itself, a major enterprise for profit. ( Air Carrier Financial Reports (Form 41 Financial Data) ) |
| Commodity | Products that an establishment produces, sells, or distributes. This does not include items that are considered as excess or byproducts of the establishment's operation. For the Commodity Flow Survey, respondents reported the description and the five-digit Standard Classification of Transported Goods (SCTG) code for the major commodity contained in the shipment, defined as the commodity with the greatest weight in the total shipment. ( Commodity Flow Survey (CFS) ) |
| Common Carrier | A business or agency that is available to the public for transportation of persons, goods, or messages. ( Motor Carrier Financial & Operating Information ) |
| Commuter Air Carrier | An air taxi that provides scheduled passenger service between two points at least 5 days a week. ( Small Air Carrier Statistics (Form 298C Traffic Data) ) |
| Commuter Trip | See Journey-to-Work. ( Census Transportation Planning Package (CTPP) 1990 ) |
| Completed Departures | Takeoffs made at an airport. (same as Departures Performed) ( Small Air Carrier Statistics (Form 298C Traffic Data) ) |
| Consolidated Metropolitan Statistical Area (CMSA) | A CMSA is a metropolitan complex of I million or more population, containing two or more component parts designated as primary metropolitan statistical areas (PMSAs). ( Nationwide Personal Transportation Survey (NPTS) ) |
| If an MSA has a population of 1 million or more and meets requirements specified in the standards, it is termed a CMSA, consisting of two or more major components, each of which is recognized as a primary metropolitan statistical areas (PMSA). ( Nationwide Personal Transportation Survey (NPTS) ) |
| Contract Carrier | For Hire interstate operators [which] offer transportation services to certain shippers under contracts. ( Motor Carrier Financial & Operating Information ) |
| Coupon | A piece of paper or series of papers indicating the itinerary of a passenger. An airline ticket includes an auditor's coupon, flight coupons, and a passenger receipt. ( Airline Origin and Destination Survey (DB1B) ) |
| D |
| Term | Definition |
|---|
|
| Deep Draft Vessel | A barge, ship, or ferry operating primarily in the open ocean. (Shipping on the Great Lakes and St. Lawrence Seaway is classified with shallow draft vessels.) ( Commodity Flow Survey (CFS) ) |
| Departure Delay | The difference between the scheduled departure time and the actual departure time from the origin airport gate. ( Airline On-Time Performance Data ) |
| Departures Performed | Takeoffs made at an airport. (same as Completed Departures) ( Air Carrier Statistics (Form 41 Traffic)- All Carriers, Air Carrier Statistics (Form 41 Traffic)- U.S. Carriers ) |
| Departures Scheduled | Takeoffs scheduled at an airport, as set forth in published schedules. (same as Scheduled Departures) ( Air Carrier Statistics (Form 41 Traffic)- All Carriers, Air Carrier Statistics (Form 41 Traffic)- U.S. Carriers ) |
| Destination | For travel period trips, the destination is the farthest point of travel from the point of origin of a trip of 75 miles or more one-way. For travel day trips, the destination is the point at which there is a break in travel. ( Nationwide Personal Transportation Survey (NPTS) ) |
| Destination Of Trip | The place reported by a respondent as the destination of the trip. If more than one place is visited on the same trip, the place which is the farthest point from the origin is considered the destination of the trip. ( American Travel Survey (ATS) 1995 ) |
| Destination State FIPS | The FIPS code for the destination state. (see FIPS) ( Air Carrier Statistics (Form 41 Traffic)- All Carriers, Air Carrier Statistics (Form 41 Traffic)- U.S. Carriers ) |
| Distance Shipped | The distance between origin and destination for a shipment. For the distance shipped intervals table, the distance is calculated based on the great circle distance between the origin and destination ZIP Code centroids. All other distance-related data (i.e., ton-miles and average miles per shipment) are based on the mileage calculations produced by Oak Ridge National Laboratories. ( Commodity Flow Survey (CFS) ) |
| Diverted Flight | A flight that is required to land at a destination other than the original scheduled destination for reasons beyond the control of the pilot/company. ( Airline On-Time Performance Data ) |
| Domestic Operations | All air carrier operations having destinations within the 50 United States, the District of Columbia, the Commonwealth of Puerto Rico, and the U.S. Virgin Islands. ( Small Air Carrier Statistics (Form 298C Traffic Data), Airline On-Time Performance Data ) |
| Driver | A person who operates a motorized vehicle. If more than one person drives on a single trip, the person who drives the most miles is classified as the principal driver. ( Nationwide Personal Transportation Survey (NPTS) ) |
| Duration Of Trip | Number of nights spent away from home on a trip and includes nights spent at the destination, nights spent en route and nights spent on side trips. It is possible for a trip not to involve an overnight stay from home; a traveler could take a trip of 100 miles or more and return on the same day. ( American Travel Survey (ATS) 1995 ) |
| E |
| Term | Definition |
|---|
|
| East North Central Division | Ohio, Indiana, Illinois, Michigan, Wisconsin ( American Travel Survey (ATS) 1995 ) |
| East South Central Division | Kentucky, Tennessee, Alabama, Mississippi ( American Travel Survey (ATS) 1995 ) |
| Education Level | The number of years of regular schooling completed in graded public, private, or parochial schools, or in colleges, universities, or professional schools, whether day school or night school. Regular schooling advances a person toward an elementary or high school diploma, or a college, university or professional school degree. ( Nationwide Personal Transportation Survey (NPTS) ) |
| Educational Attainment | The highest grade of school completed as of the date of the first interview determines the educational category of the traveler or household head. ( American Travel Survey (ATS) 1995 ) |
| Elapsed Time | The time computed from gate departure time to gate arrival time. ( Airline On-Time Performance Data ) |
| Employed | A person is considered employed if there is a definite arrangement for regular full-time or part-time work for pay every week or every month. A formal, definite arrangement with one or more employers to work a specified number of hours a week, or days a month, but on an irregular schedule during the work month is also considered employment. A person who is on call to work whenever there is a need for his (her) services is not considered employed. ( Nationwide Personal Transportation Survey (NPTS) ) |
| Express Freight | Property, other than passenger baggage transported by air, with a premium paid over standard freight charges for more rapid delivery. ( Air Carrier Summary Data (Form 41 and 298C Summary Data) ) |
| F |
| Term | Definition |
|---|
|
| FIPS | Federal Information Processing Standards. Usually referring to a code assigned to any of a variety of geographic entities (e.g. counties, states, metropolitan areas, etc). FIPS codes are intended to simplify the collection, processing, and dissemination of data and resources of the Federal Government. ( Air Carrier Statistics (Form 41 Traffic)- All Carriers, Air Carrier Statistics (Form 41 Traffic)- U.S. Carriers, Airline On-Time Performance Data, Small Air Carrier Statistics (Form 298C Traffic Data), American Travel Survey (ATS) 1995, Airline Origin and Destination Survey (DB1B) ) |
| Family | Includes householder and all relatives who are currently members of the household. ( American Travel Survey (ATS) 1995 ) |
| Family Income | The total combined income for the previous 12 months of the householder and all persons related to the householder by blood, marriage, or adoption who were living in the household as of the date of the first interview. Family income includes income from all sources, such as wages and salaries, net income from own business or own farm, social security, pensions, dividends, interest, rent and any other money income. The income of household members not related to the householder is not included in family income. ( American Travel Survey (ATS) 1995 ) |
| Federal Information Processing Standards (FIPS) | Federal Information Processing Standards. Usually referring to a code assigned to any of a variety of geographic entities (e.g. counties, states, metropolitan areas, etc). FIPS codes are intended to simplify the collection, processing, and dissemination of data and resources of the Federal Government. ( Nationwide Personal Transportation Survey (NPTS) ) |
| Flight Equipment | All types of property and equipment used in the in-flight operation of aircraft. ( Air Carrier Financial Reports (Form 41 Financial Data) ) |
| Flight Number | A one to four character alpha-numeric code for a particular flight. ( Airline On-Time Performance Data ) |
| Flying Operations Expenses | Expenses incurred directly in the in-flight operation of aircraft and expenses related to the holding of aircraft and aircraft operational personnel in readiness for assignment for an in-flight status. ( Air Carrier Financial Reports (Form 41 Financial Data) ) |
| For-Hire Truck | Trucks that carry freight for a fee collected from the shipper, recipient of the shipment, or an arranger of the transportation. ( Commodity Flow Survey (CFS) ) |
| Form 41 Financial Statistics | The statistics collected on the financial forms submitted monthly, quarterly, semiannually, and annually to BTS by each large certificated air carrier subject to the Federal Aviation Act of 1958. The four classes of financial and operating statistics collected on individual schedules of the Form 41 Report are grouped as follows: (A) Certification, (B) Balance Sheet Elements, (P) Profit and Loss Elements, and (T) Traffic and Capacity Elements. ( Air Carrier Financial Reports (Form 41 Financial Data) ) |
| Form 41 Report | The schedule of forms submitted monthly, quarterly, semiannually, and annually to BTS by each large certificated air carrier subject to the Federal Aviation Act of 1958. ( Air Carrier Financial Reports (Form 41 Financial Data) ) |
| Form M | Class I and II motor carriers are required to annually submit financial, operating, and employment data to Bureau of Transportation Statistics using Form M. Also known as the Motor Carrier Annual Report Form M. ( Motor Carrier Financial & Operating Information ) |
| Form QFR | Class I motor carriers are required to submit financial and operating data to Bureau of Transportation Statistics each quarter using Form QFR. Also known as the Motor Carrier Quarterly Report Form QFR. ( Motor Carrier Financial & Operating Information ) |
| Full-time Equivalent Employee (FTE) | The number of full-time equivalent employees equals the number of employees on full-time schedules plus the number of employees on part-time schedules converted to a full-time basis. Two part-time employees are counted as one full-time employee. An airline's number of full-time equivalent employees will be less than the number of its total employees unless it has no part-time employees. ( Air Carrier Financial Reports (Form 41 Financial Data) ) |
| G |
| Term | Definition |
|---|
|
| Gateway | In international travel, the port where customs clearance takes place. ( Airline Origin and Destination Survey (DB1B) ) |
| Great Circle Distance | The shortest distance between two points on the earth's surface. ( Commodity Flow Survey (CFS) ) |
| Great Lakes | A single mode specially created in ORNL's transportation network for the Commodity Flow Survey for mileage calculations which involve transportation via the Great Lakes between the origin and destination ZIP Codes (see the Mileage Calculations section for more details). ( Commodity Flow Survey (CFS) ) |
| Group Quarters | Communal housing, such as dormitories, military bases, prisons and nursing homes. Group quarters are distinct from households. ( Census Transportation Planning Package (CTPP) 1990 ) |
| H |
| Term | Definition |
|---|
|
| Hispanic Origin | Referring to any person whose primary ethnic ancestry is of primarily Spanish-speaking countries. Hispanic origin includes Mexican, Puerto Rican, Cuban, Central or South American, or other Hispanic origin. ( American Travel Survey (ATS) 1995 ) |
| Household | A group of persons whose usual place of residence is a specific housing unit; these persons may or may not be related to each other. The total of all U.S. households represents the total civilian non-institutionalized population. Does not include group quarters (i.e., 10 or more persons living together, none of whom are related). ( Nationwide Personal Transportation Survey (NPTS) ) |
| The basic sampling and reporting unit for collecting travel and other information in the American Travel Survey. A household consists of all persons who occupy a housing unit such as a house, apartment, or rooms that form separate living quarters. ( American Travel Survey (ATS) 1995 ) |
| Household Composition | One of any classifications regarding the relationship of household members to each other and the presence or absence of children. ( American Travel Survey (ATS) 1995 ) |
| Household Income | The money income of all family members in a household, including those temporarily absent. Annual income is asked for the 12 months preceding the interview. Includes income from all sources, such as wages and salary, commissions, tips, cash bonuses, income from a business or farm, pensions, dividends, interest, unemployment or work men's compensation, social security, veterans' payments, rent received from owned property (minus the operating costs), public assistance payments, regular gifts of money from friends or relatives not living in the household, alimony, child support, and other kinds of periodic money income other than earnings. Excludes in-kind income such as room and board, insurance payments, lump-sum inheritances, occasional gifts of money from persons not living in the same household, withdrawal of savings from banks, tax refunds, and the proceeds of the sale of one's house, car or other personal property. ( Nationwide Personal Transportation Survey (NPTS) ) |
| Household Members | All people, whether present or temporarily absent, whose usual place of residence is in the sample unit. Includes people staying in the sample unit who have no other usual place of residence elsewhere. ( Nationwide Personal Transportation Survey (NPTS) ) |
| Household Trip | One or more household members traveling together. ( Nationwide Personal Transportation Survey (NPTS) ) |
| Household Type | A classification taking into account the number of household members and their relationship to each other. Household types include family households and non-family households. Family households include married-couple households, female householders, and male householders with and without children in selected age groups. Non-family households include male and female householders living alone or not living alone. ( American Travel Survey (ATS) 1995 ) |
| Household Vehicle | A motorized vehicle that is owned, leased, rented or company owned and available to be used regularly by household members during the travel period. Includes vehicles used solely for business purposes or business-owned vehicles if kept at home and used for the home to work trip, (e.g., taxicabs, police cars, etc.) which may be owned by, or assigned to, household members for their regular use. Includes all vehicles that were owned or available for use by members of the household during the travel period even though a vehicle may have been sold before the interview. Excludes vehicles that were not working and not expected to be working within 60 days, and vehicles that were purchased or received after the designated travel day. ( Nationwide Personal Transportation Survey (NPTS) ) |
| I |
| Term | Definition |
|---|
|
| In-Flight Time | The total time an aircraft is in the air between an origin-destination airport pair, i.e. from wheels-off at the origin airport to wheels-down at the destination airport. ( Airline On-Time Performance Data ) |
| Interstate Highway, Freeway, or Expressway | A divided arterial highway for through traffic with full or partial control of access and grade separations at major intersections. ( Nationwide Personal Transportation Survey (NPTS) ) |
| J |
| Term | Definition |
|---|
|
| Journey-to-Work (JTW) | The one-way trip from home to work, or a commuter trip. ( Census Transportation Planning Package (CTPP) 1990 ) |
| L |
| Term | Definition |
|---|
|
| Large Certificated Air Carrier | An air carrier holding a certificate issued under 49 U.S.C.41102, as amended, that: (1) Operates aircraft designed to have a maximum passenger capacity of more than 60 seats or a maximum payload capacity of more than 18,000 pounds; or (2) conducts operations where one or both terminals of a flight stage are outside the 50 states of the United States, the District of Columbia, the Commonwealth of Puerto Rico and the U.S. Virgin Islands. (same as Large Certified U.S. Air Carriers) ( Air Carrier Financial Reports (Form 41 Financial Data) ) |
| Large Certified U.S. Air Carriers | An air carrier holding a certificate issued under 49 U.S.C.41102, as amended, that: (1) Operates aircraft designed to have a maximum passenger capacity of more than 60 seats or a maximum payload capacity of more than 18,000 pounds; or (2) conducts operations where one or both terminals of a flight stage are outside the 50 states of the United States, the District of Columbia, the Commonwealth of Puerto Rico and the U.S. Virgin Islands. (same as Large Certificated Air Carrier) ( Air Carrier Financial Reports (Form 41 Financial Data) ) |
| Late Flight | A flight arriving or departing 15 minutes or more after the scheduled time. ( Airline On-Time Performance Data ) |
| Liabilities | Current liabilities include accounts payable, notes payable, taxes payable, and current portion of long-term debt. Long-term liabilities include long-term debt. ( Motor Carrier Financial & Operating Information ) |
| Licensed Driver | Any person who holds a valid driver's license from any state. ( Nationwide Personal Transportation Survey (NPTS) ) |
| Lodging | A temporary place to stay (e.g. motel, cabin, domitory, etc). ( American Travel Survey (ATS) 1995 ) |
| M |
| Term | Definition |
|---|
|
| Maintenance Expense | All expenses, both direct and indirect, specifically identifiable with the repair and upkeep of property and equipment. ( Air Carrier Financial Reports (Form 41 Financial Data) ) |
| Market (Using DB1B Data) | A Market in DB1B data is created by a trip break. Trip Breaks are points in the itinerary at which a passenger is assumed to have stopped for a reason other than changing planes. For example: an itinerary BOS-LAS-BOS would have two markets BOS-LAS and LAS-BOS. The trip break occurred at LAS. ( Airline Origin and Destination Survey (DB1B) ) |
| Market (Using T100 Data) | Market data are passenger, freight, and/or mail that enplane and deplane between two specific points, while the flight number remains the same. If the flight number changes a new market begins. For more details go to Frequently Asked Questions. ( Air Carrier Statistics (Form 41 Traffic)- All Carriers ) |
| Market data are passenger, freight, and/or mail that enplane and deplane between two specific points, while the flight number remains the same. If the flight number changes a new market begins. For more details go to Frequently Asked Questions. ( Air Carrier Statistics (Form 41 Traffic)- U.S. Carriers ) |
| Marketing Carrier | An air carrier that issued a flight reservation or ticket under a codeshare agreement. ( Airline Origin and Destination Survey (DB1B) ) |
| Means of Transportation | A mode used for going from one place (origin) to another (destination). Includes private and public modes, as well as walking. For all travel day trips, each change of mode constitutes a separate trip. ( Nationwide Personal Transportation Survey (NPTS) ) |
| A mode used for going from one place (origin) to another (destination). Includes private and public modes, as well as walking. For all travel day trips, each change of mode constitutes a separate trip. The following transportation modes, grouped by major mode, are included: ( Nationwide Personal Transportation Survey (NPTS) ) |
| Metropolitan Area | A large population nucleus, together with adjacent communities that have a high degree of economic and social integration with that nucleus. A metropolitan area (MA) may be defined around two or more nuclei. The MA is a statistical standard designated and defined by the Office of Management and Budget, following a set of official published standards. An MA comprises one or more counties except in New England where MAs are composed of cities and towns rather than whole counties. Classifications of MAs include metropolitan statistical area (MSA) and consolidated metropolitan statistical area (CMSA) that is divided into primary metropolitan statistical areas (PMSA). ( American Travel Survey (ATS) 1995 ) |
| Metropolitan Statistical Area | A relatively freestanding metropolitan area (MA) that is not closely associated with other MAs. These areas typically are surrounded by nonmetropolitan counties. A metropolitan statistical area (MSA) comprises one or more counties except in New England where MSAs are composed of cities and towns rather than whole counties. ( American Travel Survey (ATS) 1995 ) |
| An MSA is a county or group of contiguous counties that contains at least one city with a population of 50,000 or more or a Census Bureau-defined urbanized area of at least 50,000 with a metropolitan population of at least 100,000. In addition to the county or counties that contain all or part of the main city or urbanized area, an MSA may contain other counties that are metropolitan in character and are economically and socially integrated with the main city. ( Census Transportation Planning Package (CTPP) 1990 ) |
| Metropolitan Statistical Area (MSA) | An MSA is a county or group of contiguous counties that contains at least one city with a population of 50,000 or more or a Census Bureau-defined urbanized area of at least 50,000 with a metropolitan population of at least 100,000. In addition to the county or counties that contain all or part of the main city or urbanized area, an MSA may contain other counties that are metropolitan in character and are economically and socially integrated with the main city. ( Nationwide Personal Transportation Survey (NPTS) ) |
| Mid Atlantic Division | New York, New Jersey, Pennsylvania ( American Travel Survey (ATS) 1995 ) |
| Mile | A statute mile (5,280 feet). All mileage computations are based on statute miles. ( Air Carrier Statistics (Form 41 Traffic)- All Carriers, Air Carrier Statistics (Form 41 Traffic)- U.S. Carriers ) |
| Mode Of Transportation | The type of transportation used for moving a shipment to its domestic destination. For exports, the domestic destination is the port of exit. ( Commodity Flow Survey (CFS) ) |
| Motorized Vehicle | Includes all vehicles that are licensed for highway driving. Specifically excluded are snow mobiles, minibikes, etc. ( Nationwide Personal Transportation Survey (NPTS) ) |
| Mountain Division | Montana, Idaho, Wyoming, Colorado, New Mexico, Arizona, Utah, Nevada ( American Travel Survey (ATS) 1995 ) |
| Multiple Modes | Parcel, U.S. Postal Service or courier shipments or shipments for which two or more of the following modes of transportation were used: private truck, for-hire truck, rail, shallow draft vessel, deep draft vessel, or pipeline. ( Commodity Flow Survey (CFS) ) |
| N |
| Term | Definition |
|---|
|
| New England Division | Maine, New Hampshire, Vermont, Massachusetts, Rhode Island, Connecticut ( American Travel Survey (ATS) 1995 ) |
| Nights Away From Home | The number of nights spent away from home on one trip, including nights spent at the destination, on stops to and from the destination and on side trips away from the destination. Nights away from home are broken into categories including nights at the destination, nights at stops and side trips, and nights en route. ( American Travel Survey (ATS) 1995 ) |
| Non-Revenue Traffic | Passengers and cargo transported by air for which no renumeration or token service charges are received by the air carrier. Airline employees, officers and directors, or other persons, except for ministers of religon, who are traveling under reduced rate transportation authorized by 49 U.S.C. 41511(a) and 14CFR part 223, as well as travel agents, cargo agents, and tour conductors traveling at reduced fares are also considered nonrevenue traffic. ( Air Carrier Summary Data (Form 41 and 298C Summary Data) ) |
| Non-Scheduled Service | Revenue flights, such as charter flights, that are not operated in regular scheduled service. ( Small Air Carrier Statistics (Form 298C Traffic Data), Air Carrier Financial Reports (Form 41 Financial Data) ) |
| Nonoperating Income And Expense | Interest income and expense, unusual foreign exchange gains or losses, and capital gains or losses in disposition of property and equipment. ( Air Carrier Financial Reports (Form 41 Financial Data) ) |
| O |
| Term | Definition |
|---|
|
| Occupancy | The number of persons, including driver and passenger(s) in a vehicle. NPTS occupancy rates are generally calculated as person miles divided by vehicle miles. ( Nationwide Personal Transportation Survey (NPTS) ) |
| Occupational Class | Occupational categories such as executive, manegerial, administrative, sales, production, and farming. ( Census Transportation Planning Package (CTPP) 1990 ) |
| Operating Carrier | An air carrier engaged directly in the operation of aircraft in passenger air transportation. ( Airline Origin and Destination Survey (DB1B) ) |
| Operating Expenditure | Expenses from wages and salaries, operating supplies, insurance expenses, and other miscellaneous expenses. ( Motor Carrier Financial & Operating Information ) |
| Operating Expenses | Expenses incurred in the performance of air transportation, based on overall operating revenues and overall operating expenses. Does not include nonoperating income and expenses, nonrecurring items, or income tax. ( Air Carrier Financial Reports (Form 41 Financial Data) ) |
| Operating Revenue | Revenue from the transportation of property or passengers by motor carrier. ( Motor Carrier Financial & Operating Information ) |
| Operating Revenues | Revenues from the performance of air transportation and related incidental services. Includes (1) transport revenue from the carriage of all classes of traffic in scheduled and nonscheduled services, and (2) nontransport revenues consisting of Federal subsidy (where applicable) and revenues for services related to air transportation. ( Air Carrier Financial Reports (Form 41 Financial Data) ) |
| Origin | Starting point of a trip. ( Nationwide Personal Transportation Survey (NPTS) ) |
| Origin State FIPS | The FIPS code for the origin state. (see FIPS) ( Air Carrier Statistics (Form 41 Traffic)- All Carriers, Air Carrier Statistics (Form 41 Traffic)- U.S. Carriers ) |
| Other And Unknown Modes | Shipments for which modes were not reported, or were reported by the respondent as Other or Unknown. ( Commodity Flow Survey (CFS) ) |
| Other Modes | Airplane: Includes commercial airplanes and smaller planes that are available for use by the general public in exchange for a fare. Private planes and helicopters are included under other. Taxi: The use of a taxicab by a driver for hire or by a passenger for fare. Also includes airport limousines. Does not include rental cars if they are privately operated and not picking up passengers in return for fare. Bicycles: Includes bicycles of all speeds and sizes that do not have a motor. The U.S. national passenger railroad service providing intercity train service. Walk: Includes jogging, walking, etc., provided the origin and destination are not the same. School bus: Includes county school buses, private school buses, and buses chartered from private companies for the express purposes of carrying students to or from school and/or school-related activities. MOPED (Motorized Bicycle) : Includes motorized bicycles equipped with a small engine, typically 2 horsepower or less. Also includes minibikes such as dirt bikes and trail bikes. Note that a motorized bicycle may or may not be licensed for highway use. Other. Includes any types of transportation not listed above. ( Nationwide Personal Transportation Survey (NPTS) ) |
| Other Multiple Modes | Shipments using any other mode combinations not specifically listed in the Commodity Flow Survey tables. ( Commodity Flow Survey (CFS) ) |
| Other Transport-Related Revenue | Revenues from services such as in-flight sales, rentals and sales or services, supplies and parts. ( Air Carrier Financial Reports (Form 41 Financial Data) ) |
| P |
| Term | Definition |
|---|
|
| PSU | Primary Sampling Unit ( Nationwide Personal Transportation Survey (NPTS) ) |
| Pacific Division | Washington, Oregon, California, Alaska, Hawaii ( American Travel Survey (ATS) 1995 ) |
| Parcel Delivery/Courier/U.S. Postal Service | Delivery services, parcels, packages, and other small shipments that typically weigh less than 100 pounds. Includes bus parcel delivery service. ( Commodity Flow Survey (CFS) ) |
| Passenger | Any 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 Mile | One 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 Revenues | Revenues from the air transportation of passengers. ( Airline On-Time Performance Data ) |
| Passenger Service Expenses | Cost 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) ) |
| Payload | Equal 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 Trip | Any 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 Trip | A 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-Miles | An 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-Nights | The 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 Trip | Any 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 ) |
| Pipeline | Movements 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) ) |
| Place | Defined 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 Residence | The 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 Work | The location at which Census respondents said they worked. Worker characteristics summarized by work place location. ( Census Transportation Planning Package (CTPP) 1990 ) |
| Pleasure Trip | Any 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 Transportation | The 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 Truck | Trucks operated by a temporary or permanent employee of an establishment or the buyer/receiver of the shipment. ( Commodity Flow Survey (CFS) ) |
| Private Vehicle | Automobile: 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 Expenses | Cost 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 Transportation | Bus: 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) ) |
| R |
| Term | Definition |
|---|
|
| Race | The race with which the respondent and other household members most closely identify. Choices include: White, Black, American Indian, Eskimo, Or Aleut, Asian Or Pacific Islander, and Other Race. ( American Travel Survey (ATS) 1995 ) |
| Railroad | Includes common carriers (for-hire carriers that hold themselves out to serve the general public at reasonable rates and without discrimination) and private railroads (carriers not open to the public at large). ( Commodity Flow Survey (CFS) ) |
| Ramp To Ramp Time | The time computed from the moment an aircraft first moves under its own power for purposes of flight, until it comes to rest at the next point of landing. ( Air Carrier Statistics (Form 41 Traffic)- U.S. Carriers, Air Carrier Statistics (Form 41 Traffic)- All Carriers ) |
| Reporting Carrier | The carrier that submitted data to the Office of Airline Information for a given passenger segment. ( Airline Origin and Destination Survey (DB1B) ) |
| Respondent | The person who reported the information about the trip. Survey procedures specified that persons 15 years old or older be interviewed personally about any trips they took during the reference period. Household trips taken by more than one household member were reported by the first member interviewed who went on the trip. Trips taken by household members under 15 years of age were reported by a knowledgeable adult household member. Procedures were established to ensure that a household trip taken by more than one household member was reported only once with an indication of each of the household members on the trip. ( American Travel Survey (ATS) 1995 ) |
| Revenue | Pertaining to activities for which remuneration is received by the carrier. ( Air Carrier Statistics (Form 41 Traffic)- All Carriers, Small Air Carrier Statistics (Form 298C Traffic Data), Air Carrier Statistics (Form 41 Traffic)- U.S. Carriers, Air Carrier Summary Data (Form 41 and 298C Summary Data) ) |
| Revenue Passenger Mile | One revenue passenger transported one mile in revenue service. Revenue passenger miles are computed by summation of the products of the revenue aircraft miles on each interairport segment multiplied by the number of revenue passengers carried on that segment. ( Small Air Carrier Statistics (Form 298C Traffic Data) ) |
| Revenue Ton Mile | One revenue ton (2,000 pounds) transported one statute mile. ( Small Air Carrier Statistics (Form 298C Traffic Data) ) |
| Round Trip Distance | Estimated transportation network miles traveled from the residence of the household at the time of the trip to the destination and back. Miles are calculated separately from origin to destination and destination to origin and added together to allow for differences in routes traveled each way. ( American Travel Survey (ATS) 1995 ) |
| S |
| Term | Definition |
|---|
|
| Scheduled Departure Time | The scheduled time that an aircraft should lift off from the origin airport. ( Airline On-Time Performance Data ) |
| Scheduled Departures | Takeoffs scheduled at an airport, as set forth in published schedules. (same as Departures Scheduled) ( Small Air Carrier Statistics (Form 298C Traffic Data) ) |
| Scheduled Service | Transport service operated persuant to published flight schedules, including extra sections and related nonrevenue flights. ( Air Carrier Financial Reports (Form 41 Financial Data), Small Air Carrier Statistics (Form 298C Traffic Data) ) |
| Scheduled Time Of Arrival | The scheduled time that an aircraft should cross a certain point (landing or metering fix). ( Airline On-Time Performance Data ) |
| Seat Mile | The aircraft miles flown in each inter-airport segment multiplied by the number of seats available on that segment for revenue passenger use. ( Small Air Carrier Statistics (Form 298C Traffic Data), Air Carrier Summary Data (Form 41 and 298C Summary Data) ) |
| Seats Available | Installed seats in an aircraft (including seats in lounges) exclusive of any seats not offered for sale to the public by the carrier; provided that in no instance shall any seat sold be excluded from the count of available seats. ( Air Carrier Statistics (Form 41 Traffic)- U.S. Carriers, Air Carrier Statistics (Form 41 Traffic)- All Carriers ) |
| Segment | A pair of points served or scheduled to be served by a single stage of at least one flight at any given time. ( Air Carrier Statistics (Form 41 Traffic)- All Carriers, Air Carrier Statistics (Form 41 Traffic)- U.S. Carriers ) |
| Segmented Trip | A trip that includes at least one transfer. ( Nationwide Personal Transportation Survey (NPTS) ) |
| Shallow Draft Vessels | Barges, ships, or ferries operating primarily on rivers and canals; in harbors, the Great Lakes, the Saint Lawrence Seaway; the Intracoastal Waterway, the Inside Passage to Alaska, major bays and inlets; or in the ocean close to the shoreline. ( Commodity Flow Survey (CFS) ) |
| Shipment | An individual movement of commodities from an establishment to a customer or to another location of the originating company (including a warehouse, distribution center, retail or wholesale outlet). A shipment uses one or more modes of transportation including parcel delivery, U.S. Postal Service, courier, private truck, for-hire truck, rail, water, pipeline, air, and other modes. ( Commodity Flow Survey (CFS) ) |
| Small Aircraft | Aircraft originally designed to have a maximum passenger capacity of 60 seats or less or a maximum payload capacity of 18,000 pounds or less. ( Small Air Carrier Statistics (Form 298C Traffic Data) ) |
| Small Certificated Air Carrier | An air carrier which operates small aircraft, and holds a certificate of public convenience and necessity. ( Small Air Carrier Statistics (Form 298C Traffic Data) ) |
| South Atlantic Division | Delaware, Maryland, District of Columbia, Virginia, West Virginia, North Carolina, South Carolina, Georgia, Florida ( American Travel Survey (ATS) 1995 ) |
| Standard Classification Of Transported Goods | A commodity coding system developed jointly by agencies of the United States and Canadian governments based on the Harmonized System to address statistical needs in regard to products transported. (acronym SCTG) ( Commodity Flow Survey (CFS) ) |
| T |
| Term | Definition |
|---|
|
| Taxi-In Time | The time elapsed between wheels down and arrival at the destination airport gate. ( Airline On-Time Performance Data ) |
| Taxi-Out Time | The time elapsed between departure from the origin airport gate and wheels off. ( Airline On-Time Performance Data ) |
| Ton Mile | One ton (2,000 pounds) transported one statue mile. Ton-miles are computed by multiplying the aircraft miles flown on each inter-airport segment by the number of tons carried on that segment. ( Air Carrier Summary Data (Form 41 and 298C Summary Data), Small Air Carrier Statistics (Form 298C Traffic Data) ) |
| The weight times the mileage for a shipment. The respondents reported shipment weight in pounds, and mileage was calculated as the distance between the shipment origin and destination ZIP Codes. For shipments by truck, rail, or shallow draft vessels, the mileage excludes international segments. Aggregated pound-miles were converted to ton-miles (based on short tons). The ton-miles data are displayed in millions. ( Commodity Flow Survey (CFS) ) |
| Tons Shipped | The total weight of an entire shipment. Respondents reported the weight in pounds. Aggregated pounds were converted to short-tons (2,000 pounds). The tons data are displayed in thousands. ( Commodity Flow Survey (CFS) ) |
| Total Itinerary Yield | Itinerary fare per itinerary miles flown. The itinerary includes all segements of a journey from origin to destination. ( Airline Origin and Destination Survey (DB1B) ) |
| Total Modal Activity | The overall activity (e.g., ton-miles) of a specific mode of transportation, whether used in a single-mode shipment, or as part of a multiple-mode shipment. For example, the total modal activity for private truck is the total ton-miles carried by private truck in single-mode shipments, combined with the total ton-miles carried by private truck in all multiple-mode shipments that include private truck (private truck and for-hire truck, private truck and rail, private truck and air, etc.) ( Commodity Flow Survey (CFS) ) |
| Track | The actual flight path of an aircraft over the surface of the earth. ( Airline Origin and Destination Survey (DB1B) ) |
| Traffic Accident | An accident that involved a motor vehicle that occurred on a public highway or road in the United States and that resulted in property damage or personal injury. Does not include accidents that happened in a parking lot, in a driveway, on a private road, or in a foreign country. ( Nationwide Personal Transportation Survey (NPTS) ) |
| Traffic Analysis Zone (TAZ) | Level of geographic detail used in most transportation planning applications to summarize socio-economic characteristics and travel data. TAZs vary in size depending on density and homogeneity of land uses, and are defined by local agencies. ( Census Transportation Planning Package (CTPP) 1990 ) |
| Traffic Related Expenses | Expenses incurred due to traffic solicitor salaries, traffic commissions, passenger food expense, traffic liability insurance, advertising and other promotion and publicity expenses, and the fringe benefit expenses related to all salaries in this classification. ( Air Carrier Financial Reports (Form 41 Financial Data) ) |
| Transfer | To change vehicles or means of transportation while traveling between origin and destination. ( Nationwide Personal Transportation Survey (NPTS) ) |
| Transport-Related Expenses | All expense items applicable to the generation of transport-related revenues. ( Air Carrier Financial Reports (Form 41 Financial Data) ) |
| Transport-Related Revenues | Revenues from the transportation by air of all classes of traffic in scheduled and nonscheduled service. ( Air Carrier Financial Reports (Form 41 Financial Data) ) |
| Travel Day | A 24-hour period from 4:00 a.m. to 3:59 a.m. designated as the reference period for studying trips and travel by members of a sampled household. ( Nationwide Personal Transportation Survey (NPTS) ) |
| Travel Day Trip | A travel day trip is defined as any one-way travel from one address (place) to another by any means of transportation (e.g., private motor vehicle, public transportation, bicycle, or walking). When travel is to more than one destination, a separate trip exists each time one or both of the following criteria is satisfied: the travel time between two destinations exceeds 5 minutes, and/or the purpose for travel to one destination is different from the purpose for travel to another. The one exception is travel within a shopping center or mall. It is to be considered travel to one destination, regardless of the number of stores visited. ( Nationwide Personal Transportation Survey (NPTS) ) |
| Travel Party Size | Any of three groups depending on whether household and/or non-household members were on the trip. Travel Party is the total number of household and non-household members on the trip. Household Travel Party is the total number of household members on the trip. Non-Household Travel Party is the total number of non-household members on the trip. ( American Travel Survey (ATS) 1995 ) |
| Travel Party Type | Any of eight categories describing the number of adults and children in the group. ( American Travel Survey (ATS) 1995 ) |
| Travel Period | The 13 days immediately preceding the travel day and the designated travel day for a sampled household, for a total of 14 days. ( Nationwide Personal Transportation Survey (NPTS) ) |
| Travel Period Trip | A travel period trip is one-way to a destination, which is 75 miles-or-more from home with a return home trip during the 14-day travel period. Travel to the destination is counted as one trip and travel to return home is counted as another trip. For example, a person living in Denver flies to San Francisco, stays one week, and returns to Denver during the 14-day travel period. This would be counted as two travel period trips - one outgoing and one return. The only time a travel period trip would not have a return trip collected is when the respondent moves his/her residence. ( Nationwide Personal Transportation Survey (NPTS) ) |
| Trip | Each time a person goes to a place at least 100 miles away from home and returns. Respondents were asked to report trips of 75 miles or more as a means of reducing possible failure in reporting trips of 100 miles or more due to a misconception by the respondent of the actual miles traveled. Trips subsequently calculated to be less than 100 miles were excluded from the estimates. A household trip refers to a trip in which one or more members of a household traveled together. A person trip refers to a trip taken by an individual. For example, if three persons from the same household go together on a trip, the trip is counted as one household trip and three person trips. If persons goes alone on two trips, the trips are counted as two household trips and two person trips. ( American Travel Survey (ATS) 1995 ) |
| Trip Break | Trip Breaks are points in the itinerary at which a passenger is assumed to have stopped for a reason other than changing planes. A break in the passenger's trip creates a market. For example: An itinerary BOS-LAS-BOS would have two markets BOS-LAS and LAS-BOS. The trip break occurred at LAS. ( Airline Origin and Destination Survey (DB1B) ) |
| Trip Chaining | A term used to refer to the phenomenon of making intermediate stops as part of a longer trip. For example, stopping at a convenience store or day care center as part of the trip from home to work. Chained trips were not reported in the 1990 Census data. ( Census Transportation Planning Package (CTPP) 1990 ) |
| Trip Purpose | The main reason that motivated the trip. For purposes of this survey, there are 11 trip reasons. For travel day trips, if there was more than one reason, and the reasons do not involve different destinations, then only the main reason is chosen. If there are two or more reasons, and they each involve different destinations, then each reason is classified as a separate trip. For travel period trips, if there was more than one reason, the primary reason was collected. The 11 trip reasons are defined as follows: To or from Work: Includes travel to a place where one reports for work. Does not include any other work-related travel. Work-related Business: Trips related to business activities except travel to the place of work; for example, a plumber drives to a wholesale dealer to purchase supplies for his business or a company executive travels from his office to another firm to attend a business meeting. Business, out- of-town trips, and professional conventions are also included. Shopping: Includes window-shopping and purchase of commodities such as groceries, furniture, clothing, etc. for use or consumption elsewhere. Doctor/Dentist: Trips made for medical, dental, or psychiatric treatment or other related professional services. Other family or personal business: Includes the purchase of services such as cleaning garments, servicing an automobile, haircuts, banking, legal services, etc. School/Church: Trips to school, college or university for class(es), to PTA meetings, seminars, etc., to church services or to participate in other religious activities. Social activities that take place at a church or school but cannot be classified as religious or educational are not included in this category. Vacation: Trips reported by the respondent as vacation. Visit friends or relatives: Trips made to visit friends or relatives. Pleasure driving: Driving trips made with no other purpose listed but to go for a drive with no destination in mind. Other social or recreational: Trips taken to enjoy some form of social activity involving friends or acquaintances. Includes trips for general entertainment or recreation (both as observer or as participant).Other social or recreational: Trips taken to enjoy some form of social activity involving friends or acquaintances. Includes trips for general entertainment or recreation (both as observer or as participant). Other: For trips that do not fit in any of the other categories. ( Nationwide Personal Transportation Survey (NPTS) ) |
| Truck | Shipments using for-hire truck only, private truck only, or a combination of for-hire truck and private truck. ( Commodity Flow Survey (CFS) ) |
| U |
| Term | Definition |
|---|
|
| USPS Codes | United States Postal Service (USPS) codes for States are used in all American Travel Survey (ATS) data products. The codes are two-character alphabetic abbreviations. These codes are the same as the FIPS two-character alphabetic abbreviations. ( American Travel Survey (ATS) 1995 ) |
| Unique Carrier | Unique Carrier Code. It is the Carrier Code most recently used by a carrier. A numeric suffix is used to distinguish duplicate codes, for example, PA, PA (1), PA (2). Use this field to perform analysis of data reported by one and only one carrier. ( Air Carrier Summary Data (Form 41 and 298C Summary Data), Air Carrier Statistics (Form 41 Traffic)- All Carriers, Air Carrier Financial Reports (Form 41 Financial Data), Airline On-Time Performance Data, Aviation Support Tables, Air Carrier Statistics (Form 41 Traffic)- U.S. Carriers ) |
| Unique Carrier Entity | Unique Carrier Entity. This field distinguishes entities used by two or more carriers with a numeric suffix, for example, 06038 and 06038 (1). ( Air Carrier Statistics (Form 41 Traffic)- U.S. Carriers, Aviation Support Tables, Air Carrier Financial Reports (Form 41 Financial Data), Air Carrier Statistics (Form 41 Traffic)- All Carriers, Air Carrier Summary Data (Form 41 and 298C Summary Data) ) |
| Unique Carrier Name | Unique Carrier Name. It is the name most recently used by a carrier. If two or more carriers have the same most recent name, a numeric suffix is used to distinguish them, for example, Air Caribbean, Air Caribbean (1). ( Air Carrier Financial Reports (Form 41 Financial Data), Air Carrier Summary Data (Form 41 and 298C Summary Data), Air Carrier Statistics (Form 41 Traffic)- All Carriers, Air Carrier Statistics (Form 41 Traffic)- U.S. Carriers, Aviation Support Tables ) |
| Urbanized Area | An approximate classification of sample households as belonging to an urbanized area. Those classified as belonging to an urbanized area were either in a central city of an MSA, or in a MSA but outside the central city, and within a zip code area with a population density of at least 500 people per square mile in 1990. ( Nationwide Personal Transportation Survey (NPTS) ) |
| Densely settled territory that contains 50,000 or more people. ( Census Transportation Planning Package (CTPP) 1990 ) |
| V |
| Term | Definition |
|---|
|
| Vacation Trip | Not listed as a main purpose of travel for the American Travel Survey. Respondents were asked whether or not a specific trip taken was considered as a vacation trip. Respondents were also asked the main purpose of a trip (e.g. sightseeing, outdoor recreation, entertainment, business, etc). ( American Travel Survey (ATS) 1995 ) |
| Value Of Shipment | The dollar value of the entire shipment. This is defined as the net selling value, f.o.b. plant, exclusive of freight charges, and excise taxes. The value data are displayed in millions of dollars. ( Commodity Flow Survey (CFS) ) |
| Vehicle Mile of Travel (VMT) | A unit to measure vehicle travel made by a private vehicle, such as an automobile, van, pickup truck, or motorcycle. Each mile traveled is counted as one vehicle mile regardless of the number of persons in the vehicle. ( Nationwide Personal Transportation Survey (NPTS) ) |
| Vehicle Occupancy | The number of persons, including driver and passenger(s) in a vehicle; also includes persons who did not complete a whole trip. NPTS occupancy rates are generally calculated as person miles divided by vehicle miles. ( Nationwide Personal Transportation Survey (NPTS) ) |
| Vehicle Trip | A trip by a single vehicle regardless of the number of persons in the vehicle. ( Nationwide Personal Transportation Survey (NPTS) ) |
| Vehicle Type | For purposes of the 1990 NPTS, nine vehicle types are: Automobile (including station wagon) Passenger Van Cargo Van Pickup Truck (including pickup with camper) Other Truck RV or Motor Home Motorcycle Moped (Motorized Bicycle) Other (Specify). See Means of Transportation for definitions of these vehicle types. ( Nationwide Personal Transportation Survey (NPTS) ) |
| Vehicles | Includes cars, trucks, vans, recreational vehicles (RVs), and motorcycles. The number and type of vehicles owned or available for use by the household. ( American Travel Survey (ATS) 1995 ) |
| W |
| Term | Definition |
|---|
|
| Water | Shipments using shallow draft vessel only, deep draft vessel only, or Great Lakes vessel only. Combinations of these modes, such as shallow draft vessel and Great Lakes vessel are included as Other multiple modes. ( Commodity Flow Survey (CFS) ) |
| Weekend Trip | A trip including an overnight stay on a Friday or a Saturday night. Travelers who stay one or two nights away including a Friday or Saturday night are defined as regular weekend travelers. Those who stay three to five nights away including a Friday and/or Saturday night stay are defined as long weekend travelers. ( American Travel Survey (ATS) 1995 ) |
| West North Central Division | Minnesota, Iowa, Missouri, North Dakota, South Dakota, Nebraska, Kansas ( American Travel Survey (ATS) 1995 ) |
| West South Central Division | Arkansas, Louisiana, Oklahoma, Texas ( American Travel Survey (ATS) 1995 ) |
| World Area Code (WAC) | Numeric codes used to identify geopolitical areas such as countries, states (U.S.), provinces (Canada), and territories or possessions of certain countries. The codes are used within the various data banks maintained by the Office of Airline Information (OAI) and are created by OAI. ( Air Carrier Summary Data (Form 41 and 298C Summary Data), Airline Origin and Destination Survey (DB1B), Air Carrier Statistics (Form 41 Traffic)- All Carriers, Air Carrier Statistics (Form 41 Traffic)- U.S. Carriers, Small Air Carrier Statistics (Form 298C Traffic Data), Airline On-Time Performance Data, Aviation Support Tables ) |
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