FLORIDA GEOGRAPHIC DATA LIBRARY DOCUMENTATION
VERSION 2006
TITLE: COMMERCIAL AIR SEGMENT NETWORK
Geodataset Name: BTSAW Geodataset Type: SHAPE Geodataset Feature: ARCS
GENERAL DESCRIPTION:
This dataset contains the Bureau of Transportation Statistics commercial air segment network.
DATA SOURCE(S): Bureau of Transportation Statistics SCALE OF ORIGINAL SOURCE MAPS: 1 : 100,000 DATE OF AUTOMATION OR SOURCE: 1992 GEODATASET EXTENT: State of Florida
FEATURE ATTRIBUTE TABLES
Datafile Name: BTSAW.DBF
NAME WIDTH TYPE PRECISION FNODE_ 5 DECIMAL - TNODE_ 5 DECIMAL - LPOLY_ 5 DECIMAL - RPOLY_ 5 DECIMAL - LENGTH 18 DECIMAL 5 BTSAW_ 5 DECIMAL - BTSAW_ID 5 DECIMAL - LINKID 10 DECIMAL - LRECTYPE 1 CHARACTER - LVERSION 2 CHARACTER - FEATURID 10 DECIMAL - ANODE 10 DECIMAL - BNODE 10 DECIMAL - DESCRIPT 10 DECIMAL -
FEATURE ATTRIBUTE TABLES CODES AND VALUES:
ITEM NAME DESCRIPTION
LINKID Unique sequential line identification number
LRECTYPE One character which defines the type of file from a data set, which
in this case is L.
LVERSION File version number
FEATURID Unique line identification number
ANODE Node identification for the beginning node of the line
BNODE Node identification for the ending node of the line
DESCRIPT Based on FEATURID
USER NOTES:
The data provide users with service information about commercial air segments
between commercial airports primarily for national planning applications.
Acknowledgment of the Bureau of Transportation Statistics National
Transportation Atlas Database would be appreciated in products derived from
these data.
Attribute Accuracy
Attribute Accuracy Report: Attributes were derived from the U.S. Department of
Transportation, Office of Airline Statistics (OAI), annual summary of monthly
T-100 reports of domestic certified air carriers Logical Consistency Report:
Each air segment record is a straight line connecting pairs of points
representing the locations of commercial U.S. airports. Each segment
represents a direct, non-stop commercial air route between the two end points.
Completeness Report: The air segments are complete for large U.S. certified air
carriers. Data on foreign flag air carriers is protected from public
disclosure by international agreement and has been excluded from this
database. Data on commuter airlines is not reported in the T-100 reports, and
has also been excluded from this database. Although some records were
modified, the data provider supplied no modification date(s), nor any change
code in the REVISION field. The REVISION field was dropped from the coverage
for since it has no records.the FGDL.
Positional Accuracy
Horizontal Positional Accuracy
Horizontal Positional Accuracy Report: Accuracy of the digital node data is
based upon the accuracy of the airport locations as defined in the metadata
for Public-Use Airports. The link information is not intended to represent
actual flight patterns and is not positionally accurate.
The airport points should carry the same longitude and latitude
values as the airway segment endpoints (carrying the LOCID as
FEATURID to match the points and nodes). In most cases they do.
FGDL QUALITY ASSURANCE STATUS:
-Tolerances were changed to FGDL standards.
-DESCRIPT item was added based on the FEATURID.
-Dropped items LREVISION, LMODDATE, STFIPS1 and STFIPS2 from BTSAW.AAT
REFERENCES:
DATA LINEAGE SUMMARY:
The data set was compiled by the Volpe National Transportation Systems Center under sponsorship of the Bureau of Transportation Statistics.
Source Information
Source Citation
Originator: Bureau of Transportation Statistics,
Office of Airline Information
Publication Date: 1992
Title: T-100 Domestic Segments
Publication Information
Publication Place: Washington, DC
Publisher: Bureau of Transportation Statistics,
Office of Airline Information
Type of Source Media: magnetic tape
Type of Source Media: cartridge tape
Type of Source Media: paper
Source Time Period of Content
Range of Dates/Times
Beginning Date: 199201
Ending Date: 199212
Currentness Reference: monthly reports
Source Citation Abbreviation: T-100
Source Contribution: Operating certified air carriers,
scheduled and actual flights, scheduled and actual
seats, number of passengers traveling non-stop
between segment endpoints.
Process Step
Process Description: Monthly reports were totaled to
produce an annual summary of flights, seats, and
enplaned passengers, by direction. Segment endpoints
were matched against public use airports using
landing facility's location identifier (LOCID) to
obtain the end point locations.
Process Date: 1994
MAP PROJECTION PARAMETERS:
Projection ALBERS Units METERS Datum HPGN Spheroid GRS1980 1st standard parallel 24 0 0.000 2nd standard parallel 31 30 0.000 central meridian -84 0 0.000 latitude of projection's origin 24 0 0.000 false easting (meters) 400000.00000 false northing (meters) 0.00000
DATA SOURCES CONTACT(S):
Name: Volpe Center
Address: Service Assessment Division, DTS-49, 55 Broadway, Cambridge,
Massachusetts 02142
Phone: 617 494 2588
Fax: 617 494 3260
Contact Person:
Email:
FGDL CONTACT:
Name: FLORIDA GEOGRAPHIC DATA LIBRARY
Abbr. Name: FGDL
Address: Florida Geographic Data Library
431 Architecture Building
PO Box 115706
Gainesville, FL 32611-5706
Web site: http://www.fgdl.org
Contact FGDL:
Technical Support: http://www.fgdl.org/fgdlfeed.html
FGDL Frequently Asked Questions: http://www.fgdl.org/fgdlfaq.html
FGDL Mailing Lists: http://www.fgdl.org/fgdl-l.html
For FGDL Software: http://www.fgdl.org/software.html