DATABASE NAME

     MILITARY: Major Military Installation Boundaries

DATABASE DESCRIPTION

     Boundaries of major military installations in the United
     States.

ORIGINATING AGENCY

     Military Traffic Management Command, Transportation
     Engineering Agency

AGENCY RESPONSIBLE FOR MAINTAINING DATA

     Military Traffic Management Command, Transportation
     Engineering Agency

CONTACT

     National Transportation Atlas Databases
     Bureau of Transportation Statistics
     U.S. Department of Transportation
     Washington, DC  20590
     (202) 366-DATA
     Internet:   info@bts.gov

SOURCE

     1:100,000 Census TIGER/Line files supplemented by editing
     performed by the Military Traffic Management Command,
     Transportation Engineering Agency

ACCURACY

     80 m (260 ft) root-mean square positional accuracy

TYPE OF GIS DATABASE

     Area database with polygons and links

FILES/SIZE/NUMBER OF RECORDS

     Two ASCII files
     1)   military.ply   polygon file contains area attributes
     2)   military.lin   link files contains link shapes

     Approximate size of files:    2,620,000 bytes
     Approximate number of areas:  400
     Approximate number of links:  29,800

FILE STRUCTURE

     The files are ASCII-comma delimited.  Character fields are
     enclosed in quotation marks.

     The Polygon File

   FIELD  ITEM                TYPE      REMARKS

     1    ID                  Num       Unique Identification
                                        number
     2    Area                Float     Area of province (sq mi)
     3    Name                Char      Name of province
     4    F47 ID              Num       F47 Identification number
     5    CFCC                Char      CFCC code
     6    Priority            Num       Priority code

     The Link File

   FIELD  ITEM                TYPE      REMARKS

     1    Polyleft            Num       Polygon Id to the left
                                        side of the link
     2    Polyright           Num       Polygon Id to the right
                                        side of the link
     3    N                   Num       Number of following
                                        Longitude-Latitude pairs
                                        in decimal degrees
     4    Longitude 1st pair  Float     Explicit decimal}
     5    Latitude 1st pair   Float     Explicit decimal} 

          Long.-Lat. pairs    Float     Shape points of the link
          repeat N-2 times    Float     in pairs of long.-lat.

          Longitude last pair Float     Explicit decimal}
          Latitude last pair  Float     Explicit decimal}

DISCUSSION

     This file was designed specifically as a shape file.  No
     additional attributes are planned.  However, additional
     information about the facilities in the file are available
     through the originating agency.