DATABASE NAME

     BRDR_XG:  U.S. Border Crossings

DATABASE DESCRIPTION

     Major border crossings between the United States and Canada
     and the United States and Mexico.

ORIGINATING AGENCY

     Volpe National Transportation Systems Center

AGENCY RESPONSIBLE FOR MAINTAINING DATA

     Bureau of Transportation Statistics

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

     Source documents used in the ISTEA Section 6015
     infrastructure assessment matched to the 1980 Census Master
     Area Reference File of Places by Volpe National
     Transportation Systems Center

ACCURACY

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

TYPE OF GIS DATABASE

     Point database with nodes

FILES/SIZE/NUMBER OF RECORDS

     One file

     1)   brdr_xg.pnt    node file contains node locations and
                         attributes

     Approximate size of file:          8,000 bytes
     Approximate number of points:      126

FILE STRUCTURE

     The file is ASCII-comma delimited.  Characters are enclosed
     in quotation marks.

     The Node File

   FIELD  ITEM                TYPE      REMARK
     1    ID                  Num       Unique Identification
                                        number
     2    Longitude           Float     Longitude of border
                                        crossing (decimal degrees
                                        with explicit decimal)
     3    Latitude            Float     Latitude of border
                                        crossing (decimal degrees
                                        with explicit decimal)
     4    Name                Char      Common U.S. name of
                                        Border Crossing.  Usually
                                        the name of the nearest
                                        U.S. town.
     5    State               Char      U.S. state in which the
                                        border crossing is
                                        located  (Postal Code)
     6    Type                Char      Defines the crossing as a
                                        land, bridge, or bridge-
                                        rail crossing
     7    Long1               Num       Future use
     8    Long2               Num       Future use
     9    Char1_Key           Char      Future use
     10   Char2               Char      Future use
     11   Real1               Float     Future use
     12   Real2               Float     Future use
     13   Real3               Float     Future use

DISCUSSION

     No additional discussion.