IDENTIFICATION INFORMATION
Data Set Identity:
National Highway Planning Network
Identification Code:
Version 3.0
Larger Work Citation
Originator: Bureau of Transportation Statistics (comp)
Publication Date: 2000
Title: National Transportation Atlas Databases
Publication Information
Publication Place: Washington, DC
Publisher: Bureau of Transportation Statistics
Data Set Description:
The National Highway Planning Network is a comprehensive
network database of the nation's major highway system. It
consists of over 400,000 miles of the nation's highways
comprised of Rural Arterials, Urban Principal Arterials and
all National Highway System routes. The data set covers the
48 contiguous States plus the District of Columbia, Alaska,
Hawaii, and Puerto Rico. The nominal scale of the data set is
1:100,000 with a maximal positional error of ±80 meters.
Keywords
Theme:
Theme Keyword Thesaurus: None
Theme Keyword: Network
Theme Keyword: Highways
Theme Keyword: Interstate
Place
Place Keyword: United States
Bounding Coordinates:
West Bounding Coordinate: -176.746361
East Bounding Coordinate: 179.456371
North Bounding Coordinate: 71.316577
South Bounding Coordinate: 17.932412
Data Set Citation:
"National Highway Planning Network Version 3.0 Machine
Readable Data Files" prepared by the Federal Highway
Administration, Office of Environment and Planning (HEP-10),
Washington DC, 1999
Data Set Credit:
The NHPN Version 3.0 database was created on behalf of FHWA
by members of the Geographic Information Systems Laboratory,
Systems Development Institute, The University of Tennessee,
Knoxville
Use Restrictions:
The NHPN Version 3.0 database, or any portion thereof, can be
freely distributed as long as this metadata entry is included
with each distribution. The original metadata entry cannot be
modified or deleted from any data transfer
Contact Person Primary
Contact Person: Mr. Aung Gye
Contact Organization: Office of Environment and
Planning, HEP-10
Contact Organization: The Federal Highway Administration
Contact Address
Address Type: mailing address
Address: 400 Seventh Street, SW
City: Washington
State or Province: DC
Postal Code: 20590
Contact Voice Telephone: (202) 366-2167
Contact Facsimile Telephone: (202) 493-2198
Contact Instructions: Between hours of 9 am and
3 p.m. Eastern Standard Time.
DATA QUALITY INFORMATION
Beginning Date of Information Content:
1992
Ending Date of Information Content:
1999
Thematic Quality:
Thematic Accuracy Report: The accuracy of the fields FCLASS
and STRAHNET from the description section of the link table
is consistent with State supplied information for the years
1992 and 1993.
The accuracy of the fields MILES, KM, SIGN1, and NHS from
the description section of the link table is consistent
with State supplied information for the years 1992 through
1999.
All other attributes in the description of the link table
are unverified.
Logical Consistency Report:
All node and link topological relationships and
uniqueness of entity IDs are verified by computer
algorithm.
Completeness Report:
The complete urban principal arterial system and
arterials in rural areas as reported to FHWA by
December 1992 are inventoried in the database.
The complete National Highway System is as reported
to the FHWA by September 1999.
Functional classes below arterial vary on a State by
State basis.
Positional Quality:
Horizontal Positional Quality:
Horizontal Positional Accuracy Report:
The elements of the NHPN have been conflated to
the 1:100,000 DLG-3 data set which maintains a
nominal accuracy of at least +/-80 meters. Where new
roads have been added which are not in the DLG-3
database link alignments have been digitized or
converted from digital sources acquired from State
DOTs with a map scale of at least 1:100,000.
SPATIAL DATA ORGANIZATION INFORMATION
Direct Spatial Reference Method:
Vector
Point and Vector Object Information:
Vector Object Information:
SDTS Vector Object Type:
"Node, network"
Vector Object Count:
125,797 nodes
SDTS Vector Object Type:
"Network Chain, non-planar graph"
Vector Object Count:
162,418 chains
SPATIAL REFERENCE INFORMATION
Horizontal Coordinate System Definition:
Geographic:
Latitude Resolution:
0.000464
Longitude Resolution:
0.000464
Geographic Coordinate Units:
"Decimal Degrees"
Geodetic Model
Horizontal Datum Name: North American Datum of 1983
Ellipsoid Name: Geodetic Reference System (GRS) 1980
STATUS INFORMATION
Data Set Status:
Available
Release Date:
19991001
Maintenance And Update Frequency:
Annual
LINEAGE
Source Information:
Source Citation:
"National Highway Planning Network V1.1, Bruce
Peterson, Oak Ridge National Laboratory, 1992"
Source Citation Abbreviation:
NHPN V1
Beginning Date of Source Currentness:
19920701
Source Contribution:
Non-verified attributes for rural highways.
Source Information:
Source Citation:
USGS Digital Line Graph (DLG-3) Series
Source Citation Abbreviation:
DLG-3
Beginning Date of Source Currentness:
1978
Source Contribution:
Road alignments for rural and urban highways.
Source Information:
Source Citation:
State supplied digital and map data
Source Citation Abbreviation:
State Data
Beginning Date of Source Currentness:
19921231
Source Contribution:
Alignments and attributes for urban highways. Sign
route and function class attributes for principal
arterial system.
Source Information:
Source Citation: State supplied digital and map data
Source Citation Abbreviation: State Data
Beginning Date of Source Currentness: 19931101
Source Contribution: Alignments, sign route NHS
classification for National
Highway System.
Source Information:
Source Citation: State supplied digital and map data
Source Citation Abbreviation: State Data
Beginning Date of Source Currentness: 19931101
Source Contribution: Linear Referencing System Attributes
Source Information:
Source Citation: CENSUS TIGER/Line 1994
Source Citation Abbreviation: TIGER
Beginning Date of Source Currentness: 1994
Source Contribution: Alignment, shape and location of ramp
features
Process Step:
Process Description:
Conflation of NHPN V1 to DLG-3 road alignments using
R-MATCH software developed by the Geographic
Information Systems Group, University of Tennessee.
Source Used Citation Abbreviation:
NHPN V1
Source Used Citation Abbreviation:
DLG-3
Process Date:
19930701
Process Step:
Process Description:
Digitizing and conversion of state supplied digital
and map data. Line work geodetically controlled to
match DLG-3 line work.
Source Used Citation Abbreviation:
State Data
Source Used Citation Abbreviation:
DLG-3
Process Date:
19931231
Process Step:
Process Description:
Integration of conflated version of NHPN V1 and
assimilated State Data into a comprehensive
topologically integrated network database. States
edgematched and NHS attributes verified.
Process Date:
19940915
Process Step:
Process Description: Integration of supplemental State
Data into the NHPN V2. NHS attributes verified.
Process Date: 19970115
Process Step:
Process Description: Integration of supplemental State
data used for LRS attribute information.
Process Date: 19980101
Process Step:
Process Description: Integration of intermodal connector
links into the NHPN V2. States edgematched and NHS
attributes verified.
Process Date: 19980101
Process Step:
Process Description: Attachment of a Linear Referencing
System to the NHPN V2. State Data used for LRS attribute
information.
Process Date: 19991001
Process Step:
Process Description: Integration of Ramp Group Cordon
Boundary nodes into the NHPN for future addition of ramp
group features. States edgematched, NHS attributes
verified, and national LRSKEY added to facilitate a
national route system.
Process Date: 19991001
ENTITY AND ATTRIBUTE INFORMATION
Entity And Attribute Overview: A full discussion of the file
structures and data schema for NHPN V3.0 is available in
the NHPN V3.0 document.
Entity And Attribute Detail Citation: Schultze, Michael and
Blake Sartin, (1999) "National Highway Planning Network
V3.0: Data Schema and File Structures", Report prepared for
the Federal Highway Administration, HEP-10.
Entity_Type:
Entity_Type_label: NHPN.LNK
Entity_Type_Definition: Line Attribute Table
Entity_Type_Definition_Source:
Field Field Field Field Beg End Field
Number Name Type Length Pos Pos Description
1 RECTYPE C 1 1 1 Record Type: always 'L'
2 VERSION C 2 2 3 File version number
3 REVISION C 2 4 5 Record revision number
4 MODDATE I 8 6 13 Record modification date
5 LINEID I 10 14 23 Unique sequential line
identification
6 FEATURID I 10 24 33 Unique line identification
7 ANODE I 10 34 43 Node identification for the
beginning node of the line
8 BNODE I 10 44 54 Node identification for the
ending node of the line
9 DESCRIPT C 35 55 88 Name or identification for
the line feature
10 STFIPS1 C 2 89 90 Primary State FIPS Code
11 STFIPS2 C 2 91 92 Secondary State FIPS Code
Attribute:
Attribute_Label: RECTYPE
Attribute_Definition: One character which defines the type
of file from a data set.
Attribute_Definition_Source: Assigned
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: L
Attribute:
Attribute_Label: VERSION
Attribute_Definition: File version number
Attribute_Definition_Source: Assigned
Attribute_Domain_Values:
Attribute:
Attribute_Label: REVISION
Attribute_Definition: Record revision number
Attribute_Definition_Source: Assigned
Attribute_Domain_Values:
Attribute:
Attribute_Label: MODDATE
Attribute_Definition: Record Modification Date
Attribute_Definition_Source: Assigned
Attribute_Domain_Values:
Attribute:
Attribute_Label: LINEID
Attribute_Definition: Unique line identification number
Attribute_Definition_Source: Assigned
Attribute_Domain_Values:
Attribute:
Attribute_Label: FEATURID
Attribute_Definition: Unique line identifier
Attribute_Definition_Source: Assigned
Attribute_Domain_Values:
Attribute:
Attribute_Label: ANODE
Attribute_Definition: The record in the node file (FEATURID)
that corresponds to the starting position of the link
Attribute_Definition_Source: Assigned
Attribute_Domain_Values:
Attribute:
Attribute_Label: BNODE
Attribute_Definition: The record in the node file (FEATURID)
that corresponds to the ending position of the link
Attribute_Definition_Source: Assigned
Attribute_Domain_Values:
Attribute:
Attribute_Label: DESCRIPT
Attribute_Definition: Name or identification for the link
Attribute_Definition_Source:
Attribute_Domain_Values:
Attribute:
Attribute_Label: STFIPS1
Attribute_Definition: Two digit State FIPS Code
Attribute_Definition_Source: FIPS Pub 6-4
Attribute_Domain_Values:
Codeset_Domain:
Codeset_Name: Federal Information Processing
Standard
Attribute:
Attribute_Label: STFIPS2
Attribute_Definition: Two digit State FIPS Code
Attribute_Definition_Source: FIPS Pub 6-4
Attribute_Domain_Values:
Codeset_Domain:
Codeset_Name: Federal Information Processing
Standard
Entity_Type:
Entity_Type_label: NHPN.NOD
Entity_Type_Definition: Node Attribute Table
Entity_Type_Definition_Source:
Field Field Field Field Beg End Field
Number Name Type Length Pos Pos Description
1 RECTYPE C 1 1 1 Record Type: always 'N'
2 VERSION C 2 2 3 File version number
3 REVISION C 2 4 5 Record revision number
4 MODDATE I 8 6 13 Record modification date
5 NODEID I 10 14 23 Unique sequential node
identification
6 FEATURID I 10 24 33 Unique node
identification
7 LONGITUD I 10 34 43 Longitude (6 implied
decimal places)
8 LATITUDE I 10 44 53 Latitude (6 implied
decimal places)
9 DESCRIPT C 35 54 88 Name or identification
of the node
10 STFIPS C 2 89 90 State FIPS Code
Attribute:
Attribute_Label: RECTYPE
Attribute_Definition: One character which defines the type
of file from a data set.
Attribute_Definition_Source: Assigned
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: N
Attribute:
Attribute_Label: VERSION
Attribute_Definition: File version number
Attribute_Definition_Source: Assigned
Attribute_Domain_Values:
Attribute:
Attribute_Label: REVISION
Attribute_Definition: Record revision number
Attribute_Definition_Source: Assigned
Attribute_Domain_Values:
Attribute:
Attribute_Label: MODDATE
Attribute_Definition: Record Modification Date
Attribute_Definition_Source: Assigned
Attribute_Domain_Values:
Attribute:
Attribute_Label: NODEID
Attribute_Definition: Unique sequential node identification
Attribute_Definition_Source: Assigned
Attribute_Domain_Values:
Attribute:
Attribute_Label: FEATURID
Attribute_Definition: unique node identification number
Attribute_Definition_Source: Assigned
Attribute_Domain_Values:
Attribute:
Attribute_Label: LONGITUD
Attribute_Definition: The longitude of the node expressed as
a signed integer with six implied decimal places
Attribute_Definition_Source:
Attribute_Domain_Values:
Attribute:
Attribute_Label: LATITUDE
Attribute_Definition: The latitude of the node expressed as
a signed integer with six implied decimal places
Attribute_Definition_Source:
Attribute_Domain_Values:
Attribute:
Attribute_Label: DESCRIPT
Attribute_Definition: Node name or identification
Attribute_Definition_Source:
Attribute_Domain_Values:
Attribute:
Attribute_Label: STFIPS
Attribute_Definition: Two digit State FIPS Code
Attribute_Definition_Source: FIPS Pub 6-4
Attribute_Domain_Values:
Codeset_Domain:
Codeset_Name: Federal Information Processing
Standard
Entity_Type:
Entity_Type_label: NHPN.GEO
Entity_Type_Definition:
Entity_Type_Definition_Source:
Field Field Field Field Beg End Field
Number Name Type Length Pos Pos Description
1 RECTYPE C 1 1 1 Record Type: always 'G'
2 VERSION C 2 2 3 File version number
3 REVISION C 2 4 5 Record revision number
4 MODDATE I 8 6 13 Record modification date
5 LINEID I 10 14 23 Unique sequential line
identification
6 blank 20 24 43 blank
7 NPOINT I 3 44 46 Number of coordinate pairs
that define the linear
feature the coordinate
pairs then follow on
subsequent lines in the
file
Attribute:
Attribute_Label: RECTYPE
Attribute_Definition: One character which defines the type
of file from a data set.
Attribute_Definition_Source: Assigned
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: G
Attribute:
Attribute_Label: VERSION
Attribute_Definition: File version number
Attribute_Definition_Source: Assigned
Attribute_Domain_Values:
Attribute:
Attribute_Label: REVISION
Attribute_Definition: Record revision number
Attribute_Definition_Source: Assigned
Attribute_Domain_Values:
Attribute:
Attribute_Label: MODDATE
Attribute_Definition: Record Modification Date
Attribute_Definition_Source: Assigned
Attribute_Domain_Values:
Attribute:
Attribute_Label: LINEID
Attribute_Definition: Unique line identification number
Attribute_Definition_Source: Assigned
Attribute_Domain_Values:
Attribute:
Attribute_Label: blank
Attribute_Definition:
Attribute_Definition_Source:
Attribute_Domain_Values:
Attribute:
Attribute_Label: NPOINT
Attribute_Definition: The number of coordinate pairs that
define the linear feature. The coordinate pairs then
follow - up to four coordinate pairs per line, field
length ten each per longitude and latitude with six
implied decimal places
Attribute_Definition_Source: calculated
Attribute_Domain_Values:
Attribute:
Attribute_Label: LONGITUD
Attribute_Definition: The longitude of the node expressed
as a signed integer with six implied decimal places
Attribute_Definition_Source:
Attribute_Domain_Values:
Attribute:
Attribute_Label: LATITUDE
Attribute_Definition: The latitude of the node expressed as
a signed integer with six implied decimal places
Attribute_Definition_Source:
Attribute_Domain_Values:
Entity_Type:
Entity_Type_label: NHPN.TL1
NHPN_TL1.DBF
Entity_Type_Definition: Line Attribute Table
Entity_Type_Definition_Source: Federal Highway
Administration, Office of Environment and
planning, HEP-10
Field Field Field Field Beg End Field
Number Name Type Width Pos Pos Description
1 RECTYPE C 1 1 1 Record Type: Always 'T'
2 VERSION C 2 2 3 File version number
3 REVISION C 2 4 5 Record revision number
4 MODDATE I 8 6 13 Record Modification Date
5 FEATURID I 10 14 23 Unique identifier
6 LINEID I 10 24 33 Sequential Unique
Identifier
7 SOURCE C 1 34 34 Original source of the
coordinate information
8 STFIPS C 2 35 36 State FIPS Code
9 CTYFIPS C 3 37 39 County FIPS Code
10 LGURB I 3 40 42 Adjusted Urbanized Area
11 SMURB I 5 43 47 Adjusted Small Urban Area
12 SIGN1 C 6 48 53 Composite field:
1 48 48 SIGNT1
4 49 52 SIGNN1
1 53 53 SIGNQ1
13 SIGN2 C 6 54 59 Composite field:
1 54 54 SIGNT2
4 55 58 SIGNN2
1 59 59 SIGNQ2
14 SIGN3 C 6 60 65 Composite field:
1 60 60 SIGNT3
4 61 64 SIGNN3
1 65 65 SIGNQ3
15 MILES N 6 66 71 Measurement in miles
16 KM N 6 72 77 Measurement in kilometers
17 FACTYPE I 1 78 78 Permissible flow of traffic
18 TOLL I 1 79 79 Links which have one or
more toll features
19 LANES I 2 80 81 Number of through lanes in
both directions
20 ACONTROL I 1 82 82 Access control to the link
from adjoining roads
21 MEDIAN I 1 83 83 Type of median
22 SURFACE I 1 84 84 Predominant surface type
23 FCLASS I 2 85 86 Assigned functional class
24 ACLASS C 1 87 87 Administrative class
25 RUCODE I 1 88 88 Rural/Urban classification
26 STATUS I 1 89 89 Describes availability to
through traffic
27 NHS I 1 90 90 Special subnetwork for the
Proposed National Highway
System
28 STRAHNET I 1 91 91 Special subnetwork for the
Strategic Highway Corridor
Network
29 TRANSAM I 1 92 92 Special subnetwork for the
Trans-America corridor
30 SPECSYST I 2 93 94 Special FHWA Flag
Attribute:
Attribute_Label: RECTYPE
Attribute_Definition: One character which defines the type
of file from a data set.
Attribute_Definition_Source: Assigned
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: T
Attribute:
Attribute_Label: VERSION
Attribute_Definition: File version number
Attribute_Definition_Source: Assigned
Attribute_Domain_Values:
Attribute:
Attribute_Label: REVISION
Attribute_Definition: Record revision number
Attribute_Definition_Source: Assigned
Attribute_Domain_Values:
Attribute:
Attribute_Label: MODDATE
Attribute_Definition: Record Modification Date
Attribute_Definition_Source: Assigned
Attribute_Domain_Values:
Attribute:
Attribute_Label: FEATURID
Attribute_Definition: Unique line identifier
Attribute_Definition_Source: Assigned
Attribute_Domain_Values:
Attribute:
Attribute_Label: LINEID
Attribute_Definition: Unique line identification number
Attribute_Definition_Source: Assigned
Attribute_Domain_Values:
Attribute:
Attribute_Label: SOURCE
Attribute_Definition: The Source Flag is used to identify
the original source of the coordinate information.
Attribute_Definition_Source: Assigned
Attribute_Domain_Values:
Enumerated Domain:
Enumerated_Domain_Value:
S - State Supplied Digital Data
U - USGS Digital Line Graphs
T - US Census Tiger/Line files
D - Digitized from State supplied maps
M - Military Supplied data
Attribute:
Attribute_Label: STFIPS
Attribute_Definition: : Two digit State FIPS Code
Attribute_Definition_Source: FIPS Pub 6-4
Attribute_Domain_Values:
Codeset_Domain:
Codeset_Name: Federal Information Processing Standard
Attribute:
Attribute_Label: CTFIPS
Attribute_Definition: Threee digit County FIPS Code
Attribute_Definition_Source: FIPS Pub 6-4
Attribute_Domain_Values:
Codeset_Domain:
Codeset_Name: Federal Information Processing Standard
Attribute:
Attribute_Label: LGURB
Attribute_Definition: Large Urbanized Area
Attribute_Definition_Source: US Census
Attribute_Domain_Values:
Range Domain:
Range_Domain_Value: 0 - 999
Attribute:
Attribute_Label: SMURB
Attribute_Definition: Adjusted Small Urban Area
Attribute_Definition_Source:
Attribute_Domain_Values:
Range Domain:
Range_Domain_Value: 0 - 99999
Attribute:
Attribute_Label: SIGN1
Attribute_Definition: Primary Sign Route
Attribute_Definition_Source: FHWA
Attribute_Domain_Values:
Enumerated Domain:
Enumerated_Domain_Value: Composite field of SIGNT1,
SIGNN1, and SIGNQ1
Note: The SIGNT1 field is followed by a left-adjusted sign
route number (SIGNN1) for the route. The SIGNR field
can contain alpha characters to allow for actual sign
route numbers such as route A1A in Florida. Using
HPMS standards, an optional directional indicator
(N, S, E, W) can also be used as part of the SIGNN1
field. The Sign Route Number is followed by an
optional Sign Route Qualifier Record (SIGNQ1) which
is used to qualify the sign route description
Subield: SIGNT1
Attribute_Definition:
Enumerated Domain:
Enumerated_Domain_Value:
(blank) - not signed
I - Interstate
U - US Route
S - State Route
O - Off-Interstate Business Marker
C - County Route
T - Township
M - Municipal
P - Parkway or Forest Route Marker
N - None of the above
Subield: SIGNN1
Attribute_Definition:
Enumerated Domain:
Enumerated_Domain_Value: A-Z, 0-9
Subield: SIGNQ1
Attribute_Definition:
Enumerated Domain:
Enumerated_Domain_Value:
(blank) - No qualifier, not signed, or not
applicable
A - Alternate Route
B - Business Route
P - Bypass
S - Spur
L - Loop
F - Proposed (future)
D - Temporary (detour)
T - Truck Route
N - None of the above
Attribute:
Attribute_Label: SIGN2
Attribute_Definition: Alternate Sign Route
Attribute_Definition_Source: FHWA
Attribute_Domain_Values:
Enumerated Domain:
Enumerated Domain value: Composite Field containing
SIGNT2, SIGNN2, and SIGNQ2
Subield: SIGNT2
Attribute_Definition:
Enumerated Domain:
Enumerated_Domain_Value:
(blank) - not signed
I - Interstate
U - US Route
S - State Route
O - Off-Interstate Business Marker
C - County Route
T - Township
M - Municipal
P - Parkway or Forest Route Marker
N - None of the above
Subield: SIGNN2
Attribute_Definition:
Enumerated Domain:
Enumerated_Domain_Value: A-Z, 0-9
Subield: SIGNQ2
Attribute_Definition:
Enumerated Domain:
Enumerated_Domain_Value:
(blank) - No qualifier, not signed, or not
applicable
A - Alternate Route
B - Business Route
P - Bypass
S - Spur
L - Loop
F - Proposed (future)
D - Temporary (detour)
T - Truck Route
N - None of the above
Attribute:
Attribute_Label: SIGN3
Attribute_Definition: Alternate Sign Route
Attribute_Definition_Source: FHWA
Attribute_Domain_Values:
Enumerated Domain:
Enumerated Domain value: Composite Field containing
SIGNT3, SIGNN3, and SIGNQ3
Subield: SIGNT3
Attribute_Definition:
Enumerated Domain:
Enumerated_Domain_Value:
(blank) - not signed
I - Interstate
U - US Route
S - State Route
O - Off-Interstate Business Marker
C - County Route
T - Township
M - Municipal
P - Parkway or Forest Route Marker
N - None of the above
Subield: SIGNN3
Attribute_Definition:
Enumerated Domain:
Enumerated_Domain_Value: A-Z, 0-9
Subield: SIGNQ3
Attribute_Definition:
Enumerated Domain:
Enumerated_Domain_Value:
(blank) - No qualifier, not signed, or not
applicable
A - Alternate Route
B - Business Route
P - Bypass
S - Spur
L - Loop
F - Proposed (future)
D - Temporary (detour)
T - Truck Route
N - None of the above
Attribute:
Attribute_Label: MILES
Attribute_Definition: An accurate measurement in miles for
the link chain. Contains two (2) implied decimal
places and is calculated from the link chain
Attribute_Definition_Source: calculated
Attribute_Domain_Values:
Attribute:
Attribute_Label: KM
Attribute_Definition: An accurate measurement in kilometers
for the link chain. Contains two (2) implied decimal
places and is calculated from the MILES field
Attribute_Definition_Source: calculated
Attribute_Domain_Values:
Attribute:
Attribute_Label: FACTYPE
Attribute_Definition: Describes the permissible flow of
traffic over the link
Attribute_Definition_Source:
Attribute_Domain_Values:
Enumerated Domain:
Enumerated_Domain_Value: 1 - One way flow
2 - bi-directional flow
Attribute:
Attribute_Label: TOLL
Attribute_Definition: Identifies links which have one or
more toll features associated with travel along the link
Attribute_Definition_Source:
Attribute_Domain_Values:
Enumerated Domain:
Enumerated_Domain_Value: 0 - Not A Toll Road
1 - Toll Road
Attribute:
Attribute_Label: LANES
Attribute_Definition: Number of lanes in both directions
Attribute_Definition_Source:
Attribute_Domain_Values:
Enumerated Domain:
Enumerated_Domain_Value: 0 - 99
Attribute:
Attribute_Label: ACONTROL
Attribute_Definition: Describes the degree of access
control to the link from adjoining roads
Attribute_Definition_Source:
Attribute_Domain_Values:
Enumerated Domain:
Enumerated_Domain_Value: 0 - Unknown
1 - Full Access Control
2 - Partial Access Control
3 - No Access Control
Note: Classification of Access Control should be
consistent with HPMS Guidelines
Attribute:
Attribute_Label: MEDIAN
Attribute_Definition: Describes the type of median
Attribute_Definition_Source:
Attribute_Domain_Values:
Enumerated Domain:
Enumerated_Domain_Value: 0 - Unknown
1 - Divided Highway
2 - Undivided Highway
Attribute:
Attribute_Label: SURFACE
Attribute_Definition: Identifies the predominant surface
type on the link
Attribute_Definition_Source:
Attribute_Domain_Values:
Enumerated Domain:
Enumerated_Domain_Value: 0 - Unknown
1 - Paved
2 - Unpaved
3 - Ferry
Attribute:
Attribute_Label: FCLASS
Attribute_Definition: Identifies the assigned functional
class of each link. The Functional Class represents
the assigned classification from the 1992 Functional
Reclassification by State agencies
Attribute_Definition_Source: Standarad HPMS Codes
Attribute_Domain_Values:
Enumerated Domain:
Enumerated_Domain_Value:
01 - Rural Interstate
02 - Rural Principal Aterial
06 - Rural Minor Arterial
07 - Rural Major Collector
08 - Rural Minor Collector
09 - Rural Local
11 - Urban Interstate
12 - Urban Freeway or Expressway
14 - Urban Principal Arterial
16 - Urban Minor Arterial
17 - Urban Collector
19 - Urban Local
Attribute:
Attribute_Label: ACLASS
Attribute_Definition: Administrative class associated with
the link (Federal Aid System)
Attribute_Definition_Source:
Attribute_Domain_Values:
Enumerated Domain:
Enumerated_Domain_Value:
(blank) - Federal-Aid status unknown
I - Federal-Aid Interstate
P - Federal-Aid Primary
S - Federal-Aid Secondary
U - Federal-Aid urban
N - Not on Federal-Aid System
F - Direct Federal System
Attribute:
Attribute_Label: RUCODE
Attribute_Definition: Rural/Urban classification
Attribute_Definition_Source:
Attribute_Domain_Values:
Enumerated Domain:
Enumerated_Domain_Value:
1 - Rural
2 - Small Urban (1990 pop 5,000-49,999)
3 - Large Urban (1990 pop 50,000)
Attribute:
Attribute_Label: STATUS
Attribute_Definition: Describes availability of the link
to through traffic
Attribute_Definition_Source:
Attribute_Domain_Values:
Enumerated Domain:
Enumerated_Domain_Value:
0 - Proposed/Under construction
1 - Open to traffic
Attribute:
Attribute_Label: NHS
Attribute_Definition: Special subnetwork for the proposed
National Highway System
Attribute_Definition_Source:
Attribute_Domain_Values:
Enumerated Domain:
Enumerated_Domain_Value:
0 - Not on NHS
1 - Interstate
2 - ISTEA High Priority Corridor
3 - Non-Interstate STRAHNET
4 - STRAHNET Connector
5 - ISTEA High Priority Corridor/
Non-Interstate STRAHNET
6 - ISTEA High Priority Corridor
STRAHNET Connector
7 - Other NHS
Note: The definition of the complete ISTEA High Priority
Corridor subnetwork can be made by selecting NHPN
links that have a NHS value of 2, 5, or 6
Attribute:
Attribute_Label: STRAHNET
Attribute_Definition: Special subnetwork for the Strategic
Highway Corridor Network
Attribute_Definition_Source:
Attribute_Domain_Values:
Enumerated Domain:
Enumerated_Domain_Value:
0 - Not on STRAHNET
1 - Non-Interstate STRAHNET link
2 - STRAHNET Priority 1 Connector
3 - STRAHNET Priority 2 Connector
4 - STRAHNET Priority 3 Connector
5 - Temporary STRAHNET Route
Attribute:
Attribute_Label: TRANSAM
Attribute_Definition: Special subnetwork for the
TransAmerica corridor
Attribute_Definition_Source:
Attribute_Domain_Values:
Enumerated Domain:
Enumerated_Domain_Value:
0 - Not on the Trans-America corridor
1 - Trans-America corridor link
Notes: The TRANSAM field describes a representation of
what the Trans-America corridor could look like. At
the time of documentation no Trans-America corridor
has been defined. The definition of the represented
corridor is due to Bruce Peterson, Oak Ridge
National Laboratory
Attribute:
Attribute_Label: SPECSYST
Attribute_Definition: Flag for special projects within the FHWA
used to define networks for special analysis purposes.
Attribute_Definition_Source: assigned
Attribute_Domain_Values:
Entity_Type:
Entity_Type_label: NHPN.TN1
NHPN_TN1.DBF
Entity_Type_Definition: Node Attribute Table
Entity_Type_Definition_Source: Federal Highway
Administration, Office of Environment and
planning, HEP-10
Field Field Field Field Beg End Field
Number Name Type Width Pos Pos Description
1 RECTYPE C 1 1 1 Record Type: Always 'T'
2 VERSION C 2 2 3 File version number
3 REVISION C 2 4 5 Record revision number
4 MODDATE I 8 6 13 Record Modification Date
5 FEATURID I 10 14 23 Unique Node Identifier
6 NODEID I 10 24 33 Sequential unique node
identifier
7 STFIPS C 2 34 35 State FIPS Code
8 CTYFIPS C 3 36 38 County FIPS Code
9 LGURB I 3 39 41 Three digit HPMS Urbanized
Area code
10 SMURB I 5 42 46 Five digit CENSUS Adjusted
Small Urban Area Code
11 BNDRY I 2 47 48 To designate boundary node
Attribute:
Attribute_Label: RECTYPE
Attribute_Definition: One character which defines the type
of file from a data set.
Attribute_Definition_Source: Assigned
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: T
Attribute:
Attribute_Label: VERSION
Attribute_Definition: File version number
Attribute_Definition_Source: Assigned
Attribute_Domain_Values:
Attribute:
Attribute_Label: REVISION
Attribute_Definition: Record revision number
Attribute_Definition_Source: Assigned
Attribute_Domain_Values:
Attribute:
Attribute_Label: MODDATE
Attribute_Definition: Record Modification Date
Attribute_Definition_Source: Assigned
Attribute_Domain_Values:
Attribute:
Attribute_Label: FEATIRID
Attribute_Definition: Unique node identification
Attribute_Definition_Source: Assigned
Attribute_Domain_Values:
Attribute:
Attribute_Label: NODEID
Attribute_Definition: Unique node identification
Attribute_Definition_Source: Assigned
Attribute_Domain_Values:
Attribute:
Attribute_ Label: STFIPS
Attribute_ Definition: State FIPS Code
Attribute_ Definition_Source: FIPS Pub 6-4
Attribute_Domain_Values:
Codeset Domain:
Codeset Name: Federal Information Processing Standard
Attribute:
Attribute_Label: CTYFIPS
Attribute_Definition: County Federal Information Processing
Standard Code
Attribute_Definition_Source: FIPS Pub 6-4
Attribute_Domain_Values:
Codeset Domain:
Codeset Name: Federal Information Processing Standard
Attribute:
Attribute_Label: LGURB
Attribute_Definition: Three digit HPMS Urbanized Area code
for the Adjusted Urbanized Area in which the node lies.
A value of 0 indicates the node is outside any HPMS
Adjusted Urbanized Areas. Nodes which lie on the
boundary of an Urbanized Area will have a LGURB
value of zero
Attribute_Definition_Source:
Attribute_Domain_Values:
Range Domain:
Range_Domain_Value: 0 - 999
Attribute:
Attribute_Label: SMURB
Attribute_Definition: Five digit CENSUS Adjusted Small Urban
Area code for cities under 50,000 population in 1990. A
value of 0 indicates the node is outside any Adjusted
Small Urban Area. Nodes which lie on the boundary of a
small urban area will have a SMURB value of zero
Attribute_Definition_Source:
Attribute_Domain_Values:
Range Domain:
Range_Domain_Value: 0 - 99999
Attribute:
Attribute_Label: BNDRY
Attribute_Definition: The BNDRY Flag is used to identify
nodes which lie on the boundary of logical polygons
maintained within NHPN
Attribute_Definition_Source:
Attribute_Domain_Values:
Enumerated Domain:
Enumerated_Domain_Value:
0 - Not a boundary node
1 - County Boundary
2 - Adjusted Urbanized Area
4 - Adjusted Small Urban Area
10 - State Border
Note: The values for BNDRY are additive and can be used to
describe a node which lies on the border of more than
one boundary. For example a node at a State border will
also be a county border node and will therefore, have a
value of 1 + 10 = 11. Similarly a node which lies on
the boundary of an Urbanized Area and a small urban
area will have a BNDRY value of 4 + 2 = 6. If it were
also a county boundary it would have a value
of 1 + 2 + 4 = 7.
Distribution Information
Distributor
Contact Organization Primary
Contact Organization: BTS Product Distribution Center
Contact Address
Address Type: mailing and physical address
Address: 400 Seventh Street, SW
City: Washington
State or Province: DC
Postal Code: 20590
Contact Voice Telephone: 1 202 366 DATA
Contact Facsimile Telephone: 1 202 366 3640
Contact Electronic Mail Address: orders@bts.gov
Resource Description: National Transportation Atlas
Database 2000
Distribution Liability: None
Standard Order Process
Digital Form
Digital Transfer Information
Format Name: BTS (Bureau of Transportation Statistics
standard format for spatial data)
Format Information Content: The BTS standard format for
spatial data is an interim format for distributing
National Transportation Atlas Databases pending final
approval of an SDTS Transportation Network Profile
(TNP). The BTS standard format consists of a linked
set of ASCII fixed record length files. File formats
and data dictionary for the BTS standard format are
described in the document, National Transportation
Atlas Data Dictionary and Database Formats', September
1995. Copies of this documentation are distributed
with each National Transportation Atlas Database.
File Decompression Technique: No compression applied.
However, if using digital transfer online option, note
access instructions.
Transfer Size: 132 megabytes
Digital Transfer Option
Online Option
Computer Contact Information
Network Address
Network Resource Name: www.bts.gov/gis/
Access Instructions: Anyone with access to the Internet
may connect to the BTS web server. To access a
specific data set, go to the web address listed above
in the Network Resource Name. The BTS server allows
allows visitors to create an archive package for
download in one of three common formats:
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.tar - a unix tar archive.
This archived package is stored in a temporary
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Online Computer and Operating System: Sun Ultra
running Solaris 2.6 operating system.
Offline Option
Offline Media: CD-ROM
Recording Capacity
Recording Density: 650
Recording Density Units: megabytes
Recording Format: ISO 9660
Compatibility Information: CD-ROM is available in
either MS-DOS or UNIX compatible record formats.
Fees: none
Ordering Instructions: Call (202.366.DATA), fax (202.366.3640),
or E-mail (orders@bts.gov) BTS to request the National Transportation
Atlas Databases 2000 CD-ROM. This and other BTS products may be ordered
from the BTS Internet site (www.bts.gov/).
Metadata Reference Option
Metadata Date: 19991001
Metadata Review Date: 200002
Metadata Contact:
Contact Organization Primary
Contact Organization: Bureau of Transportation Statistics
Contact Address
Address Type: mailing address
Address: 400 Seventh Street, SW
City: Washington
State or Province: DC
Postal Code: 20590
Contact Voice Telephone: 1 202 366 3282
Contact Facsimile Telephone: 1 202 366 3640
Contact Electronic Mail Address: ntad@bts.gov
Metadata Standard Name: FGDC Content Standards for Digital
Geospatial Metadata
Metadata Standard Version: 19940608