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National Highway Network Nodes

Identification Information
Citation
Originator
Federal Highway Administration, Office of Intermodal and Statewide Programs (HEPS-20)
Publication Date
2001
Title
National Highway Network Nodes
Geospatial Data Presentation Form
vector digital data
Collection Title
National Transportation Atlas Databases
Publication Information
Publication Place
Washington, DC
Publisher
Bureau of Transportation Statistics
Other Citation Details
National Highway Planning Network Version 3.0 Machine Readable Data Files
Online Linkage
https://hgl.harvard.edu/catalog/harvard-ntadnhpn
Abstract
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.
Purpose
Transportation, regional planning analysis using GIS
Temporal Extent
Currentness Reference
publication date
Time Period
Beginning
1992
End
2001
Bounding Box
West
-176.768534
East
179.389562
North
71.316258
South
17.933096
ISO Topic Category
transportation
Theme Keyword
Highways
Roads
Highway planning
Transportation
Theme Keyword Thesaurus
LCSH
Place Keyword
United States
Puerto Rico
Place Keyword Thesaurus
LCSH
Temporal Keyword
Access Restrictions
None
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. For Non-commercial use only.
Status
Complete
Maintenance and Update Frequency
Annually
Point of Contact
Contact Organization
The Federal Highway Administration. Office of Intermodal and Statewide Programs, HEPS-20
Delivery Point
400 Seventh Street, SW
Delivery Point
City
Washington
State
District of Columbia
Postal Code
20590
Country
USA
Contact Telephone
(202) 366-1257
Contact Facsimile Telephone
(202) 493-2198
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.
Native Data Set Environment
Microsoft Windows NT Version 4.0 (Build 1381) Service Pack 6; ESRI ArcCatalog 8.1.1.649
Collection
Originator
Bureau of Transportation Statistics (comp.)
Publication Date
2001
Title
National Transportation Atlas Databases
Publication Information
Publication Place
Washington, DC
Publisher
Bureau of Transportation Statistics
Cross-Reference
Originator
Federal Highway Administration, Office of Intermodal and Statewide Programs (HEPS-20)
Publication Date
2001
Title
National Highway Network
Geospatial Data Presentation Form
vector digital data
Publication Information
Publication Place
Washinton, DC
Publisher
Bureau of Transportation Statistics
Other Citation Details
National Highway Planning Network Version 3.0 Machine Readable Data Files
Data Quality Information
Attribute Accuracy Report
The accuracy of the fields FCLASS and STRAHNET from the description section of the line shapefile 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 line shapefile is consistent with State supplied information for the years 1992 through 2001. 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 2000. Functional classes below arterial vary on a State by State basis.
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.
Lineage
Source
Originator
Oak Ridge National Laboratory
Publication Date
1992
Title
National Highway Planning Network v.1.1
Publication Information
Publication Place
unknown
Publisher
unknown
Source Scale Denominator
unknown
Type of Source Media
unknown
Source Temporal Extent
Time Period Information
Single Date/Time
Calendar Date
19920701
Source Currentness Reference
publication date
Contribution
Non-verified attributes for rural highways.
Source
Title
USGS Digital Line Graph (DLG-3) Series
Publication Information
Publication Place
unknown
Publisher
unknown
Type of Source Media
unknown
Source Temporal Extent
Time Period Information
Single Date/Time
Calendar Date
DLG-3
Contribution
Road alignments for rural and urban highways.
Source
Originator
State supplied digital and map data
Publication Information
Publication Place
Unknown
Publisher
Unknown
Type of Source Media
Unknown
Source Temporal Extent
Time Period Information
Single Date/Time
Calendar Date
19921231
Source Currentness Reference
publication date
Contribution
Alignments and attributes for urban highways. Sign route and function class attributes for principal arterial system.
Source
Originator
State supplied digital and map data
Publication Information
Publication Place
Unknown
Publisher
Unknown
Type of Source Media
Unknown
Source Temporal Extent
Time Period Information
Single Date/Time
Calendar Date
19931101
Source Currentness Reference
publication date
Contribution
Alignments, sign route NHS classification for National Highway System.
Source
Originator
State supplied digital and map data
Publication Information
Publication Place
Unknown
Publisher
Unknown
Type of Source Media
Unknown
Source Temporal Extent
Time Period Information
Single Date/Time
Calendar Date
19931101
Contribution
Linear Referencing System Attributes
Source
Title
CENSUS TIGER/Line 1994
Publication Information
Publication Place
Unknown
Publisher
Unknown
Source Temporal Extent
Time Period Information
Single Date/Time
Calendar Date
1994
Contribution
Alignment, shape and location of ramp features
Spatial Data Organization Information
Direct Spatial Reference Method
Vector
Point and Vector Object Information
SDTS Terms Description
SDTS Point and Vector Object Type
Entity point
Point and Vector Object Count
125797
SDTS Terms Description
SDTS Point and Vector Object Type
Network chain, nonplanar graph
Point and Vector Object Count
125797 nodes
Spatial Reference Information
Horizontal Coordinate System Definition
Geographic
Latitude Resolution
0.000001
Longitude Resolution
0.000001
Geographic Coordinate Units
Decimal degrees
Geodetic Model
Horizontal Datum Name
D_WGS_1984
Ellipsoid Name
WGS_1984
Semi-major Axis
6378137.000000
Denominator of Flattening Ratio
298.257224
Vertical Coordinate System Definition
Altitude System Definition
Altitude Resolution
1.000000
Altitude Encoding Method
Explicit elevation coordinate included with horizontal coordinates
Entity and Attribute Information
Entity Type
Entity Type Label
SDE.NTADNHPNND
Entity Type Definition
ESRI Shapefile
Entity Type Definition Source
Federal Highway Administration, Office of Intermodal and Statewide Programs, HEPS-20
Attributes
VERSION
The VERSION is a 2-digit number that will be incremented for all records in the database whenever a new release is distributed. In this release the value is 03 (00 to 99)
Definition Source
BTS
FEATURID
Unique node identification
Definition Source
Assigned
STFIPS
State FIPS Code (Federal Information Processing Standard)
Definition Source
FIPS Pub 6-4
CTFIPS
County FIPS Code (must be combined with State FIPS Code for a unique ID) (Federal Information Processing Standard)
Definition Source
FIPS Pub 6-4
LGURB
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 (00 to 999)
SMURB
The Source Flag is used to ideFive 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. (00 to 99999)
BNDRY
The BNDRY Flag is used to identify nodes which lie on the boundary of logical polygons maintained within NHPN.
0
Not a boundary node
1
County Boundary
2
Adjusted Urbanized Area
4
Adjusted Small Urban Area
10
State Border
Attribute Value Accuracy Explanation
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.
DESCRIPT
Node name or identification
SHAPE
The SHAPE attribute is a data attribute inherent to the ESRI shapefile format. (Coordinates defining the features.)
Definition Source
ESRI and BTS
SHAPE.FID
Distribution Information
Format Name
SHAPE
Distributor
Harvard Geospatial Library
Online Access
hgl.harvard.edu
Name
Metadata Reference Information
Metadata Date
20020705
Metadata Contact
Contact Information
Contact Organization Primary
Contact Organization
Harvard Geospatial Library
Contact Person
Geospatial Resources Cataloger
Contact Address
Address
Office of Information Systems
Address
1280 Massachusetts Avenue
City
Cambridge
State or Province
MA
Postal Code
02138
Country
USA
Contact Voice Telephone
617-495-2417
Contact Facsimile Telephone
617-496-0440
Contact Electronic Mail Address
hgl_ref@hulmail.harvard.edu
Metadata Standard Name
FGDC Content Standards for Digital Geospatial Metadata
Metadata Standard Version
FGDC-STD-001-1998
Metadata Extensions
Online Linkage
http://www.esri.com/metadata/esriprof80.html
Profile Name
ESRI Metadata Profile
Metadata Extensions
Online Linkage
http://www.esri.com/metadata/esriprof80.html
Profile Name
ESRI Metadata Profile
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