BTS, National Highway Planning Network 2005.08 region 1(line), USA, 2008
Abstract: The National Highway Planning Network is a comprehensive network database of the nation's major highway system
. It consists 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: The primary purpose of this geospatial data set is to serve the FHWA needs in highway planning, policy analysis, visualization of the Highway Performance Monitoring System (HPMS) database and network modeling. The NHPN is the digital source used for coding and publishing the FHWA approved National Highway System maps.
Supplemental_Information: The NHPN version 2005.08 contains 8 polyline features (RECIDs 4000057, 4000855, 41000287, 41002220, 48000952, 72001074, 72001170, and 72001488) that are each defined by more than 500 shape points. These features will not import correctly into the workstation version of ArcInfo, which has a 500 shapepoint limit. When importing into the workstation version of ArcInfo, the 8 features will be automatically split into 2 features each. As part of this process, attributes are simply duplicated on the split features. Because of this, attributes such as MILES and KM become invalid for these features.
| Attributes | Range | Median | Mean | Standard Deviation |
|---|---|---|---|---|
| NHPN arc mile point sequence number. | 0.00 - 53.00 | 3.00 | 6.52 | 8.37 |
NHPN arc mile point sequence number. | ||||
| LRS Key | text column (no statistics available) | |||
Uniquely identifies a route within a state. | ||||
| FHWA designated Intermodal Facility unique ID. | text column (no statistics available) | |||
FHWA designated Intermodal Facility unique ID. | ||||
| functional class of each arc. | 0.00 - 19.00 | 11.00 | 9.09 | 5.59 |
Identifies the assigned functional class of each arc. | ||||
| additional secondary Sign Route for the arc 3 | text column (no statistics available) | |||
Contains designated additional secondary Sign Route for the arc | ||||
| Sign Route Qualifier Record | text column (no statistics available) | |||
Sign Route Qualifier Record which is used to qualify the sign route description follows the Sign Route Number. | ||||
| 5 digit CENSUS Small Urban Area code | 0.00 - 97291.00 | 9271.00 | 29138.76 | 32224.50 |
5 digit CENSUS Small Urban Area code for cities under 50,000 population in 2000. A value of 0 indicates the arc is outside any Small Urban Area. | ||||
| Record ID | 9000001.00 - 50000716.00 | 25001252.00 | 25349604.21 | 11814922.98 |
A unique numeric ID associated with each arc of NHPN version 2004.06. | ||||
| Ending mile point of the NHPN arc segment. | 0.00 - 527.36 | 9.41 | 27.84 | 46.03 |
Ending mile point of the NHPN arc segment. | ||||
| measurement in miles for the arc chain. | 0.00 - 49.76 | 0.45 | 1.68 | 3.23 |
Contains measurement in miles for the arc chain. | ||||
| local street name for the arc. | text column (no statistics available) | |||
Contains the local street name for the arc. | ||||
| Sign Route Qualifier Record 2 | text column (no statistics available) | |||
Sign Route Qualifier Record which is used to qualify the sign route description follows the Sign Route Number. | ||||
| Description of Intermodal Facility Connectors | text column (no statistics available) | |||
Description of Intermodal Facility Connectors | ||||
| measurement in kilometers for the arc chain. | 0.00 - 80.07 | 0.72 | 2.70 | 5.19 |
Contains measurement in kilometers for the arc chain. | ||||
| Sign Route Qualifier Record 3 | text column (no statistics available) | |||
Sign Route Qualifier Record which is used to qualify the sign route description follows the Sign Route Number. | ||||
| National Highway System | 0.00 - 8.00 | 1.00 | 2.43 | 3.18 |
Special subnetwork for the National Highway System. The following values were converted per direction from the FHWA: 2 (ISTEA High Priority Corridor) was converted to 7 (Other NHS) , 5 (ISTEA High Priority Corridor/ Non-Interstate STRAHNET) was converted to 3 (Non-Interstate STRAHNET), 6 (ISTEA High Priority Corridor/STRAHNET Connector) was converted to 4 (STRAHNET Connector). | ||||
| Record Type | text column (no statistics available) | |||
Identifies arc file records. | ||||
| Total Mileage of the designated Connector. | 0.00 - 4.60 | 0.00 | 0.04 | 0.29 |
Total Mileage of the designated Connector. | ||||
| sign route numbers | text column (no statistics available) | |||
Contains the actual sign route numbers . Using HPMS standards, an optional directional indicator (N, S, E, W) can also be used as part of this field. | ||||
| Version of the database | text column (no statistics available) | |||
Version of the database | ||||
| Number of through lanes | 0.00 - 10.00 | 0.00 | 1.83 | 2.32 |
The Number of through lanes field indicates the number of striped lanes in both directions. This field does not include auxiliary lanes, such as collector-distributor lanes, weaving lanes, frontage road lanes, parking and turning lanes, acceleration/deceleration lanes, toll collection lanes and truck climbing lanes. | ||||
| actual sign route numbers 2 | text column (no statistics available) | |||
Contains the actual sign route numbers . Using HPMS standards, an optional directional indicator (N, S, E, W) can also be used as part of this field. | ||||
| 3 digit FIPS code for the county the arc resides. | 1.00 - 119.00 | 11.00 | 12.92 | 9.31 |
3 digit FIPS code for the county the arc resides. | ||||
| actual sign route numbers 3 | text column (no statistics available) | |||
Contains the actual sign route numbers . Using HPMS standards, an optional directional indicator (N, S, E, W) can also be used as part of this field. | ||||
| ending position of the arc chain. | 9000001.00 - 50000598.00 | 25000898.00 | 25240542.07 | 11762093.91 |
Identifies a node in the nhpnnod shapefile that corresponds to the ending position of the arc chain. | ||||
| unique numeric ID | 230.00 - 5000000845.00 | 2500001508.00 | 2518718154.41 | 1198852210.12 |
A unique numeric ID associated with each arc of previous versions of NHPN as appropriate. | ||||
| Version | text column (no statistics available) | |||
Used for maintaining consistency across data files containing alternate releases of the NHPN. The Version Code consists of a leading Version Number (the year of release) and a trailing number (the month of release), thus, 2004.06 describes Major Release for the year 2004 and month 06. | ||||
| State FIPS Code | text column (no statistics available) | |||
State FIPS Code | ||||
| Beginning mile point for the NHPN arc segment. | 0.00 - 527.27 | 7.42 | 26.55 | 45.42 |
Beginning mile point for the NHPN arc segment. | ||||
| FHWA designated Intermodal Facility Connector unique ID | text column (no statistics available) | |||
FHWA designated Intermodal Facility Connector unique ID | ||||
| Describes availability of the arc to through traffic. | 0.00 - 2.00 | 1.00 | 1.00 | 0.05 |
Describes availability of the arc to through traffic. | ||||
| starting position of the arc chain. | 9000001.00 - 50000598.00 | 25000910.00 | 25264045.21 | 11791175.46 |
Identifies a node in the nhpnnod shapefile that corresponds to the starting position of the arc chain. | ||||
| road owner | 0.00 - 5.00 | 0.00 | 0.76 | 1.23 |
Identifies the road owner | ||||
| Describes the type of the sign route. | text column (no statistics available) | |||
Describes the type of the sign route. | ||||
| The Annual Average Daily Traffic | 0.00 - 256000.00 | 0.00 | 20559.35 | 36966.85 |
The Annual Average Daily Traffic field comes from the 2002 Highway Performance Monitoring System. | ||||
| Special subnetwork for the Strategic Highway Corridor Network. | 0.00 - 6.00 | 0.00 | 0.96 | 1.91 |
Special subnetwork for the Strategic Highway Corridor Network. | ||||
| Rural/Urban classification of the arc. | 1.00 - 3.00 | 3.00 | 2.54 | 0.80 |
Describes the Rural/Urban classification of the arc. | ||||
| type of the sign route | text column (no statistics available) | |||
Describes the type of the sign route. | ||||
| designated primary Sign Route for the arc. | text column (no statistics available) | |||
Contains the designated primary Sign Route for the arc. | ||||
| Source of arc | text column (no statistics available) | |||
Source of arc | ||||
| type of the sign route. 3 | text column (no statistics available) | |||
Describes the type of the sign route. | ||||
| designated secondary Sign Route for the arc 2 | text column (no statistics available) | |||
Contains the designated secondary Sign Route for the arc. | ||||
| 3 digit HPMS Urbanized Area code | 0.00 - 437.00 | 7.00 | 67.59 | 113.95 |
3 digit HPMS Urbanized Area code for the Urbanized Area in which the arc lies. A value of 0 indicates the arc is outside any HPMS Urbanized Areas. | ||||
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