Keywords
Theme:
Rail Lines, Network, Transportation
Place:
USA, United States
Stratum:
ground
Temporal:
2008, 2009
Description
Abstract
The Rail Network is a comprehensive database of the nation's railway system at the 1:100,000 scale. The data set covers all 50 States plus the District of Columbia.
Purpose
The data set provides location and partial attribute information for use in national and regional network analysis applications.
Supplementary Information
At the time of publishing the CD significant upda0.tes to the layer were underway. Please check <http://gis.fra.dot.gov> for the latest version of the dataset
_________________
Status of the data
Complete
Data update frequency:
As needed
Time period for which the data is relevant
Date and time:
2009
Description:
publication date
Publication Information
Who created the data: Federal Railroad Administration (FRA)
Date and time:
012008
Publisher and place:
Federal Railroad Administration (FRA), Washington, DC
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Data storage and access information
File name: amtrak
Type of data: vector digital data
Location of the data:
\\meridian\gis\GIS\Data\NTAD\2009\ntad2009dvd\polyline\railway\Amtrak\amtrak.shp
Data processing environment: Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.2.6.1500
Accessing the data
Data format: ESRI Shapefile
Size of the data: 3.300 MB
Data transfer size: 40.680 MB
How to decompress the file: No compression applied. However, if using digital transfer online option, note access instructions.
Access instructions: The NTAD DVD can be ordered from the online bookstore at www.bts.gov. NTAD can also be downloaded from the Geographic Information Program web sit at http://www.bts.gov/programs/geographic_information_services/.
Available media: DVD
Constraints on accessing and using the data
Access constraints:
None
Use constraints:
Acknowledgment of the Federal Railroad Administration (FRA)
Details about this document
Contents last updated: 20090403
at time 12431400
Who completed this document
Raquel Wright
Federal Railroad Administration (FRA)
mailing and physical address:
1200 New Jersey Avenue, SE
Washington, DC 20590
USA
202.493.6415 (voice)
Standards used to create this document
Standard name: FGDC Content Standards for Digital Geospatial Metadata
Standard version: FGDC-STD-001-1998
Time convention used in this document: local time
Metadata profiles defining additonal information
ESRI Metadata Profile: http://www.esri.com/metadata/esriprof80.html
Horizontal coordinate system
Geographic coordinate system name: GCS_WGS_1984
Details
Geographic Coordinate System
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
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Bounding coordinates
Horizontal
In decimal degrees
West:
-123.201588
East:
-70.279294
North:
48.999834
South:
25.806176
In projected or local coordinates
Left: -123.201588
Right: -70.279294
Top: 48.999834
Bottom: 25.806176
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Lineage
FGDC lineage
Process step 1
Process description: Verify and validate the rail network.
Source used: ORG
Source used: DOTs
Source used: RCs
Process date: 2007
Process step 2
Process description: Dataset copied.
Process step 3
Process description: Dataset copied.
Sources
Source 1:
The Official Railway Guide
(ORG)
Media: paper
Contribution: The Official Railway Guide
Currentness of this source
Source 2:
Rail Maps
(DOTs)
Media: paper
Contribution: State DOTs
Currentness of this source
Source 3:
Rail Maps
(RCs)
Media: paper
Contribution: Rail Companies
Currentness of this source
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Spatial data quality
Horizontal positional accuracy
The horizontal accuracy for these data can be stated as being that associated with data compiled at the 1:100,000 scale.
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Spatial data description
Vector data information
ESRI description
amtrak
ESRI feature type: Simple
Geometry type: Polyline
Topology: FALSE
Feature count: 13202
Spatial Index: TRUE
Linear referencing: FALSE
SDTS description
Feature class: SDTS feature type, feature count
amtrak:
String, 13202