[Federal Register: April 20, 2001 (Volume 66, Number 77)]
[Notices]
[Page 20322-20323]
From the Federal Register Online via GPO Access [wais.access.gpo.gov]
[DOCID:fr20ap01-82]
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DEPARTMENT OF THE INTERIOR
U.S. Geological Survey
Federal Geographic Data Committee (FGDC); Public Review of the
NSDI Framework Transportation Identification Standard
ACTION: Notice; request for comments.
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SUMMARY: The FGDC is conducting a public review of the draft NSDI
Framework Transportation Identification Standard. An interagency team
under the FGDC Ground Transportation Subcommittee developed this draft
standard over several years and the FGDC Coordination Group comprised
of representatives from Federal agencies approved releasing this
standard for
[[Page 20323]]
public review. The FGDC invites software vendors and data users and
producers in public and private sectors to comment on this standard to
ensure that the standard meets their needs.
Comments that address specific issues/changes/additions may result
in revisions to the draft NSDI Framework Transportation Identification
Standard. After comments have been evaluated, participants will receive
notification of how their comments were addressed. After formal
endorsement of the standard by the FGDC, the standard and a summary
analysis of the changes will be made available to the public.
DATES: Comments must be received on or before July 20, 2001.
ADDRESSES: The draft standard may be downloaded via Internet address
http://www.fgdc.gov/standards/status/sub5_7.html
Request for printed copies of the standard should be addressed to
``NSDI Framework Transportation Identification Standard,'' FGDC
Secretariat (attn: Julie Binder Maitra), U.S. Geological Survey, 590
National Center, 12201 Sunrise Valley Drive, Reston, Virginia 20192 or
facsimile 703-648-5755 or Internet at jmaitra@usgs.gov.
Reviewer's comments may be sent to FGDC via Internet mail to gdc-
transportation@www.fgdc.gov. Reviewer's comments may also be sent to
the FGDC Secretariat at the above address. Please send one hardcopy
version of the comments and a softcopy version on 3.5-inch diskette in
Microsoft Word or Rich Text Format. All reviewers are strongly urged to
use the template for sending comments that may be downloaded from
Internet address http://www.fgdc.gov/standards/directives/dir2d.html
SUPPLEMENTARY INFORMATION: Following is information about the draft
NSDI Framework Transportation Identification Standard, submitted by the
FGDC Ground Transportation Subcommittee:
The proposed standard specifies methods for identifying linear
geospatial features that can be implemented within existing data
structures. The standard defines a transportation segment independent
of cartographic representation, scale, network topology, and attributes
that can change over time. The standard relates multiple cartographic
and topological network database representations to uniquely identified
transportation segments in the real world, and provides the domain for
transferring application attributes across linear referencing and
cartographic systems.
The model consists of a set of one-dimensional Framework
Transportation Segments (FTSeg) that have zero-dimensional Framework
Transportation Reference Points (FTRP) at their termini. FTRP and FTSeg
are highly stable, unambiguously identified, and recoverable in the
field. The standard specifies a mandatory set of attributes for each
FTSeg and mandatory attributes for each FTRP.
The standard specifies a format for a unique identification code to
be assigned to each FTSeg and each FTRP. It also specifies a process
for assigning, modifying and recording FTRP and FTSeg identification
codes, and proposes a national registry for their identification.
Establishment of stable transportation segment identifies will
facilitate the exchange of information, e.g., improved geospatial
coordinates, feature attributes like road names, controls to various
linear referencing methods mile points, or low and high address values,
between databases.
This proposed standard has widespread applicability for public
sector and commercial database developers and data users. It will
facilitate data exchange among different users by providing well-
defined common reference segments tied to the physical transportation
feature, rather than to any cartographic or network abstraction of that
feature. It will allow users to create customized topological networks
from the reference segments without modifying the properties of the
reference segments themselves, and to make transactional updates to
framework transportation databases.
There has been no standard approach for documenting the
relationship between a digitized transportation segment and the
physical transportation feature that it represents. There has been no
national standard for identifying, segmenting, or representing
transportation segments in digital geospatial databases. Consequently,
the exchange of attribute information between two different
transportation databases representing the same geographic area is
difficult, time consuming, and error prone.
Dated: April 11, 2001.
Karen Siderelis,
Geographic Information Officer.
[FR Doc. 01-9769 Filed 4-19-01; 8:45 am]
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