Jessica D. Perkins GIS Programmer Analyst 2 Geospatial Transportation Information Section Program...
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![Page 1: Jessica D. Perkins GIS Programmer Analyst 2 Geospatial Transportation Information Section Program Planning & Administration Division of Highways West Virginia.](https://reader033.fdocuments.us/reader033/viewer/2022052706/5a4d1acd7f8b9ab059970047/html5/thumbnails/1.jpg)
Jessica D. PerkinsGIS Programmer Analyst 2
Geospatial Transportation Information SectionProgram Planning & Administration
Division of HighwaysWest Virginia Department of Transportation
May 9, 2012
West Virginia Department of Transportation
WV Transportation Roadway Network:Integrating Routing Capabilities and Best Practices through
Detailed Editing and an Updated Data Model
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Outline Background Data Sources Methods Future Project Ideas Questions &
Discussion
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- Roadway Inventory Log
-Roadway Statistics
-Public Certified Mileage
- Geospatial Data Management
-Geospatial Services
Geospatial Transportation Information (GTI) Section
Program Planning & Administration Division
Highway Data Services UnitGIS Unit
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GTI Background and Why?Mission Statement
To improve customer service to the citizens of West Virginia by supplying the latest transportation information.
Vision StatementCommitted to managing an enterprise Geospatial Information System that will improve the productivity of the WVDOT, meet growing customer needs, and play a leading role in West Virginia’s geospatial community. Data Availabilityhttp://www.transportation.wv.gov/highways/ programplanning/gti/
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Data SourcesWVDOT
•Routes (linear referencing system, LRS)•Non-State Public Routes (NSPR)•Ramps•Roadway Inventory Log (RIL)
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Data SourcesWV State Addressing and Mapping Centerline Dataset – Division of Homeland Security and Emergency Management
•New county-level geometry and attribute edits•Local roads•Segmentation - split geometry at intersections
(nodes)•Addressing
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MethodsAutomated Processes• Extraction, transformation, and loading (ETL) in
Data Interpretability Extension
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MethodsGeoprocessing steps for entire state dataset• Midpoints of both line feature classes (WVDOT_Midpoints
and SAM_Midpoints)• Spatial join – WVDOT_Midpoints to SAM_Midpoints• Join features from SAM_Lines to SAM_WVDOT_MidPoints
by SAM_ID• Field calculations to simplify attributes (all attributes for
WVDOT and SAM)• Identify features that were not intersected by SAM data
(“Missing_WVDOTsource”). Introduces duplicate geometry - removed during manual cleanup• Extend and Trim to connect intersections• Delete features less than 1 meter and run Extend again
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MethodsManual Processes by County
Phase 1•Use “Missing_WVDOTsource” to identify and
clean-up errors• Symbology used to visualize additional errors
and duplicates•Attribute edits using attribute transfer tool• Remove duplicate geometry
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MethodsManual Processes by County - Phase 1
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MethodsManual Processes by County
Phase 2•Geometry edits• Scan and overview clean-up•Geoprocessing model to check attribute transfer• Topology fixes in Data Reviewer•Geometry edits to ramps• Final overview clean-up
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MethodsManual Processes by County - Phase 2
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MethodsManual Processes by County - Phase 2 Complete
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MethodsManual Processes by County
Phase 3• Stitching counties back together•Deploy into updated data model
ESRI Roads and Highways Solution integrated with Roadway Inventory Log for measures
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Methods
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Methods
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MethodsMaintenance steps to update and strengthen process•Maintaining SAM Street_ID through editing process• Periodic updates from Counties through Division of
Homeland Security and Emergency Management linked back by Street_ID• Explore automated updates in future
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Future Project Ideas Improved Federal Highway Performance
Monitoring System reporting Enhanced connections to local routes on
printed and web-based maps Updated routing for analysis – desktop and
web mapping•Maintenance materials acquisition•Coal Resource Transportation System (CRTS)
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TRANSPORTATIONGIS DATA
• Commissioner Orders• Paper Maps• Field Data• Consultant Reports• Etc.
GTI_PUB_WM
GTI_PUB_UTM
UploadREFERENCE
GIS DATA • WV GIS Tech Center• WVGES• USGS• Esri• Etc.
IMAGERY• Aerial Photos• Shade Relief• Hillshade• Topo• Etc.
Editing
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Shapefiles
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Geospatial Analysis
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Editing
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Headquarters
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Districts 1- 10
GTI_PUB_UTMFGDB
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Imagery
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Questions and Discussion