Download - Feasibility Study of Integrating WVDOT LRS Centerline With Statewide Addressing And Mapping Data
Feasibility Study of Integrating WVDOT LRS Centerline With Statewide Addressing And
Mapping Data
Sang YooNick J. Rahall Appalachian Transportation Institute, Marshall University
Kevin KuhnWest Virginia GIS Technical Center, West Virginia University
Introduction• Review technical issues regarding the feasibility
of road network integration which incorporates linear referencing, addressing, and routing
• Objectives– Review and assess current DOT data– Review Statewide Addressing and Mapping Board
Addressing and Centerline data– Identify and review existing transportation models– Identify DOT data needs– Identify requirements for data integration
Linear Referencing System
• Single Enterprise LRS• Mainframe is used to manage LRS control files
- Road Inventory Log (RIL)• Principal LRM - Route/MilePoint
Linear Referencing System
• Extent of Roadways – Interstate, US Routes, State Routes, County
routes
• Ramps not included• Divided Highways – Single record• Historical data – single snapshot at the end of
year
RIL Data Process
From WVDOT Strategic GIS Implementation Plan
RIL Improvement Project
• RDBMS (MSSQL)• Replace old mainframe system• Ramp, intersection, divided highway, etc• LRS update/change tracking
GIS Implementation• GIS software - ESRI• GIS based map (90%) - Interstate, US, State,
County routes, Federal Aid Non-State, State Park and Forest Roads, others
• Source - Roadware GPS points & lines, SAMB centerlines
• Scale – 1: 4800• RIL, SLD, Aerial Imagery
GIS Implementation
• Not segmented (no calibration yet)• Interstate and US route have dual geometries• M value• Linear Referencing currently being used in the
GIS– Data display/mapping– Database query– Determination of linear measures (only as
reference)
Data Model
• NCHRP 20-27• GIS-T Enterprise • NSDI Framework Transportation• UNETRAN• Revised/Improved UNETRAN
Revised UNETRAN
From J. Allison Butler, “Designing Geodatabase for Transportation”, ESRI 2008
Highway Inventory Conceptual Data Model
From J. Allison Butler, “Designing Geodatabase for Transportation”, ESRI 2008
Conceptual Model for Intersections
From J. Allison Butler, “Designing Geodatabase for Transportation”, ESRI 2008
Transport Network Classes
From J. Allison Butler, “Designing Geodatabase for Transportation”, ESRI 2008
Table From J. Allison Butler, “Designing Geodatabase for Transportation”, ESRI 2008
From J. Allison Butler, “Designing Geodatabase for Transportation”, ESRI 2008
Revised UNETRAN
• Restructure the class packages to four (Inventory, Network, Events, Mobile Objects)
• ESRI Network Dataset• Edit & Publish Geodatabase• Event for Everyone
SAMB Data
• Statewide Mapping Project– Photogrammetrically Collected 2003– Scale 1:4,800– Seamless statewide*, All roads/trails/driveways– Physical Intersection segmentation– Topologically enforced– Limited attributes
SAMB Data Source
• West Virginia Department of Homeland Security and Military Affairs
• Maintained in Oracle Database– Serves as County E911 and Addressing Data– Voluntary Cooperation
• Continuously Updated at County Level– Via Online Custom Oracle web interface (or)– Submitted in bulk
Integrated Road Network Pilot• Develop sample road network: Results in an
enhanced LRS data model that incorporates additional data and functionality.
– Shares Geometry (WVDOH & SAM)– Linear Referencing– Addressing– Routing capabilities
Integrated Road Network Pilot - Approach
• Integration Process– Identify Technical Issues
• From SAM to DOH• From DOH to SAM
– Identify non-technical Issues• High Level Cooperation of SAM and WV DOH• Permit Long-term Data Sharing and Development
• Answer Question: “Which asphalt supplier is closer to the jobsite?”
Road Network Pilot- Why Kanawha County?• Variety of Features
– Interstates– US Routes– County Routes– Charleston (Local) roads
• Addressed SAM Data• Well Known
WVDOH Interstate Routes
WVDOH US Routes
WVDOH All Routes
WVDOH All Routes and SAM Roads
Integrated Road Network Pilot
• Data Structure Analysis– SAM 911 Centerline
• Attributed with Route ID
– Segmentation• Physical Intersections• Not political boundary
– No segment at City/County ownership
Integrated Road Network Pilot
• Routing Capabilities– Destination / Origin– Addressing Data Source– Service Area
• District Maintenance Facilities• Road Materials Supply Facilities• Snow Maintenance
Integrated Road Network Pilot
• Linear Referencing– Simple select-assign Route ID– Rebuild single segment routes– Create a repeatable process
• Route Calibration Points
• Conflation Issues (the good)– SAM Data enforced topology– Comprehensive Street Coverage– Street Name ID / Name– Address Range by segment
Integrated Road Network Pilot
• Conflation Issues (the bad)– Temporal Currency Inconsistent by
County/Feature– Assign all DOH Street Segments Route ID
• Alt - Create Crosslink table (Street ID – Route ID)
– Segment Political Boundaries• Addressing Range Data
Integrated Road Network Pilot
• Conflation Issues (the ugly)– County Edge match
• Need for accurate county boundary• Re-address at county split segments
– Segment Political Boundaries• Split at • Addressing Range Data
Integrated Road Network Pilot
WVDOH Routes, Putnam SAM, Kanawha SAM
• Lessons Learned– SAM Data is feasible to use for WVDOH
• (With Work!)• County Edge match
– Street ID (SAM) to Roadway ID (LRMP)• Provides DOH Table access to SAM geometry
– Segment Political Boundaries• Addressing Range Data
Integrated Road Network Pilot
Integrated Road Network Preliminary Conclusions
• SAM data Feasible to Use– Data Structure
• Geometry: Needs Edits, edge matching, segmentation• Attributes: Utilizes SAM Street ID
– Routing (Pathfinding) Capabilities• Address Geocoding• Routing
– Major edits needed for routing
Integrated Road Network Preliminary Conclusions
• Documentation is Critical• Business Rules and Procedures• Long-term Strategic Plan
• Needs Analysis• GIS Integration Plan at Department Level• Based on User Requirements and Additional GIS
Capabilities
• High Level Stakeholders Dialogue– WV DOH, WV DMAPS, WV GIS, Counties
• Cost-Benefit of Single Statewide Road Data• Costs Savings ?• Applications• Access and Use
• Pilot Study of District-wide Integration– Feedback to SAM system?– Cross County
Next Steps
Thank You! Questions or Suggestions?