Using CODES Linked Data to Expand an Existing State GIS System

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Using CODES Linked Data to Expand an Existing
State GIS System

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• Mary Pease
• Traffic Records Forum
• New Orleans, LA

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GIS in Public Safety is a No Brainer

• Computer Aided Dispatch
• Crash Data Analysis
• Vehicle Tracking (GPS)
• Road Inventory and Maintenance

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SC CODES Geographical Information System

• Goal GIS System That Maps Crash Locations to a
  Point Location
• Not Nearest Intersection
• Not to a Road Segment
• Secured Funding to Translate TIGER Base Map to
  GPS Base Map
• Pilot Project In Safe Communities

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Why Address-Geocoding?

• TIGER is the only statewide basemap available
• Links to Census Statistical Data are possible
• Addressing Geocoding Project built upon TIGER
• Up-to-date Road Names and Address Ranges for most
  SC Counties

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Global Positioning System (GPS)

• Accurate Location Information
• Standardized Data Collection
• Cannot reliably link to Census Statistical Data

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GPS to TIGER Comparisonafter GIS Improvements
Topological relationships are maintained between
geographic features. Correct Census Block
Assignments are established.
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Richland County Fatalities
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What Kind of Map Do I Need?

• What Information Do You Want the Viewer to Take
  Home?
• User/Customer Needs
• Grant Application/Evaluation
• Problem Identification
• Identifying Target Population/Problems
• Roadway Improvements
• Identify Way to Improve Allocation of Scare
  Resources
• Get Money

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Map Scalability Intended Use

•         To assist in defining a problem, state
  wide maps showing frequencies by areas
•         To assist in locating a geographic area,
  maps of the target area showing crashes to the
  nearest intersection
•         To develop interventions for primary
  prevention activities, maps of the target area to
  the nearest intersection
•         To develop interventions for engineering
  and enforcement, maps showing the exact location
  of crashes 

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GIS For Grant Writing,Safe Communities Safe
Kids Programs
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The Issue/Type Of Decision

• South Carolina CODES data is an integral part of
  Department of Public Safetys Grant process
• Grantees are expected to use these data to define
  problems, geographically locate problem areas,
  develop interventions and use the data in the
  grant evaluation.
• Grants must address the Three Es,
  enforcement, education and engineering.
• An effect and efficient method of presenting
  complex data is with the use of a geographic
  representation of CODES data, i.e., maps.

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Richland County Fatalities
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Engineering Where to the crashes occur for in
the intersection Greenlawn and Garners Ferry
Road? 
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Digital Cartography Office of Research
Statistics SC Budget Control Board 803-734-3804
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Digital Cartography Office of Research
Statistics SC Budget Control Board 803-734-3804
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Digital Cartography Office of Research
Statistics SC Budget Control Board 803-734-3804
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Digital Cartography Office of Research
Statistics SC Budget Control Board 803-734-3804
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Enforcement Are the Patrol Zones for
DUI?   
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Digital Cartography Office of Research
Statistics SC Budget Control Board 803-734-3804
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Digital Cartography Office of Research
Statistics SC Budget Control Board 803-734-3804
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Digital Cartography Office of Research
Statistics SC Budget Control Board 803-734-3804
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Digital Cartography Office of Research
Statistics SC Budget Control Board 803-734-3804
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 Education What high schools could benefit
from a teen driving programs? 
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Digital Cartography Office of Research
Statistics SC Budget Control Board 803-734-3804
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Digital Cartography Office of Research
Statistics SC Budget Control Board 803-734-3804
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Digital Cartography Office of Research
Statistics SC Budget Control Board 803-734-3804
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Digital Cartography Office of Research
Statistics SC Budget Control Board 803-734-3804