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Enhancing Collision Location Accuracy with GPS: Lessons from Traffic Accident Surveillance

Learn from the experiences of Boyd T. Sigler in implementing GPS technology for accurate collision location data. Discover valuable lessons on partnership, training, data checks, and collaboration with field officers for improved highway safety.

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Enhancing Collision Location Accuracy with GPS: Lessons from Traffic Accident Surveillance

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  1. Using GPS To Locate Collisions Lessons Learned Division of Traffic Accident Surveillance Section

  2. Boyd T. Sigler • Manager, KYTC Accident Surveillance Section • 26+ Years in Traffic Records Data Usage and Highway Safety Coordination • Former Cabinet Highway Safety Coordinator, KYTC • Chair, Traffic & Safety Research Advisory Committee • Board of Directors, Kentucky CODES Project • Instructor - Kentucky Department of Criminal Justice Training - Eastern Kentucky University • Contributing writer - Kentucky Law Enforcement News

  3. Background • Kentucky Uses Route-Milepoint for Location • Milepoint Data on Collision Report Inconsistent/Inaccurate • Technology Grant Received In 1997 - KYTC Requests Exploration of GPS • Selective Availability Removed • Hand-held GPS Receivers Became More Affordable and More Accurate

  4. Background • KYTC Worked With FHWA To Secure Funding - $900,000 HES Funds • Team of Enforcement, Engineering, GIS • Purchased GPS Receivers • Train-The-Trainer Session and Receiver Distribution • Started Reporting on Collision Reports January 2002

  5. Lesson #1 Partner With All Necessary Agencies From The Beginning Enforcement - State & Local Transportation Engineering Staff GIS & Mapping Staff

  6. Distribution & Training

  7. Lesson #2 Make Sure That The Training Is Conducted By Knowledgeable Individuals Make Sure That The Correct Individuals Are On-Hand To Be Trained

  8. GPS UNITS Provided To State & Local Enforcement At No Cost To The Agencies

  9. Lesson #3 Do A Thorough Check Of Enforcement Agency Resources Even Though It Requires More Time

  10. Lesson #4 Prepare Collision Report Form For Use With GPS

  11. GPS Coordinates

  12. Lesson #5 Use Data Edit Checks For Coordinates Make Certain They Are In Place Before Data Entry Begins

  13. Statewide View Before Edits

  14. Full Extent View Before Edits 76,000 Crashes - January 1-June 30, 2002

  15. Full Extent View After Edits 41,000 Crashes - October 1 - December 31, 2002

  16. Lesson #6 Allow For Various Mapping Changes

  17. Kentucky Single ZoneState Plane Coordinate System

  18. Lesson #7 Partner With Field Officers & Their Agencies http://www.kytc.state.ky.us/drvsmrt/

  19. Lesson #8 Provide Feedback To Field Officers

  20. Lesson #9 Spotlight Agencies That Provide Quality Data http://docjt.jus.state.ky.us/

  21. Lesson #10 Develop A Method Of Evaluation

  22. CONTACT • Boyd.Sigler@mail.state.ky.us • 502-564-3020 • 501 High St., Frankfort, KY 40622

  23. QUESTIONS???

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