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Using GPS To Locate Collisions
Lessons Learned
Division of Traffic
Accident Surveillance Section
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
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
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
Lesson #1
Partner With All Necessary Agencies From The Beginning
Enforcement - State & Local
Transportation Engineering Staff
GIS & Mapping Staff
Distribution & Training
Lesson #2
Make Sure That The Training Is Conducted By Knowledgeable
Individuals
Make Sure That The Correct Individuals Are On-Hand To
Be Trained
GPS UNITS
Provided To State & Local Enforcement At No Cost To The
Agencies
Lesson #3
Do A Thorough Check Of Enforcement Agency
Resources Even Though It Requires More Time
Lesson #4
Prepare Collision Report Form For Use
With GPS
GPS Coordinates
Lesson #5
Use Data Edit Checks For Coordinates
Make Certain They Are In Place Before Data
Entry Begins
Statewide View Before Edits
Full Extent View Before Edits
76,000 Crashes - January 1-June 30, 2002
Full Extent View After Edits
41,000 Crashes - October 1 - December 31, 2002
Lesson #6
Allow For Various Mapping Changes
Kentucky Single ZoneState Plane Coordinate System
Lesson #7
Partner With Field Officers & Their
Agencies
http://www.kytc.state.ky.us/drvsmrt/
Lesson #8Provide Feedback To Field Officers
Lesson #9
Spotlight
Agencies That Provide Quality Data
http://docjt.jus.state.ky.us/
Lesson #10
Develop A Method Of Evaluation
QUESTIONS???