AHTD’s Crash Location Tool and Utilizing Incident … · AHTD’s Crash Location Tool and...
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AHTD’s Crash Location Tool and Utilizing Incident Analyst for Crash Event Analysis Arkansas’ State Highway Crashes 2010
Transcript of AHTD’s Crash Location Tool and Utilizing Incident … · AHTD’s Crash Location Tool and...
AHTD’s Crash Location Tool and Utilizing Incident Analyst for Crash Event Analysis
Arkansas’State Highway Crashes
2010
Presentation Topics
• Overview of AHTD’s LRS
• How we collected Crash Locations
• The Problem
• The Solution – AHTD’s NEW Crash Location Tool
• Utilizing Incident Analyst for Crash Analysis and other types of analysis
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16,416 Miles of State Highway System15,472 Miles of the other routes eligible
for Federal Aid
AHTD’s Linear Referencing System
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154 Changes made from January 2011 to December 2011 on the State Highway System
Re-logged Routes
Changing AHTD’s Linear Referencing System
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Mapping Events on AHTD’s LRS
CountyRouteSectionLog Mile
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WHY COUNTY, ROUTE, SECTION and LOG MILE?
Think of it as the AHTD’s Addressing System
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Each event/structure has it’s own “address” or log mile on the Linear Referencing System
Cleburne County: Hwy. 25 Section 3
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State Police and County/City law enforcement record the crash events in a standard crash report format.
AHTD Crash Locators get the electronic copy of the crash report andcheck/determine the crash location by county, route, section & log mileAnd send back any corrections needed.
Each crash event is entered into a database housed with the State Police.
Collecting Crash Data
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Crash Location
Hwy. 82 Section 03BEnd Log Mile 1.65
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Crash Location
Hwy. 82 Section 03BEnd Log Mile 1.65
?
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Crash Location
Hwy. 79 Section 010End Log Mile 18.26
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Crash Database
52 Different Fields of Information per Crash
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Crash Database
County, Route, Section and Log Mile are used to map each crash.
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Law Enforcement – Determining Log Mile
Begin Log Mile
End Log MileBridge Log Miles
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Begin Log Mile
End Log Mile
Law Enforcement – Determining Log Mile
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Making it Easier!The LRS Location Tool Methodology
Point placed every100 feet on LRS
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Making it Easier!The LRS Location Tool Methodology
Using Spatial Intersection,Populate Log Mile Points with Road Inventory Data
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Making it Easier!The LRS Location Tool Methodology
Export out both layers to shapefiles.
Export files to a KML (for Google Earth) using Shp2kml converter.
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Making it Easier!The LRS Location Tool
= State Highway System
= Other Routes Eligible forFederal Aid
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Making it Easier!The LRS Location Tool
Making it Easier!The LRS Location Tool
City Limits Included for Each County KMZ File
Highway Base map Included for Zoom In Reference
Centerline/Interchanges/Ramps/Frontage RoadsAll Locatable
Google Street View
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Making it Easier!The LRS Location Tool
Grant_County.kmz
Let’s Take a Look!
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What now?
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Highway Safety Studies
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46.5 %
53.5 %
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INCIDENT COUNT
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REPEAT INCIDENTS
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HOTSPOT MAPPING
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HOTSPOT MAPPING
Attribute IntensitySnow Crashes
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HOTSPOT MAPPING
Attribute Intensity
Alcohol Crashes
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CHANGE OVER TIME
JANUARY
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CHANGE OVER TIME
FEBRUARY
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CHANGE OVER TIME
MARCH
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CHANGE OVER TIME
APRIL
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CHANGE OVER TIME
MAY
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CHANGE OVER TIME
JUNE
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TEMPORAL REPORTING
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Administration
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Public Involvement
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Not Just for Crash Data
SKID Data
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Not Just for Crash Data
Pavement DataIRI
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Not Just for Crash Data
Pavement DataRutting
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QUESTIONS?
