MnMAT - Crash Mapping Analysis Tool

MnMAT - Crash Mapping Analysis Tool

Case Study No. 1 Crash Severity for Lane Departures Crashes Q. What is the crash severity for lane departure crashes in the City of Faribault between 2010- Steps Needed for Case 1

1. Select Crash Data (circle with red, blue and yellow graphic), then select Crash Filters. 2. Select City under Location Filters, then check Faribault. 3. Select Crash Year under Attribute Filters, then check years 2010-2014. 4. Select Crash Diagram and select crash codes pertaining to lane departure crashes. (sideswipe passing/opposing, Ran off Road-Left/Right and head on)

5. Click OK. Lane Departure Crashes by Severity Lane Departure Crashes by Severity The previous slide illustrates that

most crashes between 2010-2014 involved property damage followed by possible injury crashes. There was a total of 297 crashes during this time frame. Case Study No. 2

Q. What are the most dominant crash diagram types resulting from chemical impairment as the 1st contributing factor in the City of Faribault? Steps Needed for Case 2 1.Select Crash Data, then select Crash

Filters. 2.Select City under Location Filters and then check Faribault. 3.Select Contributing Factor 1 under Attribute Filters and then check Chemical Impairment. 4.Click OK. 5.Select Charts, then select Diagram under Crash Diagram resulting from Chemical

Impairment in Faribault Crash Diagram resulting from Chemical Impairment in Faribault The bar chart on the previous slide illustrates that the three most occurring

crashes as a result of chemical impairment are rear end, ran off the road (right side) and ran off road (left side) There was a total of 53 crashes. Case Study No. 3 Q. What number of reported crashes involve younger (under 21) inexperienced drivers as the 1st contributing factor that ran

off the road in Faribault? Steps Needed for Case 3 1. Select Crash Data, then select Crash Filters. 2. Select City, and then check Faribault. 3. Select Driver Age, then check appropriate boxes for Drivers under 21. 4. Select Contributing Factor 1, then check Inexperience. 5. Select Crash Diagram and select crash codes

pertaining to lane departure crashes. (sideswipe passing/opposing, Ran off Road-Left/Right and head on), then click Ok. 6. Select Charts, then select Diagram under the Distracted Young Drivers Online MnCMAT Tool Inexperienced Young Drivers

The crash reports indicate that there was one head on, two ran off road right side, and one ran off road left side crashes. Case Study No. 4 Q. How many young drivers (<21) were involved

in K & A crashes that was a result of disregarding a traffic device as the 1st contributing factor within Steps Needed for Case 4 1. Select Create New Project, then select the Metro District and click OK. 2. Select Crash Data, then select Crash Filters, then select Crash Severity and select the appropriate

codes for K & A crashes. 3. Select Driver Age and select the appropriate ages for drivers under 21. 4. Select Contributing Factor 1 and select Disregard Traffic Device, and click OK. 5. Select Charts, then select Crash Severity under the dropdown menu, and then select Add Chart. Young (<21) Drivers involved in K & A crashes by Disregarding Traffic Devices in Metro District

Young (<21) Drivers involved in K & A crashes by Disregarding Traffic Devices in Metro District The graphs on the previous slide show that there were a total of 145 K & A crashes involving young drivers disregarding traffic devices

Of the 145 crashes, 115 crashes (almost 80%) were incapacitating accidents

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