1. Minnesota Crash Mapping Analysis Tool and Crash Data

2. What is MnCMAT?
The Minnesota Crash Mapping Analysis Tool (MnCMAT) is an online application to help traffic safety professionals easily retrieve and analyze crash data. Each crash is plotted on a map which allows the user to visually view the location of the crash.

3. MnCMAT distribution Being Supplied by MnDOT State Aid
No additional software required
No Cost to City or County Agencies or Other Entities Approved by a City or County

4. MnCMAT webpage MnCMAT webpage

5. These approval forms can be found on the MnCMAT webpage
All users must have approval from a County or City Engineer to use the application
Approval form for government employees as well as for consultants is available
Approval forms for use

6. Steps to gain access to MnCMAT
County or city engineer submits approval form to
User submits request for an account by completing the following:
Go to MnCMAT webpage
Click on “MnCMAT Program”
Click on “Request Access”
Enter information to request access and click “Ok” to submit
Account will be activated once above steps are complete
MnCMAT webpage -

7. Brief history of MnCMAT
Developed in Iowa
late 1990’s – early 2000’s
Iowa DOT & ISU
Original named Crash Mapping Analysis Tool (CMAT)
Introduced to Minnesota in 2006
Via County Engineers
Funded by
Local Road Research Board (LRRB) Project
Research Implementation Committee (RIC)
State Aid for Local Transportation (SALT)
The first version of MnCMAT that came out in 2006 was a desktop based application. Users would install the application onto their computer from a CD that was provided to them. In 2010, MnCMAT was upgraded to a web based application. Installation of software was no longer needed and updates to crash data would be available on a more frequent basis.

8. Crash Analysis Tool Classification
Macroscopic Tool
Large Area Coverage
Trends and Statistics
Microscopic Tool
Drill Down Capabilities
Filters
Selection Capabilities
Base Mapping Tool
Visual Tool
Charts
Maps
Reports
Data Files
Crash data on all roadways in the state open to the public is available within MnCMAT. Users have the ability to pull crash data statewide or drill down further to a specific intersection or segment of roadway. Outputs that can be generated to help analyze the crash data include charts, maps, reports, and data file exports.

9. Basics of MnCMAT program
Crash Occurs
Crash report filled out by law enforcement officer responding to crash
GIS Based Mapping System
Crash report submitted electronically to Department of Public Safety (DPS)
MnDOT receives copy of statewide crash data information

10. Basic MnCMAT Crash Analysis Process
Step 1
Select Area to be Analyzed
Step 2
Apply Filtering Criteria
Step 3
Generate Output
Maps
Charts
Reports
Data Exports
These three basic steps should be followed in order to generate results from MnCMAT.

11. Step 1 – select area to be analyzed
Covers Entire State
Primary Selection by County, District, Tribal Government, or State
Multiple Secondary Selection Methods
Rectangle
Polygon
Circle
Roadway Segments

12. Statewide selection

13. Single county selection

14. Multiple county selection

15. County selection

16. There are five different toolbars to choose from which include Map Tools, Crash Data, Stacks, Charts, and Reports.
Map Tools – basic navigation tools such as zoom in/out, pan, measure, find location, bookmarks, and save/ /print map image
Crash Data – spatial filters, attribute filters, show crash data in tabular format, export crash data as CSV or shapefile
Stacks – tool which shows multiple crash locations over a wide area
Charts – generate pie, bar, column, or line charts of crash data information
Reports – generate various reports of summarized crash data information
MnCMAT toolbars

17. Selection by rectangle
In Crash Data toolbar
Selection by rectangle

18. In Crash Data toolbar
Selection by polygon

19. In Crash Data toolbar
Selection by circle

20. Selection by road segment
In Crash Data toolbar
Selection by road segment

21. Select location with “Find Location” selection
County
City
Intersection
Crash number
XY coordinate

22. Step 2 – Applying filtering criteria
In Crash Data toolbar
Step 2 – Applying filtering criteria

23. Available filter categories
City
Contributing Factor 1
Contributing Factor 2
County
Crash Diagram
Crash Severity
Day of Month
Day of Week
Driver Age
Driver Condition
Driver Gender
First Harmful Event
Investigating Officer
Light Condition
MnDOT District
Month
Number of Fatalities
Number of Vehicles
Relation to Intersection
Reliability of Information
Road Design
Roadway Character
Speed Limit
Surface Conditions
System Class
Time of Day
Traffic Control Device
Travel Direction
Tribal Govt.
Type of Crash
Type of Work Zone
Vehicle Action
Vehicle Travel Direction
Vehicle Type
Weather Conditions
Year
The available filter categories in MnCMAT is a condensed version of what is recorded on crash reports completed by law enforcement.

24. Filters within MnCMAT
Select the data applicable to the situation of interest.
Single or multiple filters may be applied.
Each filter provides “AND” logic between filter categories and “OR” logic within each filter

25. Filters within MnCMAT OR AND
If selecting within a specific filter category, use OR logic. In the example shown, the user would like to see crashes that are fatal OR incapacitating injury. If selecting from multiple filter categories, use AND logic. In the example, the user would like to see fatal OR incapacitating injury crashes AND in the year Users may select as many filters as they wish. A filter is applied only when a box is checked. If there is no box that is checked by the user, no filters are selected.
Filters within MnCMAT

26. Active filter selection statistics
Project Info box in upper right hand corner shows the Name of project (user defined project name), if any spatial or attribute filters have been applied, and the number of crashes that are selected based on filters applied.
Active filter selection statistics

27. Step 3 – Generate output
Graphical Output - View of Crash Incidents in Larger Area

28. Graphic output – wide area crash locations with stacks
Stacks allow the user to see multiple crash locations over a wide area. The longer the stack, the more crashes that have happened at that specific location. Hovering over each stack with your mouse will show more information about the number of crashes and crash severities. The different colors in the stack represent the crash severities for each crash: green (property damage only), yellow (severity C), orange (severity B), maroon (severity A), red (fatal).
Graphic output – wide area crash locations with stacks

29. Graphical output – aerial photography
Turn aerials on/off by clicking button in upper left hand corner of screen.
Graphical output – aerial photography

30. Data exports – CSV or Shapefile
Export crash data from Crash Data toolbar. A CSV (comma-separated value) will export crash data into a Microsoft Excel file. A Shapefile export can be used to pull crash data information into another GIS map.
Data exports – CSV or Shapefile

31. Data exports – CSV or Shapefile (continued)

32. Charts – Crash Severity
Users have ability to choose from pie chart, bar chart, column chart, or line chart.
Charts – Crash Severity

33. Charts – Day of the Week

34. Summary Report

35. Generated under Reports toolbar.
Detail Report

36. Crash Type Summary Report
Generated under Reports toolbar.
Crash Type Summary Report

37. Drive and Time Summary Report
Generated under Reports toolbar.
Drive and Time Summary Report

38. Top 100 Intersections Report
Generated under Reports toolbar. Top 100 intersections are listed starting with intersection that has highest number of total crashes.
Top 100 Intersections Report

39. Top 100 Intersections Report (continued)
Generated under Reports toolbar. Top 100 segments are listed starting with segment that has highest number of total crashes. A segment is defined as a roadway from one intersection to the next intersection.
Top 100 Intersections Report (continued)

40. Additional resources Users manual
Case studies: step-by-step instructions on example crash data questions
Data key filters spreadsheet: list of all available filters along with text description and database values
MnCMAT material presentation: PowerPoint presentation used for three hour face-to-face MnCMAT training given by State Aid
All resources listed above available on the MnCMAT webpage
MnCMAT webpage -

41. Disclaimer Knowledge is power…with great power, comes great responsibility
The State, County and Municipal Transportation Authorities of Minnesota make no representation or warranties, express or implied, with respect to the reuse of the data provided herewith, regardless of its format or means of its transmission. There is no guarantee or representation to the user as to the accuracy, currentness, suitability, or reliability of this data for any purpose. The user accepts the data “as is”, and assumes all risks associated with its use. The State, County and Municipal Transportation Authorities of Minnesota assume no responsibility, actual or consequential damage, as a result of any user’s reliance of this data.
By submitting this form (approval form), you are stating that you understand that this application is only a tool and that Engineering Judgment must be used when interpreting all data. You are also agreeing that you understand that the data set used by this program is subject to errors and changes, therefore not to be assumed as absolute. The Minnesota Department of Transportation, State Aid Division maintains all rights to this application and may revoke your privileges of use at any time.

42. Questions? Mark Vizecky Sulmaan Khan mark.vizecky@state.mn.us
Sulmaan Khan