Minnesota Crash Mapping Analysis Tool and Crash Data

Minnesota Crash Mapping Analysis Tool and Crash Data 1

What is Mn. CMAT? The Minnesota Crash Mapping Analysis Tool (Mn. CMAT) 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. 2

Mn. CMAT distribution • Being Supplied by Mn. DOT State Aid • No additional software required • No Cost to City or County Agencies or Other Entities Approved by a City or County 3

Mn. CMAT webpage 4

Approval forms for use

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

Brief history of Mn. CMAT • Developed in Iowa • late 1990’s – early 2000’s • Iowa DOT & CTRE @ 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) 7

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 8

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

Basic Mn. CMAT Crash Analysis Process • Step 1 • Select Area to be Analyzed • Step 2 • Apply Filtering Criteria • Step 3 • Generate Output • Maps • Charts • Reports • Data Exports 10

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 11

Statewide selection

Single county selection

Multiple county selection

County selection

Mn. CMAT toolbars

Selection by rectangle

Selection by polygon

Selection by circle

Selection by road segment

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

Step 2 – Applying filtering criteria

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 Mn. DOT 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 23

Filters within Mn. CMAT • 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 24

OR AND Filters within Mn. CMAT

Active filter selection statistics

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

Graphic output – wide area crash locations with stacks

Graphical output – aerial photography

Data exports – CSV or Shapefile

Data exports – CSV or Shapefile (continued)

Charts – Crash Severity

Charts – Day of the Week

Summary Report

Detail Report

Crash Type Summary Report

Drive and Time Summary Report

Top 100 Intersections Report

Top 100 Intersections Report (continued)

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 • Mn. CMAT material presentation: Power. Point presentation used for three hour face-to-face Mn. CMAT training given by State Aid • All resources listed above available on the Mn. CMAT webpage 40

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. 41

Questions? Mark Vizecky mark. vizecky@state. mn. us 651 -366 -3839 42