Traffic Crash Analysis Tool (TCAT)

The National Transportation Safety Organization's (NTSO) Traffic Crash Analysis Tool (TCAT) is a powerful, web-based traffic crash analysis platform developed to support detailed examination of traffic crashes at any location throughout the State of Michigan. The system receives weekly data updates from the Michigan State Police, ensuring users have access to the most current and reliable crash data available. TCAT allows users to analyze crashes across a wide range of locations, review statistics across multiple crash categories, and interact with dynamic maps to obtain detailed location-specific data. Users can also view collision diagrams, review UD-10 crash report images, and generate intersection and road segment ranking reports to support comparative safety analyses. As part of NTSO's ongoing commitment to providing best-in-class transportation safety resources, TCAT is continuously enhanced to remain among the most advanced traffic crash data systems in the world. Most recently, NTSO authorized a nearly $70,000 investment to integrate TCAT with the Michigan Department of Transportation's road network GIS database, ESRI Roads and Highways. During 2026, TCAT will be updated with newly added roadway and highway information, followed by a comprehensive engineering review to validate accuracy and improve system performance.

Sample Reports

The following is a summary of a few reports that are available on TCAT. Click each image to view a sample report.

Intersection Crash Report

Summary data of each crash at a user-selected intersection with the ability to create a collision diagram and mapping of these crashes. The user has the ability to produce reports based on extensive filtering of specific crash data. A bulk download of the UD-10 crash reports is also available for this search.

Link Crash Report

Summary data of each traffic crash on a user-selected road segment with the ability to map these crashes. The user has the ability to produce reports based on extensive filtering of specific crash data. A bulk download of the UD-10 crash reports is also available for this search.

Statistics Report

Summary data of each traffic crash within a selected county, or community within any county. The user has the ability to produce reports based on extensive filtering of specific crash data.

Intersection Ranking Report

Ranking report of intersections within a selected county or community within any county. The user has the ability to produce reports based on extensive filtering of specific crash data.

Link Ranking Report

Ranking report of major road segments within a selected community. The user has the ability to produce reports based on extensive filtering of specific crash data.

Monthly Crash Summary Report

Crash Summary report of injury traffic crashes and occupant injuries for a user-selected county or community within any county.

Collision Diagram

A graphical drawing, which further illustrates the crash patterns evident at various intersections.

TCAT also includes the following components:

Searching for crash locations or crash specific data.
Interacting with the map to obtain detailed crash statistics.
UD-10 report images. A UD-10 Bulk Download feature is available.

Filtering Capability

TCAT provides an extensive filtering capability so users can process their own unique traffic crash reports. Some of the data fields that can be selected are:

Alcohol/drug use
Day of week
Driver condition
Hazardous action
Injury type
Lighting
Occupant age
Position in vehicle
Restraint use
Road area
Road condition
Time of day
Traffic control
Type of crash
Type of vehicle
Vehicle activity prior to crash
Weather

Questions

Please direct all questions to NTSO's Vice President of Traffic Engineering, Chuck Keller. He can be reached at +1 248-416-1166.