Crash Analysis

Crash mapping analysis tool (CMAT)

Crash mapping analysis tool (CMAT) is an easy to use software program that provides convenient access to Iowa crash data through a simple geographical information system (GIS) interface. CMAT and half-day training are available for free to cities, counties, state employees, consultants, researchers, and anyone else who wants to use crash data to make the roadways safer for the future. CMAT was developed by the Center for Transportation Research and Education at Iowa State University under the direction of the Iowa DOT's office of Traffic and Safety.

CMAT data will be updated through July 31, 2018. Please use the link below to request data updates for use in CMAT. Functionality found in CMAT can now be also be accessed using the web based SAVER tool. Data updates on webSAVER are currently done on a weekly basis and require no user intervention or downloads.

CMAT version

CMAT version 3.6.0 (released November 2006) is the current software version. CMAT version 3.7.0 has also been released to address a software conflict for law enforcement agencies who also use location tool or IMAT.

Features in CMAT version 3.6/3.7

  • Ten years of crash data (2001-2010)
  • Crash stacking
  • Crash info tool
  • Major cause and driver/time summary reports
  • Speed limits and traffic volumes (AADT)
  • CMAT software profile


Office of Traffic and Safety
Ph: 515-239-1557 | Fax: 515-239-1891

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