Illinois Traffic Stop Study

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Illinois Traffic and Pedestrian Stop Study

On July 18, 2003, Senate Bill 30 was signed into law to establish a four-year statewide study of data from traffic stops to identify racial bias. The study began on January 1, 2004 and was originally scheduled to end December 31, 2007. However, the legislature extended the data collection several times, and also expanded the study to include data on pedestrian stops. Public Act 101-0024, which took effect on June 21, 2019, eliminated the study's scheduled end date of July 1, 2019 and extended the data collection.

IDOT is responsible for collecting and compiling the data. IDOT has developed an Internet self-reporting application for submission of the data. Agencies have two options for entering data into the IDOT data collection system.

  • The agency can use the IDOT web site to enter data on individual stops.
  • The agency will have the option to compile the data using their own data application. The data can be exported from this application into a text file that can then be uploaded to IDOT's website.

Agencies using their own applications are encouraged to upload their data to IDOT at least once a month.

All agencies will need to be registered in order to enter or upload data using this website. They will also need to be registered in order to download the standalone applications. In order to register, please call Sean Berberet at 217-524-1117.

No later than March 1st of each year, all traffic and pedestrian stop data collected for the previous year must be submitted to IDOT.

To enter your traffic stop data, please go here

Traffic Stop Statistical Studies

Disclaimer: Each reporting law enforcement agency was responsible for the accuracy of their own data that was submitted to the IDOT.

To obtain a copy of the data, email IDOT at DOT.ITPSS@illinois.gov, and your request will be forwarded to the department’s FOIA Officer.

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The Racial Profiling Prevention and Data Oversight Act (20 ILCS 2715/5) was created to identify and address bias-based policing through the monitoring, review, and improvement of the collection of racial profiling information collected under the Illinois Traffic Stop Statistical Study. The Racial Profiling Prevention and Data Oversight Board consists of 15 members, which shall independently exercise its powers, duties, and responsibilities. The Board shall have the authority to allow additional participation from various groups that the Board deems necessary for additional input. P.A. 94-997, eff. 1-1-08.

Meetings