DETROIT (Michigan News Source) – License plate readers are helping solve crimes along Detroit freeways.

The Michigan State Police began installing the readers along the I-96 and the Southfield Freeway because road rage and shootings were a common occurrence. Officials say the license plate readers are part of a pilot program to help officers identify a suspect’s car that may have been involved in a crime. Police say they used it 90% of the time to arrest suspects involved in freeway shootings.

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The cameras are also used in Amber Alerts and in Silver Alerts when trying to help find someone who might be missing. The license plate readers are not used for traffic offenses.