Community Notice Regarding Automated License Plate Reader (ALPR) Data Sharing

Per Modesto PD:

“The Modesto Police Department recently identified an issue related to the configuration of data-sharing connections within our Automated License Plate Reader (ALPR) system. During a detailed review conducted as part of preparing a Public Records Act response, we found that several federal agency connections remained active despite prior efforts to align the system with current legal requirements.

Under California Civil Code § 1798.90.55, ALPR data sharing is limited to California public agencies. Upon identifying the issue, we promptly disabled and removed the affected connections.

The agencies included:

  • U.S. Forest Service
  • U.S. Park Police
  • IRS Criminal Investigations
  • San Diego Sector Border Patrol
  • MCL Barstow CID
  • Department of Veterans Affairs
  • U.S. Marshals Service

Following this review, we have taken additional steps to ensure full compliance moving forward.

We have since:

  • Discontinued the identified sharing connections
  • Conducted multiple verification reviews to confirm that no out-of-state or federal sharing remains active
  • Implemented mandatory monthly documented compliance audits
  • Strengthened policy language to clearly define legal sharing limitations
  • Elevated administrative oversight of the ALPR program

ALPR technology remains an important investigative tool. It assists in recovering stolen vehicles, locating missing persons, identifying vehicles connected to violent crimes, and supporting time-sensitive and ongoing investigations.
MPD remains committed to ensuring this technology is used strictly within the boundaries of California law.

In the interest of transparency, we are sharing this information with our community. Our updated ALPR policy is publicly available on our website. We will continue to review our systems and practices to ensure they align with both legal requirements and community expectations.”

This new revelation begs the question, should Modesto PD be sharing information with federal authorities like the US Marshals regarding fugitives on the run? California law apparently does not allow them to.