On October 26, 2026, Jay Stanley of the American Civil Liberties Union (ACLU) warned that AI analysis of automated license plate reader (ALPR) histories may generate suspicion that contributes to police traffic stops. His article describes several individual U.S. cases, including a stop Grace Knowles said took place in September 2025.
How plate readings can become travel histories
An ALPR records a license plate reading or photograph along with the camera’s location and the time. Combining those records can build a history of where a vehicle traveled. The ACLU says AI tools may analyze those histories for patterns or associations and generate suspicion or alerts.
The ACLU uses the term pretextual stop for a traffic stop justified by an alleged minor violation while a different investigative purpose is concealed. Its concern is that travel-history analysis can create suspicion around a driver’s movements and contribute to such stops.
What Grace Knowles said happened
Knowles told the ACLU that an officer stopped her during a road trip in September 2025 and said a plate scan had revealed “suspicious travel patterns.” She said the officer showed her a map-like display with circles marking places she had been, then clicked through to photographs of her license plate. The account describes what Knowles says she saw during the encounter.
Other cases the ACLU describes
The ACLU recounts separate incidents involving different agencies and circumstances. In one, it says Border Patrol directed a local officer to stop a furniture-moving company driver about 100 miles from the Mexican border after a trip from South Carolina. A search found nothing illegal in the truck; officers arrested the driver on suspicion of money laundering and seized his cash.
The ACLU also describes a California grandmother questioned by U.S. Customs and Border Protection about visits to local casinos, apparently based on her driving patterns. In a separate Texas case, a jury sided with Alek Schott over a surveillance-driven stop. The ACLU also recounts an April 2025 stop involving a man who had traveled between Wisconsin and Michigan.
These are distinct reported cases involving local police, Border Patrol and Customs and Border Protection, not a count of how often AI-linked stops occur across U.S. law enforcement.
