Aurora: four children handcuffed face-down after a plate matched a motorcycle

Aurora officers stopped Brittney Gilliam's SUV after a system flagged it as stolen. The actually-stolen vehicle was a motorcycle registered in Montana that shared a plate number with her Colorado plate — the system compared digits without comparing issuing state or vehicle type.

Brittney Gilliam was driving her 6-year-old daughter, her 17-year-old sister, and her 12- and 14-year-old nieces to get their nails done. Officers stopped the SUV in a parking lot after the department’s system flagged it as stolen.

The stolen vehicle was a motorcycle, registered in Montana. Gilliam’s was an SUV registered in Colorado. The two shared a plate number.

The system compared digits. It did not compare the issuing state, and it did not compare the vehicle type. Officers ordered everyone out at gunpoint and handcuffed four children face-down on the pavement.

The specific failure

Plate numbers are only unique within a state. A seven-character sequence issued in Montana can be issued again in Colorado to an entirely different vehicle. Any system that matches on the number alone will therefore generate cross-state collisions as a matter of routine — not as a rare malfunction.

The safeguard against that is the human check: does the vehicle in front of me match the vehicle in the alert? In Aurora, as in San Francisco eleven years earlier, that check did not happen before the guns came out.

This is what “the technology is just a tool” leaves out. The tool produces a confident-looking alert, and the confidence is what people act on.

Outcome

Officers ordered everyone out at gunpoint and handcuffed the children face-down on the asphalt. The City settled for $1.9 million in February 2024.

Sources

  1. Reporting and settlement coverage, Aurora ALPR stop
  2. EFF: The human toll of ALPR errors