Waymo's In-Cabin Cameras Alert Police to Armed Passengers in San Francisco
A Waymo robotaxi's monitoring system detected two juveniles with a loaded ghost gun, prompting the autonomous vehicle to contact law enforcement and leading to arrests in San Francisco's Outer Richmond neighborhood.
After receiving an alert from Waymo, San Francisco police executed a "high-risk vehicle stop" that resulted in the arrest of two minors last week. The robotaxi's onboard sensors had detected passengers handling a loaded AR-style assault rifle inside the vehicle. Officers who stopped the car also recovered what they described as "suspected marijuana and mace spray," according to SFGate.
Autonomous taxis operating without human drivers, such as Waymo vehicles, have become increasingly prevalent in urban transportation networks worldwide. These electric vehicles rely on an array of sensors and cameras connected to the Waymo Driver software system. As part of their safety protocols, these systems continuously observe passenger behavior, typically flagging minor violations such as smoking or failure to wear seatbelts. In this instance, the monitoring technology identified a significantly more serious concern.
Based on available information about Waymo's cabin monitoring system, human reviewers examine footage when the vehicle's sensors detect anomalies. It remains unclear whether Waymo personnel determined the weapon was loaded through video analysis or whether this detail emerged during the subsequent police investigation and was later attributed to the initial report.
The incident occurred at the 800 block of 40th Avenue in the Outer Richmond neighborhood shortly before 4 a.m. on Thursday, September 3. Officers discovered the loaded ghost gun along with suspected marijuana and mace. The two arrested individuals—one male and one female—cannot be publicly identified due to their age. The charges filed against them relate to unlawful firearm possession.
This represents another instance of a Waymo vehicle reporting passenger misconduct to authorities. SFGate previously documented an incident in which San Mateo police were summoned after two 15-year-olds allegedly consumed alcohol and discharged toy gel blaster guns inside a Waymo cabin.
Waymo's robotaxi operations are now established across San Francisco, Los Angeles, and numerous other major metropolitan areas. The service expanded into San Diego, Denver, and Tampa, Florida during September. Additional jurisdictions throughout the United States and internationally continue to authorize the autonomous vehicle service to operate within their boundaries.