A Waymo robotaxi alerted San Francisco police after detecting a firearm-related violation involving two juvenile passengers early Thursday, September 3. Officers stopped the vehicle at about 4 a.m. in the 800 block of 40th Avenue in the Outer Richmond neighborhood and arrested a male and female juvenile.
Police recovered a loaded AR-style ghost gun, suspected marijuana and mace spray from the vehicle, as first reported by The Verge. The company confirmed to the Los Angeles Times that the vehicle belonged to its fleet and said it stopped before contacting authorities after detecting a firearm-related breach of its service terms.
The incident puts robotaxi monitoring in focus
Unlike a conventional cab, the driverless service has no person behind the wheel to assess what is happening in the cabin. Its vehicles use cameras and other sensors to monitor the car and its occupants, allowing the system to flag suspected safety issues and bring a ride to a halt.
The passengers were taken to juvenile hall, and the reported allegations involved illegal firearm possession. The recovery of a weapon shows how a safety system designed to operate a vehicle can also trigger a police response when riders allegedly violate the platform’s rules.
Waymo’s expanding network raises the stakes
The episode matters because the company operates paid robotaxi services in San Francisco, Los Angeles and other U.S. cities. It expanded to San Diego, Denver and Tampa earlier in September, increasing the number of riders subject to the platform’s in-car monitoring and enforcement processes.
It also follows a reported San Mateo case involving two 15-year-olds accused of drinking alcohol and firing toy gel-blaster guns inside one of the company’s vehicles. That earlier incident and this arrest show the practical safety and conduct issues that arise when autonomous cabs operate without a human driver.
It remains unconfirmed whether company personnel reviewed cabin-camera footage before police were contacted. Reporting also has not established whether the operator or officers first determined the firearm was loaded, the juveniles’ precise charges or court outcomes, and the year of the September 3 incident.
This article was produced with AI assistance from multi-source reporting and is published under our editorial standards.
