Waymo robotaxi calls cops on riders handling loaded AR-style ghost gun — Waymo alerted San Francisco police, then juvenile riders were stopped and arrested

Following a tip-off from robotaxi firm Waymo, San Francisco police conducted a “high-risk vehicle stop” and arrested two juveniles last week. The crime? The Waymo had seen its two passengers handling a loaded AR-style assault rifle. Police that intercepted the car also found “suspected marijuana and mace spray,” reports SFGate.

Fully autonomous taxi cabs like the Waymo in this story are an increasingly common form of transport seen on the world’s roads. With no human driver, these electric vehicles are packed with sensors, cameras, and more, all tied into the software presence that is called the Waymo Driver. To ensure the utmost safety, the sensors also continually monitor passengers. This might typically check if passengers are following the rules regarding minor transgressions like smoking, or not wearing a seatbelt. In this case the cameras recognized something more serious.

From our understanding of the Waymo in-cabin camera monitoring procedure, humans may review footage when something is flagged by the in-car sensors. That may be how the source report can say that the AR was loaded, or that was a later discovery, from the police stop, that somehow got attributed to the Waymo phoning home.

According to the source report this incident took place at the 800 block of 40th Avenue, in the Outer Richmond neighborhood, just before 4am on Thursday, September 3. Alongside a loaded ‘ghost gun’ the police officers found suspected marijuana and mace. The individuals arrested, a male and a female, can’t be identified in the media due to their age. Reports say the specific charges they face are related to illegally possessing a firearm.

This isn’t the first case of a Waymo telling on is passengers. SFGate previously reported on San Mateo police being called after a pair of 15-year-olds were allegedly drinking alcohol and shooting toy ‘gel blaster’ guns in the taxi cabin.

Waymo robotaxis are now well established in San Francisco, Los Angeles, and some other major cities. Earlier in September, the service branched out into San Diego, Denver, and Tampa, Fla. More and more areas in the U.S. and abroad are giving the autonomous service permission to operate.