GoKawiilAmazon -owned Zoox recalled software in 105 of its robotaxis over concerns its vehicles failed to detect heavy smoke and drove into it.
Zoox notified the National Highway Traffic Safety Administration of the recall on July 8 and said it became aware of the smoke detection issue following an incident last month.
On June 20, an unoccupied Zoox robotaxi encountered heavy smoke that obscured an active emergency fire scene that was not cordoned off with cones, the company wrote in its report. The vehicle entered the scene, then braked hard while attempting to steer away before coming to a stop, Zoox said.
The company said the incident took place in Las Vegas.
A Zoox teleguidance employee instructed the vehicle to reverse, then first responders placed traffic cones to block off the scene, according to the report.
Zoox said it investigated the incident and determined it's "the only event of this kind" that has occurred. No injuries were identified.