Miami has officially entered its driverless era. After more than a year of quietly testing autonomous taxis on local streets, Waymo has flipped the switch on public service across much of the city, launching its self-driving ride-hailing fleet in a 60-square-mile service area that covers big chunks of Miami, plus Coral Gables and South Miami.

The National Transportation Safety Board said it opened the investigation after Waymo robotaxis illegally passed stopped school buses in Texas.