NTSB adds latest Waymo school bus incident to growing investigation AUSTIN, Texas — Federal investigators say a Waymo autonomous vehicle passed a stopped Austin ISD school bus on March 25 as it was loading and unloading students, the latest in a string of incidents that has drawn scrutiny from officials and the community. The National Transportation Safety Board announced it would fold the latest incident into an ongoing safety investigation that began last year, when Austin ISD announced over 20 school bus safety violations involving Waymo's self-driving cars. PREVIOUS COVERAGE | Waymo faces scrutiny over school bus safety violations in Austin The violations continued even after Waymo filed a software recall in December with the National Highway Traffic Safety Administration, with additional infractions recorded in December and January. At the time, Austin ISD asked Waymo to suspend operations during student pickup and dropoff times. The company declined. "They did not agree with our risk assessment and respectfully declined to stop operating," Austin ISD Police Chief Wayne Sneed said in December. PREVIOUS COVERAGE | Video captures Waymo driving in wrong lane near MLK and I-35 The school bus violations are part of a broader pattern of incidents in Austin. In early March, Waymo vehicles stopped past lowered railroad crossing gates on two separate occasions, and a vehicle was filmed briefly traveling in the wrong lane near the University of Texas campus. A Waymo spokesperson said, "We care deeply about safety on our roads, and we’ll continue to work with AISD and the NTSB on our shared safety mission." The NTSB said the investigation remains ongoing, with safety recommendations expected. CBS Austin has reached out to Austin ISD for more information.