More than 3,000 Waymo self-driving taxis have been recalled for a software update after reports that the vehicles improperly passed stopped school buses.

The fifth generation Automated Driving Systems operating software was updated in all vehicles by Nov. 17, according to documents filed with the U.S. National Highway Traffic Safety Administration.

The software may cause the vehicle to pass a stopped school bus even when the red lights are flashing and/or stop arm is extended.

The NHTSA started an investigation in October into a “media report that a Waymo AV failed to remain stopped when approaching a school bus that was stopped with its red lights flashing, stop arm deployed and crossing control arm deployed.” That incident occurred on Sept. 22 in Atlanta, Georgia.

The NHTSA also r

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