More than 3,000 Waymos are being recalled due to a software issue that could cause them to drive into floods.

Waymo said on Tuesday it is recalling about ​3,800 robotaxis in the United States after identifying a ‌risk that vehicles could enter flooded roads with higher speed limits, raising safety concerns.

According to the NHTSA, on April 20, an unoccupied Waymo autonomous vehicle entered an untraversable flood section of a roadway with a 40 miles per hour speed limit at a reduced speed.