Self-Driving Robotaxi Recall After San Antonio Flood Incident

Waymo, the autonomous vehicle division of Alphabet Inc., is recalling nearly 3,800 robotaxis across its U.S. Fleet following an incident in which an unoccupied vehicle was swept away by floodwaters in San Antonio, Texas. The recall, announced as a voluntary software update, stems from an April 20 incident where the vehicle entered a flooded section of Interstate 35 near Seguin Road—a roadway known for flash flooding—despite detecting the hazard. The National Highway Traffic Safety Administration (NHTSA) confirmed the recall, citing the need for “additional software safeguards” to prevent similar occurrences during extreme weather.

The affected vehicle, which was unoccupied at the time, was found downstream after heavy rainfall, though no injuries were reported. The incident prompted Waymo to suspend operations in San Antonio—a city prone to flooding—and temporarily narrow its operating scope to restrict access to areas with high flash-flood risks. The company stated in a statement to NHTSA that it is refining its extreme-weather protocols, including limiting service during periods of intense rainfall and updating service-area maps to exclude high-risk zones.

This is not the first time Waymo has faced challenges with flooding in Texas. A second incident occurred in April, when another autonomous vehicle struggled to navigate standing water in Austin. The recall, which applies to the company’s robotaxi fleet, marks a significant step in Waymo’s efforts to enhance safety amid growing scrutiny over autonomous vehicle reliability in adverse conditions.

Waymo’s recall follows a pattern of voluntary updates to its self-driving software, reflecting broader industry concerns about autonomous systems’ ability to handle unpredictable environments. The NHTSA’s involvement underscores the regulatory focus on ensuring that autonomous vehicles meet safety standards, particularly in regions with extreme weather vulnerabilities.

Passengers using Waymo’s robotaxi service outside San Antonio are unlikely to experience immediate disruptions, though the company has advised that operations may be temporarily suspended during severe weather events. The recall is expected to be implemented through a software update, with Waymo emphasizing that no hardware changes are required.

For further updates, Waymo has directed users to its official communications channels, where additional details on the recall’s timeline and operational adjustments will be provided.