Waymo’s driverless robotaxis drove straight into deadly floodwaters in Texas, exposing a massive software flaw that could endanger American lives despite the company’s tech promises.
Story Snapshot
- Waymo recalls 3,791 robotaxis after an unoccupied vehicle entered an untraversable flooded road in San Antonio on April 20, 2026.[1][2]
- Automated Driving System software slows but fails to stop on higher-speed roads detecting flooded lanes, per National Highway Traffic Safety Administration documents.[1][2]
- Recall affects fleets in Phoenix, San Francisco, Los Angeles, Austin, San Antonio, and Atlanta amid concerns over extreme weather handling.[1][2]
- No injuries occurred, but videos show other incidents like running red lights in Dallas and driving through flooded intersections.[1]
San Antonio Flood Incident Triggers Massive Recall
On April 20, 2026, an unoccupied Waymo autonomous vehicle entered a flooded section of roadway in San Antonio, Texas, during severe weather. The road had a 40 miles per hour speed limit. National Highway Traffic Safety Administration (NHTSA) documents confirm the vehicle slowed to a reduced speed but did not stop, getting swept into a creek.[1][2] Waymo filed a voluntary recall on April 30 for 3,791 vehicles equipped with flawed fifth and sixth generation Automated Driving Systems.[1][2]
Waymo operates robotaxis across six major cities: Phoenix, San Francisco, Los Angeles, Austin, San Antonio, and Atlanta. The software defect allows vehicles to traverse potentially untraversable flooded lanes on higher-speed roadways. This incident marks the second flood-related problem for Waymo in San Antonio within a month, prompting temporary operations halt.[2][3]
Software Flaw Endangers Public Safety in Extreme Weather
Waymo’s Automated Driving System detects flooded lanes but only slows, not stops, on roads above certain speeds. NHTSA recall filings detail this failure mode explicitly.[1][2] Additional video evidence from San Antonio shows Waymo vehicles stuck in flooded intersections, speeding through high water, or veering onto sidewalks to bypass floods.[1] In Dallas, dashcam footage captures a Waymo vehicle running a dim red light at Irving Boulevard, entering oncoming traffic.[1]
These edge cases highlight limitations in autonomous vehicle algorithms during adverse conditions like flash flooding. Experts note systems struggle with scenarios absent from training data, mirroring but amplifying human errors in unpredictable weather.[1] Nashville reports past complaints but no disruptions from this recall, despite its flood-prone streets.[3]
Waymo Implements Fixes Amid Ongoing Scrutiny
Waymo deployed interim mitigations immediately after the April 20 incident. Measures include refined extreme weather operations, updated vehicle maps, increased weather-related constraints, and restricted access to flash flood areas.[1][2] All affected vehicles received over-the-air updates by April 20, with a permanent software patch in development. No service center visits required.[2]
The company is issuing a voluntary software recall for 3,791 vehicles across two generations, after a robotaxi failed to navigate standing water 🤖 🚗 #Waymo #Robotaxis https://t.co/iNv2qO2OFe
— GEEKSPIN (@geekspinco) May 13, 2026
No injuries resulted from the San Antonio event or related incidents, as the vehicle was unoccupied.[1][2] A Waymo spokesperson stated: “We are working to implement additional software safeguards and have put mitigations in place.”[1] Critics question if these steps suffice, given patterns of AV failures in rain and floods documented in over 100 NHTSA investigations since 2016.[1] Trump administration oversight could push for stricter federal standards to protect American drivers from unproven tech overreach.
Sources:
[1] Web – Waymo recalls robotaxi fleet after one drove into Texas floodwaters
[2] Web – Waymo recalls over 3500 vehicles after robotaxi entered flooded …
[3] Web – Waymo Cars issue robotaxi recall after driving through flooded streets
