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Incident 1544: Waymo Robotaxi Reportedly Entered Flooded San Antonio Roadway and Was Swept Into Waterway

Description: An unoccupied Waymo robotaxi reportedly entered a flooded roadway near Salado Creek in San Antonio on April 20, 2026, and was swept into a nearby waterway. Waymo told regulators that the vehicle detected potentially untraversable floodwater but proceeded at reduced speed. No passengers were aboard and no injuries were reported. Waymo restricted operations and later recalled 3,791 fifth- and sixth-generation automated driving systems.
Editor Notes: Timeline note: The date of this incident ID is 04/20/2026; the ID itself was created 06/18/2026. See also: https://static.nhtsa.gov/odi/rcl/2026/RCLRPT-26E026-6527.pdf.

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Alleged: Waymo and Automated driving system developers developed an AI system deployed by Waymo , Robotaxi operators and Automated driving system deployers, which harmed Waymo and Road users.
Alleged implicated AI systems: Waymo Driver , Robotaxi systems , Automated driving systems , 6th-generation Waymo Driver and 5th-generation Waymo Driver

Incident Stats

Incident ID
1544
Report Count
3
Incident Date
2026-04-20
Editors
Daniel Atherton

Incident Reports

Reports Timeline

+1
Waymo temporarily suspends San Antonio operations after vehicle swept away by floodwaters
Waymo recalls entire fleet after driverless car gets stuck in San Antonio flood watersWaymo pauses robotaxis in five US cities after cars drive into flooded roads
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Waymo temporarily suspends San Antonio operations after vehicle swept away by floodwaters

Waymo temporarily suspends San Antonio operations after vehicle swept away by floodwaters

fox7austin.com

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Waymo recalls entire fleet after driverless car gets stuck in San Antonio flood waters

Waymo recalls entire fleet after driverless car gets stuck in San Antonio flood waters

sanantonioreport.org

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Waymo pauses robotaxis in five US cities after cars drive into flooded roads

Waymo pauses robotaxis in five US cities after cars drive into flooded roads

bbc.com

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Waymo temporarily suspends San Antonio operations after vehicle swept away by floodwaters
fox7austin.com · 2026

SAN ANTONIO, Texas - Waymo says one of its autonomous vehicles was swept away by floodwaters in the San Antonio area Tuesday.

What they're saying:

A Waymo spokesperson told FOX 7 Austin that an unoccupied Waymo vehicle had entered a flooded…

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Waymo recalls entire fleet after driverless car gets stuck in San Antonio flood waters
sanantonioreport.org · 2026

Waymo is recalling 3,791 vehicles after one of the company's driverless cars was washed away during flash flooding in San Antonio last month.

Waymo filed to recall vehicles installed with its fifth and sixth generation automated driving sys…

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Waymo pauses robotaxis in five US cities after cars drive into flooded roads
bbc.com · 2026

Waymo has now paused its self-driving car service in five US cities, in response to a software issue which has seen some vehicles enter flooded roads and get stuck.

The US firm recently issued a recall of thousands of robotaxis following an…

Variants

A "variant" is an AI incident similar to a known case—it has the same causes, harms, and AI system. Instead of listing it separately, we group it under the first reported incident. Unlike other incidents, variants do not need to have been reported outside the AIID. Learn more from the research paper.
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