AI Risk Wire

Cases › operational mistake › LR-2026-0598

Waymo recalls about 3,900 robotaxis over freeway construction zones

Preliminary Why: 1 report: CNBC · subject to change · 1 independent report

Developing: a major or severe case captured in the last 72 hours. Later changes are logged on the corrections page.

Status: fix reported

Severity major
Reported 18 Jun 2026
Developer and model Waymo
Industry Autonomous ride-hailing (robotaxi)

No source states: loss or records, agent tool, could do, deployer.

Severity major: Test: regulator involved. Fact: the recall notices were filed with the National Highway Traffic Safety Administration.

Waymo's robotaxis, which run its fifth-generation automated driving system and were serving public riders on freeways in several US cities, entered freeway construction zones. Filings describe 13 known incidents: six in Phoenix in April and seven in San Francisco in May, in which vehicles drove into closed or active construction zones. Waymo temporarily restricted freeway operations while it investigated, proactively notified state and federal regulators, and filed a voluntary software recall with NHTSA covering almost 3,900 vehicles. The company says it is developing a remedy and has limited robotaxi availability on freeways in the meantime. The sources do not state that any collision occurred.

What happened

1 · What it was doingThe robotaxis were serving public riders on freeways in several US cities.
2 · What went wrongUnder certain circumstances, vehicles could enter and drive at speed in freeway construction zones.
3 · How it was caughtThe company reviewed the incidents and decided to initiate a recall.

What was done

Fix reported

“Software remedy under development; robotaxi availability on freeways limited in the meantime”

Same developer, same risk, after the fix: LR-2026-0188 · LR-2026-0634

Risks

Physical harm
Primary43 incidents

Read from the sources; not yet reviewed by a person.

Controls

Not yet read for controls. Controls that mitigate the primary risk:

Harness

Stop control

Application

Physical safety interlocks · Human approval for high-impact actions · Live behaviour monitoring · Adversarial testing before deployment

Similar incidents

Waymo robotaxis drive into flooded roads, prompting recall and service pauses in five US cities2026-05-22
Waymo robotaxi veers into Harlesden crime scene2026-04-24
Waymo robotaxi maneuvers around stopped, unloading school bus in Atlanta2026-10-15
Atlanta Waymo robotaxi burns after 33 mph crash2026-07-27

All cases of this kind ›

Evidence

No source states: what it reached or did, when it happened, when it was found, how many records were exposed, the direct loss, a count of the other parties affected, any court case, the cause, what set it off, what was done.

Show the full account: 6 items from the primary sources

What happened, in order

  1. April Six incidents: Waymo vehicles drove into closed freeway construction zones in Phoenix.
  2. May Seven incidents: robotaxis entered freeway lanes with active construction in San Francisco.
  3. June 1 Waymo's Safety Board reviewed the incidents.
  4. June 8 Waymo's Safety Board decided to initiate a recall.

Not dated in the sources:

  • Waymo voluntarily restricted freeway operations and notified state and federal regulators.
  • The recall filings were published with NHTSA.
Show every field, with its source and grade

The AI system

Model version
5th-generation automated driving system (ADS)
C one secondary source states it
Developer
Waymo
C one secondary source states it
Stage of use
in live use
C one secondary source states it
What it was for
Commercial robotaxi service
C one secondary source states it

What happened

Earliest source we hold
2026-06-18
D inferred by us from the described behaviour, reason shown
Cause in detail
The vehicles may enter and drive at speed in freeway construction zones due to inappropriately prioritizing the avoidance of other freeway hazards and/or failing to recognize the construction zone.
C one secondary source states it
Who was responsible
the model provider
C one secondary source states it
What was stopped
Freeway operations voluntarily restricted
C one secondary source states it
What was done
Software remedy under development; robotaxi availability on freeways limited in the meantime
C one secondary source states it
What went wrong
operational mistake
D inferred by us from the described behaviour, reason shown
AI agent
an AI agent acted
C one secondary source states it
primary risk
RK18
D inferred by us from the described behaviour, reason shown

Impact

Severity
major
D inferred by us from the described behaviour, reason shown
Why this severity
Test: regulator involved. Fact: the recall notices were filed with the National Highway Traffic Safety Administration.
D inferred by us from the described behaviour, reason shown

Context

Industry
Autonomous ride-hailing (robotaxi)
C one secondary source states it
Country
United States
C one secondary source states it

Notes on gaps

Waymo's remedy was still in development when reported, so no completed change or added control is stated and remediations is empty.

LR-2026-0598 · version 1 · published 2026-11-01 after automatic checks; not yet checked field by field by a person · JSON