Google Maps falsely shows highway closures across Germany

What happened

On May 29, 2025, during the Ascension Day holiday break, Google Maps displayed road closure warnings across major German cities including Hamburg, Berlin, Frankfurt and other areas, as well as parts of Belgium and the Netherlands. The false warnings showed numerous red-dotted road segments indicating highway closures.

Police in Hamburg, Frankfurt, Mainz and North Rhine-Westphalia confirmed that no actual road closures existed. After several hours, the incorrect closure indicators disappeared from the service. Google stated it reviewed the information and removed false sperrungen after verification.

Reported impact

Drivers relying on Google Maps were confused about widespread apparent highway closures during one of the busiest holiday periods. The false closure reports caused drivers to seek alternative routes on smaller roads, leading to congestion on alternative thoroughfares and lengthy delays.

Police and traffic authorities received numerous inquiries from the public seeking help. Drivers switching to alternative navigation apps such as Apple Maps or Waze, or consulting radio traffic reports, received accurate information reflecting that traffic was flowing freely on the supposedly affected routes.

Index analysis

Google stated that Google Maps information comes from a combination of third-party data providers, public sources, and user-submitted inputs. The company noted that these sources generally provide a strong basis for comprehensive and current map material.

The cause of the incorrect closure warnings remained unclear. In early May 2025, Google had similarly displayed highway tunnels in Thuringia as incorrectly closed; police complaints led to those inaccurate navigation announcements being corrected.

Governance controls

Google invited users to report errors through the service. The company indicated that once users flagged the irregularities, the service began checking and removing incorrect closure signs.

Classification

Category

Reliability and hallucination

Industry

Mobility and autonomous vehicles

Country

Germany

Harm status

Actual harm

Intent

Unintentional

Timing

Post-deployment

Harm types

Public interest

Harmed

Consumers, General public

Failure modes

Hallucination

Consequences

Content removal

Sources and evidence