FSD changes course within an intersection toward a red signal
Summary
While traversing an intersection with FSD (Supervised) engaged, the vehicle changed its path or heading, and the revised trajectory moved toward a direction associated with a red traffic signal so far as the recording shows.
Written by White Box Autonomy from the sources listed below.
What is observable from the evidence
- The vehicle entered or was travelling through an intersection with FSD (Supervised) engaged.
- While within the intersection, the vehicle changed its path or heading.
- The revised trajectory took the vehicle toward a movement associated with a red traffic signal, so far as is clearly visible from the evidence.
- The behaviour prompted driver concern.
- No collision occurred in the recorded event.
Automation status
Driving automation engaged — confirmed
Whether the driving-automation feature was engaged is a separate question from whether it caused the event.
System / software version
Not identified in the available sources.
Causal attribution
Undetermined
The available evidence does not establish a cause. Involvement of a driving-automation system is not the same as its being a cause.
What remains unknown
- Whether lane geometry, turn-path interpretation, lane assignment, route guidance or traffic-signal association contributed.
- Whether the visible red signal definitively applied to the trajectory the system was attempting to follow.
- The path the vehicle would ultimately have followed without intervention.
- Whether map data, perception, localisation or planning contributed.
- Whether and when the driver intervened.
Interpretation
Curator interpretation — this goes beyond what the evidence directly shows
The event is consistent with an inappropriate change in planned trajectory while traversing an intersection. The resulting path appeared to align with a movement controlled by a red signal. The available external evidence does not reveal whether the underlying issue arose from lane interpretation, signal association, localisation, route planning or another component.
Sources & evidence
The sources below are the evidence. The summary and any interpretation on this page are written by White Box Autonomy and are not themselves evidence.
YouTube video · White Box Autonomy
White Box Autonomy video showing an unexpected trajectory change within an intersection
First-person clip recorded by White Box Autonomy showing a mid-intersection change of course toward a red-signalled direction.
About this record
Review status: Curator-reviewed. What the review statuses mean.
Record last reviewed or updated: 30 August 2026.
To report an error or raise a concern about this record, contact zuduo.zheng@uq.edu.au.