FSD attempts a right turn from a left-turn-only lane
Summary
With FSD (Supervised) engaged while the vehicle was in a lane marked for left turns only, the system began a right-turn manoeuvre from that lane while traffic was moving in the target direction. The driver intervened before the manoeuvre was completed.
Written by White Box Autonomy from the sources listed below.
What is observable from the evidence
- The vehicle was travelling in a lane designated for left turns only.
- With FSD (Supervised) engaged, the vehicle initiated or attempted a right-turn manoeuvre from that lane.
- Moving traffic was present in the direction of the attempted manoeuvre.
- The driver intervened before the manoeuvre was completed.
- No collision occurred.
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 the lane-use restriction was perceived correctly.
- Whether road geometry, map information, lane markings or route guidance contributed.
- Whether the intended navigation route required a right turn.
- The exact time-to-collision or remaining safety margin.
- What trajectory the vehicle would ultimately have followed without intervention.
Interpretation
Curator interpretation — this goes beyond what the evidence directly shows
The event is consistent with an inappropriate manoeuvre selection relative to the marked lane-use restriction. The intervention prevented the attempted turn from progressing into moving traffic. The available video does not establish whether the underlying cause involved lane perception, map interpretation, route planning or another component of the driving-automation system.
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 attempted right turn from a left-turn-only lane
First-person clip recorded by White Box Autonomy showing an attempted right turn from a left-turn-only lane, ended by driver intervention.
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.