FSD does not follow road markings on a low-traffic street
Summary
At around 4 a.m. on a street with little or no visible traffic, with FSD (Supervised) engaged, the vehicle's path did not consistently follow the visible road markings and lane layout.
Written by White Box Autonomy from the sources listed below.
What is observable from the evidence
- The event occurred at approximately 4 a.m.
- Traffic was very light or absent in the visible scene.
- Road markings were present.
- With FSD (Supervised) engaged, the vehicle did not consistently follow the marked roadway or lane guidance.
- The vehicle's path was inconsistent with the expected movement indicated by the visible road markings and traffic-control layout.
- 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 road markings were perceived correctly.
- Whether map information or route guidance conflicted with the physical road layout.
- Whether lighting, road-surface condition or marking quality influenced the behaviour.
- Whether perception, localisation, planning or another component contributed.
- Whether the same behaviour would occur during daylight or in heavier traffic.
- Which specific road rules, if any, were breached.
Interpretation
Curator interpretation — this goes beyond what the evidence directly shows
The event is consistent with a failure to interpret or comply with visible roadway guidance in a low-traffic environment. The relatively simple surrounding traffic conditions make the behaviour noteworthy, but the external video alone cannot establish why the system selected that path.
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 inappropriate path selection relative to road markings
First-person clip recorded by White Box Autonomy showing path selection inconsistent with road markings on a near-empty street at night.
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.