The Cab-Over
Truck accident case file: telematics logged the lane drift while the driver's phone was active. The machine was paying attention.
Explore the real law behind this episodeTranscript
TSLDaniel ran a flower shop. Mornings meant deliveries - that day, a wedding.
Tom BriggsHe was in his lane. Mostly. These things are split-second.
JenHis phone was active at the moment of the drift. The truck's own system logged a lane departure and no braking. He never touched the wheel.
TSLThe truck saw it coming. The driver was looking at his phone. The machine was paying more attention than the man.
Daniel ChoI had two hundred roses in the back. They all made it. I was the one that did not.
TSLHe spent his mornings making other people's days. Somebody couldn't spare him two seconds of attention.
The Cab-Over: Distraction and Vehicle Data
Daniel’s flower delivery ends beside a drifting truck. Phone activity and lane warnings need a shared timeline before they can explain the crash.
Phone activity is a lead, not the conclusion
49 CFR 392.80 prohibits texting while driving a covered commercial vehicle. 49 CFR 392.82 addresses hand-held telephone use. The precise activity and applicable exceptions matter.
An active phone does not by itself prove the driver was holding it, reading it, or distracted. Background data, another user, and lawful uses must be distinguished from the alleged conduct.
Align the clocks and identify the user
Compare records obtained lawfully with dashcam footage, lane warnings, braking records, locations, and witnesses. Establish which device belonged to whom, who was driving, and whether systems used the same time zone.
Preserve original exports and data-field definitions. A warning log may show a system detected something without establishing what the driver saw or why braking was not recorded. Short extracts should be checked against the surrounding data.
Reconstruct the lane movement
Markings, steering evidence, damage, and available views help explain when the drift began and whether another event contributed. Arizona’s lane-movement rule supplies a separate safety question. The flower-shop story humanizes the loss; the records must establish its cause.
Questions this episode raises
- Does a phone connection prove texting?
- No. Activity type, device user, and timing must be established.
- Can a warning log decide fault alone?
- No. Its meaning and limitations need comparison with video, vehicle movement, and other evidence.
Sources and further reading
- 49 CFR 392.80: Texting while driving
- 49 CFR 392.82: Hand-held telephone use
- A.R.S. 28-729: changing lanes safely
Episode explanation by Impact Legal. Updated .