Modern vehicles don’t just crash—they record. In many Texas wrecks, some of the strongest “who did what” evidence isn’t a witness or a skid mark. It’s the data stored inside the vehicle’s computer systems—especially the event data recorder (EDR) and related infotainment/telematics systems.
If you’re dealing with a serious collision in San Antonio or anywhere in Texas, understanding this data (and preserving it fast) can make a real difference in how liability is decided and how an insurance claim is evaluated.
Quick Answer: What does my car record right before a crash?
Many vehicles contain an Event Data Recorder (EDR)—sometimes called a “black box”—that records technical vehicle and occupant information for a brief period (seconds, not minutes) before, during, and after a crash.
Depending on the make/model and the type of crash event, this can include things like speed, brake use, throttle position, steering inputs, seat belt status, and airbag deployment timing.
Historically, federal EDR standards focused on 5 seconds of pre-crash data at a modest sample rate, but federal rules have been updated to extend pre-crash capture requirements (for vehicles with qualifying EDRs) to as much as 20 seconds at a higher sample rate—which can create an even clearer second-by-second picture in newer vehicles.
“Infotainment evidence” vs. EDR evidence: what’s the difference?
People say “infotainment system,” but crash evidence usually comes from multiple sources:
- EDR (event data recorder): crash-event data (seconds around impact).
- Infotainment head unit: call/text integration, paired devices, navigation prompts, sometimes timestamps.
- Telematics services: systems that can transmit crash-related information (depending on vehicle/service settings).
- Your phone: call logs, app usage, Bluetooth connections, location history (often the most direct “distraction” evidence).
A practical way to think about it
- If the dispute is speed/braking/seatbelt/airbag timing, the EDR is often the anchor.
- If the dispute is distraction (calls/texts/navigation use), it’s usually phone + infotainment/telematics.
What your car may reveal 5 seconds before impact (and why insurers care)
Those last few seconds are where liability arguments live:
- Speed trend: Were you accelerating, coasting, or slowing?
- Brake application: Did you brake at all—and if so, when?
- Throttle position: Were you on the gas?
- Steering inputs: Were you correcting, drifting, or turning?
- Seat belt status & restraint timing: Often matters in injury disputes.
- Crash severity indicators: Can help explain injury mechanisms.
NHTSA describes EDRs as recording “seconds, not minutes” of vehicle/occupant data around a crash event. And federal EDR rules define uniform requirements for vehicles equipped with EDRs regarding the collection and retrievability of crash event data.
Table: Common “hidden” data sources after a Texas car wreck
| Data source | What it can show | Why it matters in a claim | How it’s typically retrieved |
|---|---|---|---|
| EDR (“black box”) | Speed, braking, throttle, steering inputs, seat belt status, airbag timing (seconds around crash) | Fault disputes (rear-end, red-light, unsafe speed), injury causation arguments | Specialized download tools; sometimes forensic imaging |
| Infotainment head unit | Pairing history, connected device activity, navigation prompts, sometimes timestamps | Distraction arguments; lane drift or “missed turn” disputes | Forensic extraction or imaging (varies by make/model) |
| Telematics / crash notification systems | Possible collision notification data; timestamps; sometimes location/status data | Confirms timing, severity indicators, possible post-crash events | Vendor records + legal process as needed |
| Your smartphone | Calls/texts, app usage, notifications, location history | Distracted driving, timeline, route | Phone export, carrier records, forensic download |
| Aftermarket devices (dashcam, OBD dongle, fleet trackers) | Video, speed/GPS, harsh braking alerts | Clear liability evidence | Device download + account records |
Texas-specific issue: who can access your vehicle’s recorded crash data?
Texas has a statute addressing manufacturer-installed “recording devices” in vehicles and limits who can retrieve recorded/transmitted crash-related information other than the vehicle’s owner, with exceptions such as owner consent, a court order, certain safety research, or emergency response purposes.
In real cases, that means access often turns on:
- Who owns the vehicle (and whether it’s leased/financed),
- Whether the owner consents, and/or
- Whether lawyers need to use the court process to preserve and retrieve data properly.
Why this evidence disappears faster than people realize
Crash data is not always stored forever. Some systems:
- Record in a loop and overwrite as the vehicle continues to operate.
- Can be altered by repairs, battery disconnects, module replacement, or post-crash events.
- May be lost if the vehicle is totaled and moved through salvage without preservation steps.
That’s why “wait and see” can be risky—especially when fault is disputed.
What to do after a crash in San Antonio or Bexar County: a preservation checklist
If you can do so safely (and without interfering with emergency response), here are practical steps that help preserve electronic evidence:
In the first 24–48 hours
- Photograph the interior (dashboard warnings, screen prompts, clock time if visible).
- Don’t “factory reset” the vehicle or delete paired phones from the head unit.
- Avoid unnecessary key cycles (turning the car on/off repeatedly), if the car still powers up.
- Document towing/storage location and who has control of the vehicle.
- Preserve your phone (don’t wipe it; avoid deleting apps/messages connected to the timeline).
In the first 1–2 weeks
- Get a copy of the crash report when available.
- Keep a written timeline of symptoms, medical visits, and work missed.
- Save all insurer communications (emails, letters, claim numbers).
How insurers use (and challenge) EDR/infotainment evidence
Insurance adjusters look for clean narratives:
- “They never braked.”
- “They were speeding.”
- “Seat belt wasn’t in use.”
- “The timing doesn’t match the story.”
But electronic evidence can be misread or oversold. Common issues include:
- Not every crash triggers an EDR event the same way.
- Some values reflect system thresholds, not a full minute-by-minute driving history.
- Interpretation may require context: road grade, wet pavement, mechanical issues, or evasive maneuvers.
A careful claim presentation ties the electronic data to physical evidence (vehicle damage, scene photos, medical records) and witness statements.
Texas liability: why “percentage of fault” matters
Texas follows proportionate responsibility rules. In general terms, if a person is found more than 50% responsible, they can’t recover damages in that claim.
That’s one reason why “5 seconds before impact” evidence matters: it can move the needle on who is assigned what percentage of responsibility.
How long do I have to act in Texas?
In many Texas personal injury cases, the general limitations period is two years from the date the claim accrues.
But evidence preservation is a separate issue—digital crash evidence can be affected far sooner than any filing deadline.
Attorney Insight: the “silent fight” happens before the lawsuit
Most people think the case begins when a lawsuit is filed. In reality, many disputes are decided earlier—during the period when:
- The vehicle is being moved, stored, repaired, or sent to salvage,
- The insurer is forming an early liability position, and
- Key data may still be retrievable (or may be lost).
In serious-injury cases or disputed-liability crashes, a fast, organized approach to preserving the vehicle and related electronic data can prevent avoidable arguments later.
FAQs (short answers)
Can the other driver’s insurance download my car’s crash data?
Often, not without the right access/permission or legal process. Texas law restricts retrieval by non-owners with limited exceptions (including owner consent or court order).
Can I get my own EDR/infotainment data?
Sometimes, but it may require specialized tools and proper handling. In many cases, it’s best done in a way that preserves chain of custody (especially if liability is contested).
What if my car is totaled and sitting in a salvage yard?
That’s a common danger zone for evidence. Vehicles can be moved, damaged further, or processed quickly. If the case may involve serious injuries or a major liability dispute, preservation steps should happen as early as possible.
Does every car have an EDR?
Many do, but not all vehicles record the same elements or keep data the same way. NHTSA notes “EDR” can refer to different devices; their research definition focuses on brief crash-event recording.
Is “infotainment evidence” the same as proof of texting?
Not necessarily. The cleanest distraction evidence is often phone/carrier data. Infotainment data can be helpful context, but it isn’t always a direct “text sent at X:XX” record.
Next steps if fault is disputed (or injuries are serious)
If you were hurt in a crash in San Antonio or Bexar County and there’s an argument about speed, braking, distraction, or seat belt use, it may help to talk with a lawyer who can evaluate both the legal claim and the technical evidence.
Ryan Orsatti Law
4634 De Zavala Rd, San Antonio, TX 78249
Phone: 210-525-1200
“This blog is for informational purposes only, not legal advice. Reading it does not create an attorney-client relationship. Past results do not guarantee future results.”