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Truck Accident Evidence Checklist: What to Gather and Preserve
Quick Answer
Key truck accident evidence includes scene photos and witness information, the police report, the truck’s black box and ELD data, the trucking company’s driver and maintenance records, and your medical and financial records.
- At the scene: photos, the driver's and trucking company's information, and witness contacts.
- Official records: the collision report, police dispatch records, and 911 records.
- Truck data: the black box (EDR), the electronic logging device (ELD), and dispatch and fleet communication records.
- Company records: driver logs, inspection and maintenance records, and the driver qualification file. Federal rules only require some of these to be kept for months, not years.
- Your records: medical records, bills, receipts, and proof of missed work.
After a crash with a large truck or bus, the claim often depends on one thing more than any other: evidence. Truck crashes create complex scenes, and much of the most important evidence is held by the trucking company, not by you. Use this checklist from Seattle Truck Law to see what evidence matters, who controls it, and why it’s important to act quickly. Our attorneys can gather most of this for you so you can focus on getting well.
Evidence at the scene
Collect what you can only if your injuries allow it. Your health comes first.
- Photos of the scene and vehicles — show where the vehicles ended up, road conditions, and the damage.
- Photos of your injuries and property damage — create a record from the first day.
- The truck driver's name, phone number, and license number — identifies who was driving.
- The trucking company's name and insurance information — the company may share responsibility for the crash.
- Witness names and contact details — independent accounts can cut through conflicting stories.
- Video or surveillance footage — nearby cameras may have captured the crash.
- Physical evidence left undisturbed — vehicle parts, tire tracks, and damaged property can help show what happened.
Official reports and public records
- The police collision report — usually lists the drivers, vehicles, insurance, witnesses, injuries, and the officer's initial view of the cause. In Washington, you can request it through the Washington State Patrol's WRECR system. The State Patrol says it may take up to 2–4 weeks before a report is available.
- Police department public records — may show when officers learned of the crash, which officers responded, and radio dispatch records. This helps if the report contains errors.
- 911 call records — can help identify witnesses who left before police arrived.
- A specialized investigator's report, if one exists — in complex crashes, an investigator trained in truck and bus crashes and federal trucking regulations may examine the scene in more detail than a responding officer.
Keep in mind that an officer’s opinion is not the final word. Insurance companies often rely on the police report, so an error in it can affect your claim.
Electronic data from the truck
- Event data recorder ("black box") — may record information such as the truck's speed and changes in speed, gear shifts, and when the driver braked.
- Electronic logging device (ELD) records — under federal rules, most drivers who must keep records of duty status must use an ELD (with limited exceptions). These records can show whether a driver was on duty longer than allowed. For property-carrying trucks, federal rules generally limit driving to 11 hours within a 14-hour on-duty period.
- Dispatch records, trip records, and fleet communications — federal rules treat these as supporting documents for a driver's hours, and they can show the driver's schedule and contact with the company.
Trucking companies are unlikely to hand this data over voluntarily, which is why attorneys move quickly to secure it.
Records the trucking company controls
- Driver's records of duty status (logs) and supporting documents — show hours worked and can reveal fatigue.
- Driver vehicle inspection reports — show what the driver reported about the truck's condition.
- Inspection, repair, and maintenance records — can reveal brake, tire, or equipment problems.
- Driver qualification file — includes the driver's employment application, driving records, road test certificate, and medical examiner's certificate.
- Drug and alcohol testing records — can show a history of substance use.
- Company hiring history, policies, and expectations — can show negligent hiring or unsafe company practices.
How long federal rules require trucking companies to keep key records
These are minimum retention periods under federal motor carrier regulations. After them, a company may no longer be required to keep the records, which is why time matters.
| Record | Minimum federal retention | Regulation |
|---|---|---|
| Records of duty status (including ELD records) and supporting documents | At least 6 months from receipt | 49 CFR 395.8(k), 395.11 |
| Driver’s own copy of the previous 7 days of logs | Must be with the driver while on duty | 49 CFR 395.8(k)(2) |
| Driver vehicle inspection reports and repair certifications | 3 months from the date the report was prepared | 49 CFR 396.11 |
| Inspection, repair, and maintenance records | 1 year, and 6 months after the vehicle leaves the carrier’s control | 49 CFR 396.3(c) |
| Driver qualification file | While the driver is employed, plus 3 years | 49 CFR 391.51(c) |
| Positive drug and alcohol test results (0.02 or greater for alcohol) | At least 5 years | 49 CFR 382.401(b)(1) |
| Negative drug and alcohol test results | At least 1 year | 49 CFR 382.401(b)(3) |
To help keep evidence from being lost, our attorneys can contact the trucking company early and ask in writing that it preserve the evidence related to your crash.
Medical and financial records
- Paramedic and ambulance records — show your condition right after the crash.
- Emergency room and doctor visit notes — link your injuries to the crash and record how severe they are.
- Treatments, prescriptions, and surgeries, past and planned — support the cost of your care.
- Physical or psychological therapy — documents recovery needs.
- Diagnoses and expected long-term effects — help estimate future medical needs.
- Current and long-term care needs — support claims for ongoing care.
- Medical bills and receipts — prove what you've spent.
- Vehicle repair bills — document property damage.
- Medical documentation that you had to miss work — supports a claim for lost wages.
If you don’t seek treatment, the other side will argue you weren’t really hurt. Mention every symptom at every visit so your records stay consistent.
Expert analysis
- Accident reconstruction — specialists, often with engineering or forensic backgrounds, may visit the scene, interview witnesses, calculate vehicle speeds and movements, and evaluate human error and environmental factors. Their findings can range from a report of calculations to a digital simulation.
- Expert witness testimony — reconstruction, medical, and mechanical experts can explain the evidence to a judge and jury, and their findings can also support settlement negotiations.
Why evidence matters for fault in Washington
Trucking companies and their insurers may try to place some of the blame on you. Under Washington law, your own share of fault reduces your compensation proportionately, but it does not bar recovery. Strong evidence helps counter inaccurate claims about who caused the crash.
General information, not legal advice.
Frequently Asked Questions
Start with what you can safely collect at the scene: photos, the driver’s and trucking company’s information, and witness contacts. Then get the police report and keep all medical records, bills, and receipts. The most important evidence often belongs to the trucking company, including black box data, ELD records, driver logs, and maintenance records. An attorney can request and help preserve that evidence for you.
Under federal rules, a motor carrier must keep each driver’s records of duty status and supporting documents for at least six months. Supporting documents include items like bills of lading, dispatch records, expense receipts, fleet communication records, and payroll records. Other records have different minimums, such as three months for driver vehicle inspection reports. That is why contacting an attorney quickly can make a difference.
A truck’s event data recorder, often called a black box, may record information such as how fast the truck was going, changes in speed, gear shifts, and when the driver braked. This data can help build a fact-based account of the crash and cut through conflicting witness statements. The trucking company controls the truck, so it’s important to act quickly to secure this data.
An electronic logging device (ELD) records a driver’s duty status. Federal rules require most drivers who must keep records of duty status to use one, with limited exceptions such as certain older vehicles. Because federal rules limit how long drivers can drive and be on duty, ELD records can show whether a fatigued driver was working longer than allowed.
Usually not on its own. The police report is important, and insurance companies often rely on it, but officers are not crash reconstruction experts and reports can contain errors. Police dispatch records, 911 records, witness follow-up, the truck’s electronic data, company records, and accident reconstruction can all add to or correct the picture. In Washington, you can request collision reports through the State Patrol’s WRECR system.
Related Resources
Contact the Seattle Truck Law Team Today
If you’ve been injured in a trucking accident, contact Seattle Truck Law at (866) 580-4878 or fill out our online form for a free consultation. You pay no fees or expenses unless we recover compensation on your behalf. Don’t wait—the sooner you contact us, the sooner our attorneys can preserve evidence, investigate your claim, and start building your case.