Suppose a truck driver recalls stopping at a rest area, while a delivery timestamp places the truck at a warehouse during that period. The driver may be recalling a different stop, or the timestamp may have been entered late. Before drawing conclusions, lawyers need to preserve both accounts, confirm that they concern the same trip and check the timing. Each record needs to be examined alongside the other available evidence.
Start With the Question Each Record Can Answer
Different systems capture different parts of a trip. Identify the source and purpose of each record before using it to support an account of the collision.
Driver logs. For trucks subject to electronic logging device (ELD) requirements, 49 CFR 395.26 requires automatic recording of fields including date, time, vehicle location, engine hours and vehicle miles. These fields help place recorded events in time and location. FMCSA's ELD guidance explains that speed, braking and steering are not required ELD fields. A combined fleet system may collect those additional details, so reviewers need to check what the installed system records.
Video. A dash camera or roadside camera can help establish sequence and position. Its usefulness depends on what the footage captures. Glare, low resolution, a blocked view or a recording that starts too late can leave key moments out of frame. Reviewers should identify which details are visible and which remain uncertain.
Dispatch records. Dispatch and trip records are among the supporting-document categories listed in 49 CFR 395.11. They provide another timeline to compare with the driver's log.
Maintenance history. Section 396.3 requires the inspection, repair and maintenance records it covers to be retained for one year and for six months after the vehicle leaves the carrier's control. A repair entry can document work performed. Establishing whether a defect contributed to the collision requires further evidence.
Recording both extracted evidence and its interpretation helps keep a log entry separate from conclusions about the driver's actions.
Preserve the Files Before They Change
Evidence preservation starts with identifying who holds relevant records and asking them to retain those materials. Obtaining access is a separate step.
Identify the record holders. The carrier may hold logs, dispatch messages and maintenance files. A camera vendor or a nearby business may hold video. Section 395.22 requires carriers to retain a six-month backup of ELD records on a device separate from the original data. Ask about that backup rather than assuming the in-cab unit is the only source. Someone weighing legal help after a Fort Worth crash can review Stogner Trial Law's Truck Accident Lawyer page to see which records a lawyer may examine.
Ask for preservation. A focused preservation request identifies the crash, vehicle, driver, time window and record categories. Its immediate purpose is retention. Getting copies of the materials may require later steps, such as discovery, a subpoena, an inspection agreement or a court order.
Under 49 CFR 395.8(k)(1), carriers must keep the covered duty-status records and supporting documents for at least six months from receipt. That minimum applies to the records covered by the rule. It does not establish a retention period for every type of collision evidence or tell you how long camera footage will remain available. Preservation obligations related to a claim require separate consideration.
Document how files are handled. NIST defines chain of custody as the documented history of who handled evidence, when it was collected or transferred and why. Keeping that history lets reviewers trace the handling of a file, although it does not guarantee admissibility.
For materials already in your possession, keep original photographs, messages and receipts in their original form, and avoid editing, cropping or deleting anything selectively. Leave the truck's equipment alone, and do not access another party's accounts. Collection from those sources should be handled by authorized professionals.
Build and Test a Timeline Before Assigning Fault
Compare the accounts. Suppose a log marks the driver off duty while a dispatch message asks him to confirm a pickup. Check whether the driver read or responded to the message and whether both records concern the same driver, truck and trip. The message alone leaves those questions unanswered.
A changed entry also needs context. Under 49 CFR 395.30(d)(3), edits proposed by a system or anyone other than the driver require the driver's electronic confirmation or rejection. Review the proposed change and the driver's response before deciding whether the entry raises a concern.
Check the gaps. In its investigation of a 2021 Phoenix crash involving a milk tank truck, the NTSB used the driver's interview, phone and work records to estimate about 5.5 to 6 hours of sleep opportunity on the day of the crash. Records like these can show time available for rest. They cannot show how well a driver actually slept. Likewise, a missing field needs investigation before anyone treats it as evidence of fault. A review quality checklist that marks missing or unclear entries separately from confirmed ones keeps those gaps visible during review.
Connect conduct to responsibility. Lawyers examine vehicle condition and company decisions, including scheduling and maintenance, alongside the driver's actions. Their legal significance depends on the facts and applicable law. A repair record or safety-rule violation still needs to be examined in relation to how the collision happened.
Conclusion
Digital records rarely tell the whole story of a truck crash on their own. A driver log places the truck in time, video shows what the camera could see, dispatch messages show what the company asked for, and maintenance files show what work was done. Each answers a different question, and each has limits.
Electronic vehicle data or event recorder information, driver conduct and safety-rule compliance can be compared with video, dispatch messages and maintenance history to test an account of the collision and identify unresolved questions. The records that matter most can also be the first to disappear, so identifying who holds them and asking for preservation early keeps the full picture available when fault is assessed.
Frequently Asked Questions
How long do trucking companies have to keep driver logs?
Under 49 CFR 395.8(k)(1), carriers must keep covered duty-status records and supporting documents for at least six months from receipt. Section 395.22 also requires a six-month backup of ELD records on a device separate from the original data. These are minimums for the covered records only, so other evidence, such as camera footage, may not last that long.
Does an ELD record a truck's speed or braking?
Not necessarily. FMCSA's ELD guidance explains that speed, braking and steering are not required ELD fields. Some fleets use combined systems that collect those details, so it is worth checking what the installed system actually records.
Can a trucking company change a driver's log after a crash?
A carrier can request edits, but only after the driver has submitted the records. Under 49 CFR 395.30(d), the driver must confirm or reject any carrier-proposed change for it to take effect, and the ELD keeps the original record along with the edits.
Does an off-duty log entry prove the driver was rested?
No. An off-duty entry shows time available for rest, not how well the driver slept. Investigators typically compare it with other evidence, such as interviews, phone records and work records, before drawing conclusions about fatigue.
What does a preservation letter do?
A preservation letter asks the record holder to retain specific materials, such as logs, dispatch messages, maintenance files and video. It does not by itself give access to those materials. Getting copies may require later steps, such as discovery, a subpoena, an inspection agreement or a court order.
How long do I have to file a truck accident claim in Texas?
Under Texas Civil Practice and Remedies Code § 16.003, personal injury claims generally must be filed within two years of the injury date. Missing that deadline can limit or eliminate legal remedies.
The opinions on this page are for general information purposes only and do not constitute legal advice on which you should rely.
