An electronic logging device can help establish which driver and truck were associated with a work record, when driving was recorded, and how that record changed. It does not automatically reconstruct the collision. Before relying on an ELD file in a Louisiana truck claim, identify the system, the period covered, and whether the production includes the underlying events or only a daily graph.
The distinction is especially important when someone says a log proves the truck’s speed at impact. Federal ELD requirements concern hours-of-service records. Other equipment may supply speed or braking evidence, but that data must be identified and evaluated separately.
What the required fields can establish
49 C.F.R. section 395.26 specifies automatic recording of date, time, location information, engine hours, vehicle miles, and identification data for the driver or authenticated user, vehicle, and carrier. It also identifies the events at which those elements are recorded.
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| Record | Useful question | Limit to check |
|---|---|---|
| Driver and vehicle identifiers | Does this file concern the driver and tractor involved? | Account assignments, team driving, and unidentified operation may need explanation. |
| Duty-status events | When was driving, other work, or time off recorded? | The final graph may not show the original event, correction, and annotation together. |
| Location entries | Is the recorded trip consistent with the route and other records? | Required location entries are not a continuous, street-address-level trace. |
| Engine hours and miles | Does vehicle activity fit the proposed timeline? | Totals do not supply a second-by-second account of the impact. |
| Diagnostics and malfunctions | Was a recording problem identified during the relevant period? | A flagged problem needs technical explanation; it is not proof that the entire file is false. |
FMCSA’s ELD Functions guidance explains that location is recorded at specified events and 60-minute intervals while moving. Ordinary on-duty driving location is approximately within a one-mile radius; personal-use reporting is less precise. The required ELD record does not include speed, braking, steering, or other vehicle-performance measurements.
Some fleet products combine ELD functions with additional tracking or camera services. Ask which feature produced a particular measurement.
An electronic record can be corrected
Calling ELD records immutable is misleading. Under section 395.30, drivers must review, correct, and certify their records. Changes require annotations, and carrier-proposed edits require driver confirmation or rejection and the appropriate recertification. The regulation prohibits alteration or erasure of the original hours information and source data.
A useful production therefore includes original events, edit history, explanations, and certifications. An edit can correct a genuine mistake. Its existence alone does not establish falsification, just as a polished daily summary does not establish that every underlying entry is accurate.
Section 395.32 separately addresses driving recorded when no driver is logged in. The carrier must review unidentified driving and either explain why it remains unassigned or assign it to the appropriate driver. If that time overlaps the trip in question, investigate who operated the truck and what the supporting records show.
Large commercial delivery trucks navigate hazardous road conditions during heavy fog and rain with headlights illuminated.
An hours violation and crash causation are different findings
For property-carrying operations governed by the general limits in section 395.3, analysis ordinarily begins with 10 consecutive hours off duty, an 11-hour driving limit within a 14-hour window, and a qualifying 30-minute interruption after eight cumulative driving hours. The regulation also limits driving after 60 or 70 on-duty hours in seven or eight days, depending on the operation.
Those calculations require the applicable exceptions and earlier work history. For example, a qualifying split-sleeper arrangement affects the 14-hour calculation, and the driving-break rule has short-haul exceptions. FMCSA’s summary is a starting point, not a substitute for checking the operation and rule.
ELD use itself is not universal. Section 395.8 contains specified exceptions, including certain limited record-of-duty-status use and older vehicles. Establish which requirements applied before treating the absence of an ELD as a violation.
A log does not measure sleep quality or alertness. Even a supported hours violation must be connected to the collision rather than assumed to have caused it. The separate article on ELD records and driver fatigue addresses that inquiry in more detail.
Preserve the file and its context
There is no universal 24-to-72-hour ELD expiration period. Section 395.8(k) requires retention of duty-status records and required supporting documents for at least six months from receipt. Section 395.22(i) requires a six-month backup on a separate device. Section 395.32 also requires retention of unidentified-driving records for at least six months from receipt.
Act promptly despite those minimums. Related camera, ECM, or fleet-platform records may follow different retention practices. A preservation request should identify the carrier, driver, vehicle, crash, relevant earlier work period, and requested records. It should address the export, original event history, edits, annotations, certifications, unidentified driving, and the information needed to interpret timestamps and fields.
Keep the original time values. Section 395.8 uses the driver’s home-terminal time standard for duty-status records; a camera or receipt may use another time basis. Document conversions rather than silently changing the source data. Preserve the original export as well as any readable report prepared from it.
Use the record to test a specific account
The useful question is whether a particular part of the account fits the records. Compare a disputed driving interval with vehicle identity, toll or fuel records, dispatch communications, and available video. Explain discrepancies before attributing them to dishonesty. A gap in one production may require further requests.
Electronic evidence does not override Louisiana’s fault rules. The current Civil Code article 2323 bars recovery at 51% or more claimant negligence and reduces damages below that threshold, with a separate intentional-tort qualification. The amendment took effect January 1, 2026; earlier causes of action require the prior-law analysis. The records help evaluate disputed facts within the applicable law.
The firm’s Baton Rouge truck accident practice can identify which electronic sources matter to the collision and coordinate preservation and analysis. A carrier name, truck number, crash location, and approximate time can help locate the relevant trip even before the complete file is available.
Sources checked: September 29, 2026. Last reviewed: September 28, 2026.