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Driver Fatigue and Hours of Service Rules in Truck Accident Claims

Posted
2026-11-05
Last amended
2026-11-05
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@jaidenilwd864
What a Truck Accident Lawyer Checks in a Driver's Logs

When a tractor-trailer crash happens late in a long run, an early question is whether the driver had stayed inside the federal hours-of-service limits. Fatigue rarely leaves skid marks, which is why the answer tends to come from records instead of the road itself. A tractor-trailer crash lawyer looking at one of these claims will usually compare the driver's logs with every other record of the trip.

What the federal hours-of-service rules require

The Federal Motor Carrier Safety Administration (FMCSA) writes the hours-of-service rules in 49 CFR Part 395, one part of the Federal Motor Carrier Safety Regulations found in 49 CFR Parts 390-399. The core limits for property-carrying drivers are simple to state on paper. A driver can drive a maximum of 11 hours after 10 consecutive hours off duty. Driving is not allowed beyond the 14th consecutive hour after coming on duty, and off-duty time does not extend that https://landennncp945.oakmontscope.com/posts/insurance-tactics-after-a-tractor-trailer-crash 14-hour window. A 30-minute break is required after 8 cumulative hours of driving without at least a 30-minute interruption. Across a week, a driver may not drive after 60 hours on duty in 7 consecutive days or 70 hours in 8 consecutive days, although a 34-hour restart begins a new period.

The regulations also include exceptions. Under the sleeper berth provision, a driver can split the 10-hour off-duty period, provided that one period is at least 7 consecutive hours in the sleeper berth and the other is at least 2 hours. Adverse driving conditions can extend the 11-hour and 14-hour limits by up to 2 hours, and the short-haul exception covers drivers who remain inside a 150 air-mile radius and are released within 14 hours. Whether any exception fits is a factual question, and the trucking company usually holds the records that answer it.

How hours-of-service violations come to light

Most drivers required to keep records of duty status now rely on an electronic logging device (ELD) rather than paper logs. The FMCSA explains that an ELD synchronizes with the vehicle engine to record driving time automatically, and Congress mandated the ELD rule as part of MAP-21. An electronic log is harder to falsify than a paper one, yet the log alone is seldom the whole story. Experienced truck crash attorneys treat edits, unassigned driving time and malfunction reports as worth a close look.

A thorough review lines the ELD data up against the supporting documents that 49 CFR 395.11 requires trucking companies to keep, including bills of lading, dispatch records, expense receipts, fleet management messages and payroll records. GPS and telematics data, toll transponder records, scale tickets and data from the engine control module (ECM) can show where the truck really was and when it moved. If those sources disagree with the logs, the gap itself becomes evidence.

Why the trucking company matters

Part 395 places duties on more than the driver. The rules bar a trucking company from requiring or permitting a driver to exceed the limits, and 49 CFR 392.3 bars operating a truck while the driver's alertness is impaired by fatigue, regardless of what the log says. Delivery schedules that cannot be met legally and pay structures that reward speed can support claims against the company itself, including negligent supervision, in addition to vicarious liability for the driver's conduct.

Research cited by the Insurance Institute for Highway Safety (IIHS) found that a truck driver's hours-of-service or logbook violations made it more likely that the driver would be found to have precipitated the crash. A study cannot decide an individual case, but it does explain why a truck crash attorney treats the logs as a priority.

Keeping the records from disappearing

Under 49 CFR 395.8, the minimum retention period for records of duty status and supporting documents is six months. This is one reason an 18-wheeler crash lawyer often sends a preservation letter early, asking the trucking company to keep the ELD data, ECM downloads, dispatch messages and the driver qualification file. The letter does not prove what existed, but it puts the company on notice, and evidence destroyed after notice can lead to spoliation sanctions in many courts.

Filing deadlines and comparative fault

Each state sets its own statute of limitations for injury and wrongful death claims, and the periods vary by state. Most states also use comparative negligence, which can reduce a recovery by the injured person's share of fault. This is general information and not legal advice, and no article can predict the result of a particular claim.

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