Truck accidents · Subcategory
Fatigued Driver / Hours-of-Service Violations
Fatigued-driving truck crashes are commercial-vehicle collisions where the driver was operating outside the bounds of safe alertness, usually because they pushed past, or were dispatched past, the federal hours-of-service limits in 49 CFR Part 395. Since the federal electronic-logging-device (ELD) mandate took full effect in December 2019, hours violations are no longer hidden in paper logbooks; they are encoded in tamper-resistant electronic records that survive far longer than the carrier would prefer in litigation. Reading those records correctly is the difference between a fatigue case that proves itself and one that collapses on a sleep-disorder defense.
The hours-of-service framework
49 CFR Part 395 sets the rules. For property-carrying drivers: an 11-hour driving limit within a 14-hour duty window after 10 consecutive hours off duty; a 30-minute break required after 8 hours of driving; a 60-hour limit over 7 days or 70-hour limit over 8 days; and a 34-hour restart provision. Passenger-carrying drivers have slightly different limits under § 395.5. Adverse-driving and short-haul exceptions exist under § 395.1. Each rule has a specific trigger, a specific tolerance, and a specific way that violations show up in the ELD log. A demand letter that says 'the driver was tired' without anchoring the claim in a specific Part 395 violation is a demand the carrier ignores.
Reading the ELD data: what the records actually show
An ELD records four duty statuses (off-duty, sleeper berth, driving, on-duty-not-driving) and writes a timestamp every time the status changes. The raw ELD record includes the driver's status changes, GPS location, vehicle speed, and engine activation/deactivation events. Forensic analysis compares the recorded duty status against vehicle motion (a driver logged 'off duty' while the engine is running and the truck is moving is a § 395.8 violation), against shipper bill-of-lading times, against dispatch records, and against fuel-purchase receipts. The patterns of violation that emerge — habitual late-night driving past the 14-hour window, repeated 30-minute breaks logged while still driving, restart shortcuts — establish more than a single bad day. They establish a system.
The records the carrier must keep and the deadlines that matter
Under 49 CFR § 395.8(k), motor carriers must retain ELD records for six months. Supporting documents — bills of lading, fuel receipts, dispatch records, payroll records, weight tickets — must be retained for the same period under § 395.11. After six months, those records can lawfully be destroyed. In a fatigue case, the preservation letter must go out before that window closes, and it must specifically name ELD raw data, ELD edit history, dispatch records, supporting documents, and the carrier's automated driver-vehicle inspection report records. Carriers who edit ELD records after the fact (the system retains an edit trail that records exactly what was changed and when) have a serious problem on cross-examination.
Sleep-disorder defenses and the medical record
Common defense theories in fatigue cases include undiagnosed sleep apnea (the driver was 'tired but not in violation'), prescription-medication interactions, and 'sudden onset' fatigue. These defenses are largely controllable through the driver-qualification-file and DOT medical examination records. FMCSA medical examiners are required under 49 CFR § 391.43 to screen for sleep disorders during the DOT physical; carriers are required to act on positive screens. A driver with a documented sleep-apnea risk who was cleared without a sleep study, and who then crashed in a fatigue pattern, generates a record that supports both vicarious and direct-negligence claims against the carrier.
Frequently asked
Questions Texas accident victims ask us
- For property-carrying drivers under 49 CFR Part 395: an 11-hour driving limit within a 14-hour duty window, after 10 consecutive hours off duty; a 30-minute break required after 8 cumulative hours of driving; a 60-hour-in-7-day or 70-hour-in-8-day on-duty maximum; and a 34-hour restart provision. Passenger-carrying drivers have somewhat different limits. Specific exceptions exist for adverse driving conditions, short-haul operations, and oilfield service. The rules are stricter than most non-trucking people realize and looser in some respects than safety advocates want.
- An electronic logging device automatically records a commercial driver's duty status (off-duty, sleeper-berth, driving, on-duty-not-driving) based on engine activity, GPS, and driver input. The federal ELD mandate, fully effective since December 2019, replaced paper logbooks for most commercial drivers. ELDs are tamper-resistant: every edit leaves an audit trail showing exactly what was changed, by whom, and when. In a fatigue case, ELD data is the single strongest piece of evidence, provided it is preserved before the six-month retention window expires.
- ELD records and supporting documents (bills of lading, dispatch records, fuel receipts) must be retained by motor carriers for six months under 49 CFR § 395.8(k) and § 395.11. After six months, the carrier can lawfully destroy them. In a serious crash case, a preservation letter must go out in the first weeks, not the first months, and it must specifically name the ELD raw data, ELD edit history, dispatch records, payroll records, weight tickets, and supporting documents. Without preservation, the carrier's six-month timer runs without legal consequence.
- Through the data trail. ELD records show what duty status was logged and what the GPS and engine actually were doing; a status mismatch is a federal violation. Dispatch records show the schedule the driver was assigned. Supporting documents (fuel receipts, weight tickets, bills of lading with appointment times) anchor what was actually happening on the road. The pattern of the crash itself — single-vehicle drift-off-roadway, no skid marks, no evasive action — fits the fatigue profile. Defense theories (sleep apnea, prescription medication) have their own document trails in the driver-qualification file.
- Almost always, yes. Federal regulations under 49 CFR § 395.8(a)(1) make the motor carrier responsible for ensuring the accuracy of driver logs. A carrier that received supporting documents inconsistent with logged hours, or that received automated ELD edit-trail data showing patterns of edits, was on notice. Direct-negligence claims against the carrier for negligent supervision, training, and retention typically survive even when the carrier argues the driver acted alone. The 'rogue driver' defense rarely succeeds with a real document trail.
- The 34-hour restart provision under 49 CFR § 395.3 allows a property-carrying driver to reset their 60/70-hour weekly cycle after taking 34 consecutive hours off duty. It is a powerful tool for legitimate scheduling, but it is also a frequent point of dispute. Carriers and drivers sometimes log 34-hour restarts that GPS and ELD data show were not actually 34 consecutive hours off duty, a 'paper restart' that lets the driver continue working past the weekly limit. The pattern shows up when the restart-claim period overlaps with engine-on or vehicle-motion data.
- Yes. The adverse-driving-conditions exception under § 395.1(b) allows up to two extra hours of driving in the 14-hour window when unexpected weather or traffic conditions arise. The short-haul exception under § 395.1(e) exempts drivers operating within a 150-air-mile radius who return to the work-reporting location daily. The oilfield exception under § 395.1(d) applies to specifically-constructed oilfield service vehicles. Each exception is narrow, each has a specific trigger, and carriers regularly overclaim them in litigation.
- Sometimes. Texas law and federal regulation under 49 CFR § 392.6 prohibit anyone from requiring or permitting a driver to operate in violation of the hours rules. A shipper or receiver whose appointment windows or detention practices effectively forced a driver past the limits can be pleaded into the case under negligent-scheduling and right-to-control theories. The bills of lading, the appointment confirmations, and the detention-time records build that case. Shipper liability is not automatic, but it is more available than the freight industry tends to admit.
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