Fatigue slows reaction time, dulls judgment, and can cause a driver to drift out of a lane or miss slowing traffic ahead. Behind the wheel of a fully loaded tractor-trailer, those lapses can be catastrophic. That’s why federal hours-of-service rules limit how long commercial truck drivers can drive and work before they must rest. When a driver or carrier ignores those limits, or a driver gets behind the wheel too tired to drive safely, the people sharing the road pay the price.
Freeburn Law represents people injured in truck driver fatigue accidents in Pennsylvania, along with families who have lost a loved one in a commercial truck crash. We investigate driver logs, carrier records, and crash evidence to determine whether fatigue played a role.
Contact Freeburn Law at (717) 777-7777 for a free case review.
Why Fatigue Is Especially Dangerous in a Commercial Truck
A loaded tractor-trailer can weigh up to 80,000 pounds and needs far more distance to stop than a passenger car. A fatigued driver who reacts even a second or two late may have no realistic chance of stopping before reaching slowed or stopped traffic. Drowsiness can also cause gradual lane drift, wide turns, and delayed responses to merging vehicles.
One of the most serious risks is a microsleep, a brief lapse lasting a few seconds in which a driver loses awareness without realizing it. At highway speed, a truck can travel the length of a football field in that time. Long-haul schedules, overnight driving, and irregular sleep can all contribute, particularly on long stretches of Pennsylvania’s interstates and the Turnpike.
What Federal Hours-of-Service Rules Require
The Federal Motor Carrier Safety Administration sets the hours-of-service rules for commercial drivers in 49 CFR Part 395. According to the FMCSA hours-of-service summary, the core limits for property-carrying drivers include:
- 11-hour driving limit: A driver may drive up to 11 hours after 10 consecutive hours off duty.
- 14-hour window: A driver may not drive past the 14th consecutive hour after coming on duty, and off-duty breaks don’t extend that window.
- 30-minute break: A driver must take a 30-minute break after 8 cumulative hours of driving without one.
- 60/70-hour limit: A driver may not drive after 60 hours on duty in 7 consecutive days or 70 hours in 8 days, though a 34-hour off-duty period can restart that count.
Exceptions exist. Drivers may extend the driving limit and window by up to two hours in adverse driving conditions, may split their off-duty time using sleeper berth provisions, and some short-haul drivers are exempt from certain logging requirements. Whether an exception applied is often a key question in a fatigue investigation.
Hours-of-Service Compliance Does Not Eliminate Every Fatigue Risk
Logs that appear compliant don’t prove a driver was rested. A driver may have spent off-duty hours working another job, caring for family, or sleeping poorly in a noisy truck stop. Illness, medications, and untreated sleep disorders such as obstructive sleep apnea can also leave a driver dangerously tired. Federal rules separately prohibit driving while a driver’s ability or alertness is impaired by fatigue or illness, which means a driver can be in violation even when the hour totals look fine.
Electronic Logs Can Show More Than Total Driving Time
Most commercial drivers must use electronic logging devices (ELDs), which automatically record driving time based on the truck’s engine and movement. ELD data can show when the driver went on and off duty, how long each driving period lasted, where the truck was at different times, and whether breaks were taken. It also tracks edits, so changes to a driver’s records after the fact may leave a trail.
Carriers must keep these records, along with supporting documents, for six months. Video and some electronic data may be overwritten much sooner, which is why prompt preservation matters.
Compare Logs With Dispatch, Fuel, Toll, and Delivery Records
ELD data is most revealing when compared with other records. Dispatch messages show what the carrier told the driver and when. Fuel receipts, toll records, GPS data, and bills of lading place the truck at specific locations and times. If a driver logged off duty at one location but a fuel receipt shows a purchase hundreds of miles away, the inconsistency matters.
Delivery appointment times can also reveal whether the schedule was realistic within legal limits or whether the carrier was pushing the driver to keep moving.
The Trucking Company’s Policies May Matter
Fatigue is not always the driver’s failure alone. Federal rules also prohibit carriers from requiring or permitting drivers to violate hours-of-service limits or drive while impaired by fatigue. Investigators may look at how the company scheduled routes, whether delivery windows made compliance unrealistic, how drivers were paid, and whether supervisors monitored logs. A carrier that ignored repeated violations, failed to train drivers on fatigue, or overlooked a driver’s known sleep disorder may share responsibility for the crash.
Our page on Pennsylvania truck accident attorneys explains how carrier liability is evaluated.
Evidence of Fatigue at the Scene
Fatigue often has to be shown through a combination of evidence. Witnesses may have seen the truck drifting, braking erratically, or failing to slow. Forward-facing and driver-facing dashcam footage may show a driver’s eyes closing or head nodding. Police bodycam video and the driver’s own statements, such as admitting to being tired or driving through the night, can be important. Phone records may show activity that conflicts with claimed rest periods. The truck’s engine data and any lane-departure warning alerts can show steering and braking in the moments before impact, and crash reconstruction can reveal whether the driver braked late or not at all.
A Rule Violation Is Evidence, Not an Automatic Win
An hours-of-service violation can be powerful evidence, but it doesn’t automatically establish liability. A Pennsylvania injury claim still requires proof that the driver or carrier owed a duty of care, breached it, and caused the crash and the resulting injuries. The defense may argue the violation had nothing to do with the collision, or that another driver was at fault.
Under Pennsylvania’s comparative negligence law, an injured person can still recover as long as their own fault isn’t greater than that of the defendants, with damages reduced by their share. Building the connection between fatigue and the crash takes careful analysis of the records and the physical evidence.
Preserve Trucking Records Quickly After a Crash
Trucking companies control most of the evidence that proves fatigue, and much of it isn’t kept forever. Hours-of-service records must generally be retained for six months, but dashcam footage may be overwritten in days, and engine data can be lost once a truck is repaired or returned to service.
A preservation letter sent promptly to the carrier and its insurer identifies the specific records that must be saved, including ELD data, dispatch communications, driver qualification files, and video. Acting quickly also helps protect your claim within Pennsylvania’s general two-year deadline for personal injury lawsuits.
Contact Freeburn Law After a Fatigue-Related Truck Crash
At Freeburn Law, we start by listening to what happened, then build a strategy around the evidence. In fatigue cases, that means sending preservation demands quickly, obtaining ELD and supporting records, comparing logs with dispatch and fuel data, and working with experts to connect the driver’s condition to the crash. Our attorneys have handled serious commercial truck cases, including a $1.8 million settlement for a family whose daughter was killed when a commercial truck struck debris on the Pennsylvania Turnpike and sent it into her car.
We represent truck crash victims throughout the state, including through our Pittsburgh truck accident attorneys, and there is never a fee unless we recover money for you. You can see if you have a case or learn about personal injury claims we handle.
Contact Freeburn Law at (717) 777-7777 for a free case review.
Frequently Asked Questions
How many hours can a truck driver legally drive in one day?
Under federal rules, a property-carrying driver may drive up to 11 hours after 10 consecutive hours off duty, and only within a 14-hour window after coming on duty. Exceptions, such as adverse driving conditions and certain short-haul operations, can change the analysis.
Can ELD data prove a truck driver was fatigued?
ELD data can show how long a driver was on duty and driving, when breaks occurred, and whether records were edited. It doesn’t directly measure how tired the driver was, so proving fatigue usually also requires witness accounts, video, the driver’s statements, sleep history, and crash reconstruction.
What if the driver’s log shows no hours-of-service violation?
A clean log doesn’t end the inquiry. Logs can be inaccurate, and a driver can still be too fatigued to drive safely because of poor sleep, illness, or other work. Dispatch records, receipts, phone data, and scene evidence may still show that fatigue contributed to the crash.
