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Understanding fatigue, liability, and your rights.

Driver fatigue is one of the leading causes of tractor-trailer crashes in Vermont and New Hampshire. It slows reaction time, affects judgment, and increases the risk of serious collisions. This article explains how fatigue impairs drivers, what federal rules apply, and what evidence matters if a crash occurs.

How Does Driver Fatigue Affect Truck Drivers?

Driver fatigue affects truck drivers by slowing reaction time, reducing awareness, and impairing judgment. These changes make it harder to respond to road conditions and increase the risk of a crash, especially when operating a large commercial vehicle.

Truck drivers face a higher risk of fatigue because of long hours, night driving, and delivery schedules. Many drivers work irregular shifts that disrupt normal sleep patterns.

Pressure to meet deadlines can also lead drivers to reduce rest time. When rest is limited, fatigue builds over time. This increases the risk of slower reactions, poor decisions, and loss of control on the road.

How the Brain Slows Down Under Fatigue

Fatigue slows how the brain processes information. A tired driver may take longer to recognize hazards, judge speed, or decide when to brake.

At highway speed, one extra second of reaction time can mean the truck travels the length of several cars before the driver responds.

Fatigue also affects focus. Drivers may miss changes in traffic or fail to notice hazards until it is too late. This delay can turn a manageable situation into a serious truck accident.

What Is Microsleep and Why Does It Matter?

In more severe cases, fatigue can lead to microsleep. This is a brief, uncontrolled sleep that lasts a few seconds. The driver may not realize it happened.

At highway speed, even a few seconds without attention can be dangerous. A truck can travel hundreds of feet during that time, often drifting across lanes or missing a curve.

Because of the size and weight of a tractor-trailer, these events often lead to severe collisions.

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What Federal Rules Limit How Long a Truck Driver Can Drive?

Federal rules limit how long a truck driver can work to reduce fatigue-related crashes. These rules set clear limits on driving time and require rest periods. The Federal Motor Carrier Safety Administration (FMCSA) sets hours-of-service (HOS) rules for truck drivers. These rules cap how long a driver can be on the road before they must stop and rest.

The 11-Hour and 14-Hour Rules

Under current FMCSA rules, a driver may drive no more than 11 hours after 10 straight hours off duty. All driving must also be done within a 14-hour window after coming on duty.

Once that 14-hour window closes, the driver must stop, even if they haven’t used all 11 drive hours. This rule exists to prevent long shifts that wear a driver down over the course of a day.

How Electronic Logging Devices Track Driver Hours

Since 2017, most trucks must use an electronic logging device (ELD). An ELD records drive time automatically and links directly to the truck’s engine.

ELDs make it harder to falsify logs, which was a known problem with paper records. If a crash happens, ELD data can show exactly how long the driver was on the road and whether they broke the rules. That data is one of the first things a truck accident attorney will try to preserve.

What Evidence Shows a Truck Driver Was Fatigued at the Time of a Crash?

Proving fatigue requires real evidence, not just a guess. Several types of records can show how long a driver was awake, whether HOS rules were broken, and what the driver’s behavior looked like in the moments before the crash.

ELD Data and Driver Logs

ELD records and paper logs show when the driver was moving and for how long. If the data shows the driver exceeded HOS limits, that’s direct evidence of a rule violation.

Attorneys can request this data after a crash. Federal rules require carriers to keep ELD records for at least six months, so acting quickly is important. Records can be deleted or written over after that window closes.

Witness Accounts and Camera Footage

Other drivers on the road may have seen the truck drifting, running wide on a curve, or moving in an unsteady way before the crash. These accounts matter.

Dash camera footage from the truck or nearby vehicles can show lane drift, delayed braking, or sudden moves. This kind of visual evidence makes it much easier to show what the driver was doing before impact.

Dispatch Records and Work Schedules

A driver’s schedule tells a lot about whether fatigue was likely. If dispatch records show the driver was pushed to meet a tight deadline, that pressure may have led to skipped rest.

Carrier records, trip logs, and any messages between the driver and dispatch can all be part of a crash review. If a company set a schedule that made proper rest impossible, that may be evidence of negligence on the carrier’s part, not just the driver’s.

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What Should You Do If Fatigue May Have Caused a Truck Crash?

Fatigue-related truck crashes often involve more than just the driver, and the records that explain what happened can be lost if no one acts quickly. 

Knowing which documents matter and how they are used can help you better understand the situation and what may come next.

Speaking with a truck accident lawyer familiar with Vermont and New Hampshire law can help you understand how fatigue is evaluated and what evidence may be available. Sabbeth Law handles these cases and can walk you through the process.

FAQs

Can a truck driver be held liable if they drove while fatigued?

Yes. A truck driver who drove while fatigued and caused a crash may be liable for negligence. If they skipped required rest breaks or falsified their logs, those facts support the claim. The trucking company may also share liability if it pushed drivers to meet schedules that made proper rest impossible.

How do I know if fatigue caused a tractor-trailer crash?

ELD data, HOS records, and cell phone records can show how long a driver was awake. Witness reports of drifting or no braking before impact also point to drowsy driving. An attorney familiar with truck crash cases can help gather and preserve this evidence before it’s gone.

Do federal HOS rules apply to crashes in Vermont and New Hampshire?

Yes. FMCSA hours-of-service rules apply to all commercial trucks in every state, including Vermont and New Hampshire. A violation of these rules at the time of a crash is key evidence of negligence. State law may add further duties for carriers operating in these areas.

What is an ELD and why does it matter after a crash?

An ELD records a truck’s drive time automatically and cannot easily be altered. In a fatigue case, ELD data shows whether the driver broke federal rest rules. Carriers must keep this data for at least six months, so requesting it quickly after a crash is important.

Can the trucking company be responsible, not just the driver?

Yes. If a company sets schedules that make proper rest impossible, ignores known rest violations, or fails to track driver hours, it may share responsibility for the crash. Courts can hold companies liable for creating the conditions that led to a fatigued driver being on the road.

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