Hours of Service (HOS) Violations

What Does It Mean in Truck Accidents?

Truck drivers are subject to strict regulations known as Hours of Service (HOS), established by the Federal Motor Carrier Safety Administration (FMCSA) to prevent driver fatigue and reduce the risk of truck accidents. These regulations dictate the maximum number of hours a truck driver can operate their vehicle before taking mandatory rest breaks. When drivers or their employers violate these rules, the consequences can be devastating for others on the road.

With over 40 years of experience, Board Certified Personal Injury Trial Lawyer, Certified by the Texas Board of Legal Specialization since 1988, David P. Willis, has helped countless clients navigate the complexities of truck accident cases, including those involving HOS violations. If you or a loved one has been injured in a truck accident caused by driver fatigue, speeding, parking on the side of the raod or any other reason, contact Law.net to learn how we can assist.

What Are Hours of Service (HOS)?

HOS regulations are federal rules designed to limit how long a truck driver can operate their vehicle to prevent fatigue-related accidents. These rules apply to commercial drivers operating vehicles that:

Key provisions of the HOS regulations include daily driving limits, mandatory rest periods, and cumulative weekly driving restrictions. Here’s a simplified chart to understand HOS limits:

HOS Rule Description
11-Hour Driving Limit
Drivers can drive for a maximum of 11 hours after 10 consecutive hours off duty.
14-Hour Work Limit
Drivers cannot operate after 14 consecutive hours of on-duty time, including breaks.
30-Minute Rest Break
A mandatory 30-minute rest after 8 hours of driving without a break.
60/70-Hour Weekly Limit
Drivers may not drive after 60 hours in 7 days or 70 hours in 8 days.

These regulations aim to ensure that drivers have adequate rest to operate their vehicles safely. However, violations are alarmingly common, contributing to causes of truck accidents such as driver fatigue and inattention.

How Do Truck Drivers Cheat HOS Regulations?

Despite the strict oversight by the FMCSA, some truck drivers and companies attempt to cheat the system. Traditional paper logbooks, often referred to as “comic books,” can be falsified to show compliance. However, the FMCSA now requires the use of Black Boxes or Electronic Logging Devices (ELDs) for most commercial vehicles, which are harder to manipulate.

Electronic Logging Devices (ELDs) automatically record:

  • Driving hours.
  • Vehicle location via GPS.
  • Rest breaks and off-duty time.

These devices provide an accurate record of a driver’s hours, which can be critical evidence in truck accident cases. Employers and insurers also have access to this data, which can reveal patterns of non-compliance.

Nationwide truck accident lawyers securing crucial date from logbook and black box data for injury lawsuits

Negligent and Dangerous Behavior Linked to HOS Violations

HOS violations not only breach federal regulations but also constitute negligence that can endanger lives. Some truck drivers, aware of their hour limits, park on shoulders of highways rather than finding safer rest areas or truck stops. This behavior increases the likelihood of underride accidents, especially at night and at highway speeds. When drivers fail to deploy proper warning devices like reflectors, safety flashers or flares, the risk to other motorists grows exponentially.

Violating HOS regulations can also lead to:

  • Speeding to meet delivery deadlines.
  • Distracted driving from trying to update routes or schedules via mobile devices while driving.
  • Aggressive or reckless driving behaviors, including improper lane changes and tailgating.


These actions often result in catastrophic accidents, as seen in cases involving speeding truck accidents or illegal parking on shoulder of highways.

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Legal and Financial Consequences of HOS Violations

The FMCSA imposes steep penalties for HOS violations, including:

Fines of up to $16,000 for critical violations.
Suspension or revocation of a driver's Commercial Driver’s License (CDL).
Potential liability in personal injury lawsuits.

When an HOS violation contributes to a crash, the truck driver, their employer, and even dispatchers or brokers can be held accountable. Understanding liability and insurance in a truck accident is essential for victims seeking justice.

Proving HOS Violations in a Truck Accident Case

To establish HOS (Hours of Service) violations as a contributing factor in a truck accident, attorneys rely on thorough investigations and expert analysis. David P. Willis, a Board-Certified Personal Injury Trial Attorney, emphasizes the importance of securing evidence early to ensure that crucial records are not altered or lost.

Essential steps include:

  • Securing ELD Data: These records can directly show whether the driver exceeded allowable driving hours or failed to take required rest breaks.
  • Analyzing Cell Phone Records: This can reveal if the driver was using their phone for calls, texting, or watching videos instead of resting during mandatory breaks.
  • Cross-Referencing Logs with GPS Data: This can expose discrepancies between reported hours and actual driving times, proving logbook falsification.
  • Cross-Referencing Logs with GPS Data: This can expose discrepancies between reported hours and actual driving times, proving logbook falsification.
  • Obtaining Fuel Receipts & Toll Records: Comparing timestamps can contradict driver logs, showing evidence of HOS violations and falsified entries.
  • Interviewing Witnesses & Co-Drivers: Fellow truckers, warehouse staff, or dispatchers can confirm if a driver was pressured to drive beyond legal limits.


HOS violations are a major cause of fatigue-related truck accidents, and proving non-compliance can strengthen a claim against both the driver and the trucking company for negligence.

The Role of an Experienced Truck Accident Lawyer

Cases involving HOS violations often pit victims against large trucking companies and their insurers. These companies have aggressive legal teams whose sole focus is to minimize payouts and deny liability. Victims need a seasoned truck accident attorney with the knowledge, resources, and determination to counter these tactics and fight for maximum compensation. 

David P. Willis, a Board-Certified Personal Injury Trial Lawyer in Texas, has over 40 years of experience handling complex semi-truck accident cases. His Board Certification in Personal Injury Trial Law is a testament to his legal expertise, a distinction held by only 1% of licensed attorneys in Texas are Board Certified in Personal Injury Law. This elite credential proves his in-depth knowledge, courtroom experience, and commitment to achieving justice for accident victims. 

Willis and his team meticulously investigate HOS violations, working to hold all liable parties accountable, including drivers, employers, cargo loaders, and trucking companies. His firm operates on a contingency fee basis, meaning victims pay nothing unless compensation is secured. David P. Willis, a semi-truck accident attorney with over four decades of experience, understands the complexities of these cases. His team works tirelessly to hold all liable parties accountable, including drivers, employers, and brokers. With a contingency fee contract, victims pay nothing unless compensation is secured.

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Semi-truck accident attorneys proving negligence in trucking litigation

The Broader Implications of HOS Compliance

HOS regulations are a cornerstone of trucking safety, designed to protect not only truck drivers but everyone on the road. However, compliance requires more than individual adherence; employers must prioritize safety over profit. Companies that pressure drivers to exceed legal limits or falsify logs are complicit in creating unsafe conditions.

Furthermore, the growing reliance on technology, such as black box data available to prove speeding, has made it easier to uncover violations. These tools, combined with a thorough investigation, provide a strong foundation for personal injury and wrongful death lawsuits.

FAQ After a Truck Accident Involving HOS Violations

1. What is the first step after a truck accident?

The most critical first step after a truck accident involving Hours of Service (HOS) violations is to seek medical attention and ensure that law enforcement creates an official accident report. If possible, gather evidence at the scene, including photos, witness statements, dashcam footage, and the truck’s license plate number. FMCSA regulations require trucking companies to maintain driver logs and electronic logging device (ELD) records for six months, so hiring an experienced truck accident lawyer immediately is crucial to ensure that this evidence is preserved. Your attorney can request black box data, HOS logs, and trucking company compliance records to prove if driver fatigue contributed to the crash.

FMCSA Rules That Apply:

  • 49 CFR § 395.8 – Requires truck drivers to maintain detailed Hours of Service records.
  • 49 CFR § 395.22 – Mandates the use of Electronic Logging Devices (ELDs) to track driving hours.
  • 49 CFR § 390.29 – Requires trucking companies to retain HOS records for a minimum of six months.
2. Can HOS violations increase compensation?

Yes, violations of federal HOS regulations can increase compensation for victims of truck accidents. When a truck driver operates beyond legal limits, the risk of driver fatigue-related crashes increases dramatically. If an investigation proves that the trucker or trucking company ignored FMCSA HOS rules, the victim may be entitled to compensatory and punitive damages.

Compensation can cover:

  • Medical expenses (emergency care, surgeries, rehabilitation).
  • Lost wages and reduced earning capacity if the victim is unable to return to work.
  • Pain and suffering from long-term injuries or emotional trauma.
  • Wrongful death benefits for families who have lost a loved one due to a fatigued truck driver.
  • Punitive damages in cases where the trucking company willfully violated HOS rules or falsified logs.


FMCSA Rules That Apply:

  • 49 CFR § 395.3 – Limits truck drivers to 11 hours of driving within a 14-hour period after 10 consecutive hours off duty.
  • 49 CFR § 395.5 – Limits property-carrying truck drivers to a maximum of 60 hours of driving per 7 days or 70 hours over 8 days.
  • 49 CFR § 395.15 – Prohibits manual log falsification and requires drivers to accurately report hours.
3. Is the employer always liable?

Not always, but trucking companies can often be held liable for HOS violations if they encouraged, ignored, or failed to monitor driver compliance. Many trucking companies pressure drivers to exceed legal driving limits to meet tight delivery schedules, which can lead to accidents caused by fatigued truckers. In some cases, employers falsify logs or fail to properly monitor ELD data to hide violations.

A truck accident lawyer will investigate whether the trucking company:

  • Enforced unrealistic deadlines that required drivers to exceed HOS limits.
  • Falsified driver logbooks to show compliance when rules were actually broken.
  • Failed to implement ELD tracking or monitor driver fatigue.
  • Ignored previous HOS violations and allowed unsafe drivers to remain on the road.


If a trucking company ignored federal regulations, they could face negligence claims and be required to pay significant damages to accident victims.

FMCSA Rules That Apply:

  • 49 CFR § 385.3 – Holds trucking companies responsible for ensuring their drivers comply with HOS regulations.
  • 49 CFR § 395.13 – Allows federal inspectors to place a truck driver out of service if they are caught violating HOS lim

Had the Truck Driver Driven Too Long?
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If you or a loved one has been injured in a truck accident caused by HOS violations, don’t wait to seek legal help. David P. Willis, a Board-Certified Personal Injury Trial Lawyer, has the experience and resources to help you secure justice. With over 40 years of practice, he has a proven track record of holding trucking companies accountable.

Call 1-888-LAW-2040 today for a free consultation or visit Law.net to learn more. Let us fight for the compensation you deserve!