Causes of Truck Accidents

Causes of Truck Accidents

Truck accidents almost never occur “by chance.” The overwhelming majority of truck accidents are caused by something that went wrong and could have been avoided.

Negligence by a truck driver is frequently involved in truck accident cases. However, the driver isn’t always responsible. Another party could be responsible for your crash.

Figuring out why your truck accident occurred is important because it can identify who should be responsible for paying your damages.

It also works to ensure you aren’t held responsible for an accident that wasn’t your fault.

Knowing the cause of a truck accident can help you seek compensation from the correct party. Once you know how the accident occurred, you can take steps to recover the compensation you deserve.

Driver Fatigue

Over time, fatigue decreases focus and impairs judgment. Even momentary lapses in focus caused by drowsiness can be deadly.

In fact, there were at least 283 deaths from drowsy driving accidents in 2023. A 2025 study reports that more than 1 in 5 crash-related fatalities are linked to drowsy driving.

But why do truck drivers push through fatigue?

Some say it’s because they’re working against the clock. Certain commercial drivers are told by their employers to drive longer than they feel comfortable with.

All employers care about is that the freight keeps moving and more money stays in their pockets. They often encourage their drivers to break hours-of-service regulations, putting their drivers’ safety and CDL licenses at risk.

Drivers who face unrealistic schedules are more likely to:

• Speed
• Ignore hours-of-service limits
• Keep driving even when they are tired
• Drive through bad weather conditions
• Believe that safety rules don’t keep the roads safer

Federal limits on driving hours exist to keep the roads safe. But those limits are not always followed. The problem can only be solved if trucking companies commit to drivers’ safety.

Distracted Driving

Driving is a visual task. Even a momentary lapse of concentration can cause an accident.

Common types of distracted truck driving we see include:

• Texting or reading messages
• Talking on the phone (even hands-free) while driving
• Using a GPS or navigation system
• Eating or drinking while driving
• Adjusting music or climate controls
• Reaching for objects inside the vehicle

Research from the Virginia Tech Transportation Institute shows that texting is one of the most dangerous forms of distraction. It carries the highest crash risk among all distractions.

Federal rules reflect that risk. Truck drivers are not allowed to text while driving.

Only hands-free electronic use is allowed. Even then, it must be done safely.

Smartphone use isn’t the only distraction plaguing truck drivers. Eating on the job can increase the risk of a distracted-driving accident.

Long-haul drivers often eat on the road to stay on schedule. It may seem harmless. Practical even.

But studies show that eating and drinking can increase mental workload and lead to more crashes during critical moments.

In a vehicle as large as a commercial truck, each second or reaction time matters. When something happens fast on the road, a distracted truck driver may not react in time.

Driving Under the Influence

Alcohol and drugs can slow reaction time. This makes it harder for a driver to safely control a commercial truck.

A commercial driver cannot operate a truck with an alcohol concentration of 0.04 or higher (49 C.F.R. § 392.5). Federal rules also restrict the use of controlled substances that can affect safe operation.

Trucking companies also have responsibilities related to drug and alcohol testing. That includes:

• Pre-employment testing
• Random testing
• Reasonable suspicion testing
• Post-accident testing
  (49 C.F.R. Part 382).

These rules help, but they do not eliminate the risk. Research on truck crashes found that alcohol-related crashes still occurred even after mandatory breath testing requirements were introduced for commercial truck drivers.

Written policies and testing programs only work when drivers and trucking companies take enforcement seriously.

Speeding and Aggressive Driving

Trucks are larger and heavier than passenger vehicles. So, they need more time and distance to slow down. In fact, Trucks can require up to 40 percent more distance to come to a complete stop than smaller vehicles.

When a truck is traveling too fast, the driver may not be able to stop in time. Even a small increase in speed can make a big difference in stopping distance.

Speeding is often tied to job demands. Research shows that most long-haul drivers report tight or unrealistic delivery schedules.

That pressure can lead to risky decisions behind the wheel. Federal crash data shows that driver behavior is the leading cause of serious truck accidents. Speeding and driving too fast for conditions are among the most common factors. In fact, nearly a quarter of large truck crashes involve excessive speed for the conditions.

Aggressive driving makes the situation worse.

One study found that crashes involving aggressive behavior accounted for a significant share of commercial vehicle accidents and were more likely to result in severe injuries than distraction-related crashes.

That means when a truck driver speeds, follows too closely, or drives aggressively, the consequences are worse.

Those driving behaviors turn routine traffic situations into catastrophic accidents with lifelong impact.

Improper Cargo Loading

Improper cargo causes truck accidents. How a truck is loaded affects how it moves. More importantly, it makes it harder to stop and maneuver quickly in an emergency.

Trucks are harder to control when the load is not properly secured.

Loss of Vehicle Control

Commercial trucks have a high center of gravity. Even small shifts in weight create instability.

Studies show that many rollover crashes occur when drivers fail to adjust their speed to account for the load’s height and weight.

In other words, a truck may be traveling at a speed that would be safe under normal conditions. But, with a heavier or higher load, that same speed can cause the truck to lose stability and tip over.

Drivers must adjust how they drive to match the load they are carrying.

Overloaded trucks strain braking systems and reduce a driver’s reaction window. Crashes involving overloaded trucks are more likely to result in severe injuries or fatalities.

Another issue is improper loading. Improperly loaded cargo shifts during transit.

When cargo shifts, the truck’s center of gravity suddenly changes. That makes the vehicle unpredictable and often impossible to control.

Cargo shift is a recognized factor in serious truck accidents. Once a load moves, the driver may have little ability to regain control of the vehicle.

Rollovers

Improper loading is closely tied to rollover accidents.

Research shows that most rollovers occur in situations where the driver misjudges speed in relation to the truck’s load and center of gravity

Certain driving errors worsen this risk, including:

• Turning too sharply
• Failing to turn enough
• Overcorrecting

Cargo issues often combine with other causes of truck accidents, like:

• Speeding with an overloaded trailer
• Driving through bad weather with an unsecured load
• Ignoring hours-of-service laws while exhausted
• Braking suddenly with improperly balanced cargo
• Making sharp turns with an uneven load
• Failing to inspect cargo before starting a trip

A small mistake becomes much harder to recover from when the truck is unstable.

Jackknife Accidents

A jackknife accident happens when the trailer swings out to the side. This movement creates a sharp angle between the truck and the trailer, like a folding pocket knife.

Improper cargo loading increases the risk of a jackknife accident. When the weight shifts forward and pushes against the cab, the driver can easily lose control of the vehicle.

Jackknife accidents often happen during sudden braking or on slippery roads.

Although jackknife crashes are less common than other types of truck accidents, they still appear in both fatal and injury crashes.  When they do occur, they can block multiple lanes and involve several vehicles at once.

The aftereffect of a jack-knife accident can lead to long traffic delays and more collisions.

Cargo Spills

Improper cargo loading can lead to cargo spills. This happens when freight falls from the truck or leaks onto the road.

These spills can force other drivers to swerve or stop suddenly. This often leads to chain reaction crashes.

The risk becomes more serious when hazardous materials are involved. Federal data shows that thousands of hazardous-material releases occur each year in truck crashes. Many are tied to rollover events.

Liquid cargo presents a unique danger. When tanks are not fully loaded, the contents can shift inside the trailer and destabilize the truck.

Federal safety rules require that leaking vehicles be removed from the roadway, and steps must be taken to stop further leaking.

When cargo spills happen, the roadway itself becomes a hazard. This poses a risk to other drivers’ safety long after the spill.

Who May Be Responsible for Improper Cargo Loading

Improper cargo loading is not always the driver’s fault. Other parties may be responsible for loading the truck.

Cargo-loading companies often handle load placement. They decide how weight is distributed and are responsible for securing the cargo.

If they get it wrong, the truck is unsafe before it even leaves.

Trucking companies must make sure the load is secure. They must require drivers to inspect the cargo before driving.

The risk of an accident increases when these steps are skipped. A poorly loaded truck is harder to control and is more likely to be involved in a serious crash.

Identifying who handled the load is a key part of the case because it helps determine if parties other than the driver should share responsibility for your commercial truck accident.

Poor Maintenance

Federal law requires trucking companies to inspect, repair, and maintain their vehicles. Trucks cannot be operated if they are unsafe.

Here are some common truck maintenance issues we see:

• Brake systems that don’t work or are worn down
• Tires that are worn or otherwise damaged
• Steering systems that make the truck hard to control
• Lights that do not work or reduce visibility
• Worn suspension that impacts stability
• Leaking fluids
• Faulty coupling devices that connect the cab to the trailer
• Broken cargo securement equipment

Federal rules require trucking companies to inspect and maintain their trucks. Some regulations include:

• Trucks must be inspected, repaired, and maintained at all times (49 CFR § 396.3(a))
• Companies must keep records of all inspections, repairs, and maintenance (49 CFR § 396.3(b))
• Unsafe vehicles cannot be operated under any condition (49 CFR § 396.7)
• Drivers must complete a daily inspection and report any safety issues (49 CFR § 396.11)
• Companies must fix safety defects before the truck is driven again (49 CFR § 396.11)
• Vehicles must undergo a full inspection at least once every year (49 CFR § 396.17)
• Roadside inspection violations must be corrected within 15 days (49 CFR § 396.9)

Most truck accidents caused by maintenance problems are preventable.

But why do some trucking companies still cut corners?

Repairs cost money. Taking a truck off the road can affect profits.

Some companies put their employees’ safety on the line to protect their own bottom line. But it’s not just their employees that they are putting at risk. It’s everyone on the road.

That’s why it’s important to identify if vehicle maintenance caused your truck accident. If it did, the trucking company could be held liable for damages under the law.

Negligent Hiring and Supervision

Negligent Hiring

Trucking companies are responsible for the drivers they put on the road. That responsibility starts during the hiring process.

There are strict requirements for who can operate a commercial truck under 49 C.F.R. § 391.11. Drivers must be qualified, properly licensed, and able to operate a vehicle safely.

Companies must review the driver’s prior employment, safety history, and driving records (49 C.F.R. § 391.23).

Once a truck driver is hired, the company’s obligations don’t end. The company must maintain a driver qualification file with this information (49 C.F.R. § 391.51). They must also review driving records each year to ensure the driver remains qualified (49 C.F.R. § 391.25).

Common violations of federal driver qualification requirements include:

• Driving without a valid commercial license (49 C.F.R. § 391.11)
• Driving without proper endorsements for the vehicle (49 C.F.R. § 383.93)
• Operating a truck without a valid medical certificate (49 C.F.R. § 391.41)
• Using an expired medical certificate (49 C.F.R. § 391.45)
• Driving while disqualified or suspended (49 C.F.R. § 391.15)

Special Endorsements

Some commercial vehicles require special endorsements. These are extra qualifications a driver must have to operate certain types of trucks. These include:

• tank vehicles
• hazardous materials
• multi-trailer combinations

Drivers must pass additional tests before operating these vehicles (49 C.F.R. § 383.93).

Hazardous material transport requires even stricter approval. Drivers must be cleared by state agencies before receiving this endorsement (49 C.F.R. § 383.141).

Negligent Supervision

After hiring, trucking companies must properly supervise their drivers. That duty continues for as long as the driver is working for the company.

Federal law requires companies to implement drug and alcohol testing programs to protect public safety (49 C.F.R. § 382.601). Companies must provide written policies and educational materials to every driver.

Supervisors must also be trained to recognize signs of drug and alcohol use (49 C.F.R. § 382.603). This training is required so companies can identify unsafe drivers before a crash occurs.

These systems break down without proper supervision.

Drivers may remain on the road even when they pose a clear risk.

Common examples of negligent supervision include:

• Failing to review a driver’s safety history
• Ignoring past accidents or violations
• Failing to train drivers properly
• Allowing unsafe drivers to remain on the road
• Ignoring signs of drug or alcohol use
• Failing to monitor driver performance
• Ignoring complaints about dangerous driving
• Encouraging drivers to meet unrealistic deadlines

In many cases, these issues are uncovered during an investigation.

How the Cause of a Truck Accident Affects Your Case

The cause of a truck accident shapes your entire case. It affects who is responsible and how much you can recover for your damages.

At the center of every case is negligence. Negligence means someone failed to act with reasonable care. In truck accident cases, that failure can take many forms.

To recover compensation, you must show that someone’s negligence caused your injuries. That is why identifying the cause of the crash is so important.

Different states handle fault in different ways. Many states use a system called comparative negligence. Under this system, fault can be shared between multiple parties.

Texas is one example. Under Texas law, you can recover damages only if you are not more than 50 percent at fault (Tex. Civ. Prac. & Rem. Code § 33.001). If you are partly at fault, your recovery is reduced by your percentage of fault.

Trucking companies and insurance carriers will try to shift blame to lower their percentage of fault. In some cases, they may try to place fault on you. If the cause of the crash is not clearly established, it becomes easier for them to do this.

That is why acting quickly matters. Evidence from truck accident cases can disappear in days. The sooner the cause is investigated, the stronger your position becomes.

Insurance companies will start building their defense right away because they know how much money is at stake in a commercial truck accident. They want to minimize your payout, and they start with a swift investigation.

That’s why you need to act fast, too. Understanding the cause of the crash protects your claim and holds the right parties responsible.

Speak With a Truck Accident Attorney

Truck accident cases are different from standard car accidents because there’s more at stake. You don’t want to leave your case to a generalist attorney, or even worse, try to handle it yourself.

Don’t wait to understand your options after a truck accident. Start building your claim right away and speak to an attorney as soon as possible. The sooner your case is reviewed, the better your chances of preserving evidence are.

An attorney can investigate the cause of the crash and identify who is responsible. More importantly, they’ll deal with the insurance companies so you don’t have to.

Insurance carriers move quickly in these cases to limit their payouts. You should have someone on your side who is moving just as fast to protect your rights.

America’s Truck Accident Network connects injured victims with the right attorney for their case. We will match you with a lawyer who understands truck accident claims and the issues involved with proving who caused the accident.

If you have questions about your case, don’t wait to get answers. A consultation with a truck accident attorney will let you know what steps to take next.

Get connected with a truck accident attorney today.