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A collision involving a jackknifed truck is one of the most dangerous types of crashes on Washington roads. When a tractor-trailer folds at its hitch point and the trailer swings toward the cab, the truck can sweep across multiple lanes of traffic, crush smaller vehicles, and trigger chain-reaction collisions.

For drivers in Tacoma, the risk is not hypothetical. Commercial trucks travel daily between the Port of Tacoma, Interstate 5, State Route 16, Interstate 705, and State Route 167. These heavily traveled freight corridors see constant movement of cargo throughout the Pacific Northwest. When a truck driver loses control of a trailer in these areas, the consequences can be devastating.

If you were injured in a jackknife truck accident, understanding what caused the accident and what legal options may be available can help you take the next step toward recovery. Because trucking companies and insurers often begin investigating immediately after a serious crash, having experienced legal guidance early can help protect critical evidence and your ability to pursue compensation.

Contact us today at 503-222-6333 to discuss your case and learn how we can help you. 

What Is a Jackknife Truck Accident?

Understanding the jackknife truck’s meaning starts with the relationship between the tractor and trailer. A jackknife accident occurs when the trailer swings outward and forms an angle with the cab that resembles a folding pocketknife. Instead of remaining aligned behind the tractor, the trailer pivots sideways, often crossing multiple lanes of traffic.

A jackknife semi truck may block an entire highway in seconds, leaving nearby drivers with little opportunity to avoid a collision. These accidents frequently involve multiple vehicles and often result in catastrophic injuries because of the size and weight of commercial trucks.

Why Does Tacoma See Serious Truck Accidents?

Tacoma serves as one of Washington’s most important freight hubs. The Port of Tacoma is among the busiest container ports in North America, generating substantial commercial truck traffic throughout Pierce County. Truck drivers routinely navigate:

  • Interstate 5 through Tacoma,
  • State Route 16 and the Tacoma Narrows corridor,
  • Interstate 705,
  • State Route 167, and 
  • Port access roads and industrial freight routes.

Western Washington weather creates additional challenges. Heavy rain, standing water, fog, and reduced visibility can make it more difficult for truck drivers to maintain control during braking or emergency maneuvers. A truck traveling too fast for conditions may lose traction, causing the trailer to swing uncontrollably across the roadway.

What Are Common Causes of Jackknife Semi Truck Accidents?

Many jackknife accidents are preventable. Some of the most common causes include the following.

Driver Error

Truck drivers must carefully manage braking, speed, and steering. Sudden braking, excessive speed, distracted driving, fatigue, following too closely, and improper responses to road conditions can all contribute to jackknifing.

Violations of Federal Trucking Regulations

Commercial carriers must comply with regulations established by the Federal Motor Carrier Safety Administration (FMCSA). These rules govern driver qualifications, hours of service, vehicle inspections, maintenance requirements, and cargo securement. When a trucking company cuts corners to increase profits, safety often suffers.

Improperly Loaded Cargo

Uneven weight distribution or unsecured cargo can cause a trailer to shift unexpectedly. Once the load moves, the driver may struggle to maintain control of the vehicle.

Mechanical Failures

Brake defects, worn tires, steering issues, and other maintenance problems can contribute to a loss of control. Trucking companies have a legal responsibility to inspect and maintain their vehicles before placing them on the road.

What Types of Evidence Are Important for a Jackknife Truck Case?

Unlike a typical car accident, a truck accident investigation involves extensive evidence that may disappear quickly if it is not preserved. Critical evidence often includes:

  • Electronic Control Module (ECM) data,
  • Event Data Recorder information,
  • Driver logbooks,
  • Hours-of-service records,
  • Driver qualification files,
  • Maintenance and inspection records,
  • Cargo loading documentation,
  • Dash camera footage, and
  • Cell phone records.

One reason trucking companies often dispatch investigators immediately after a serious crash is that they understand the importance of preserving evidence. An experienced truck jackknife accident lawyer can send preservation notices and begin investigating before key evidence is altered, lost, or destroyed.

How Is Liability Determined After a Jackknife Accident?

Many accident victims assume the truck driver is the only potentially responsible party. In reality, multiple parties may share liability. Potential defendants may include:

  • The truck driver,
  • The trucking company,
  • A maintenance provider,
  • A cargo loading company,
  • A truck manufacturer, and 
  • A parts manufacturer.

Washington follows a pure comparative fault system. Even if an injured person is partially responsible for an accident, they may still recover damages, although their percentage of fault may reduce their compensation.

Because commercial trucking companies often carry substantial insurance policies, insurers frequently begin building defenses immediately after a crash and may attempt to shift blame. Having legal representation early can help level the playing field.

Why Is Board Certification Important for a Truck Jacknife Accident Lawyer?

Many attorneys advertise truck accident services. Far fewer have dedicated their careers to trucking litigation.  When evaluating a jackknife truck accident attorney, accident victims should consider whether the lawyer holds board certification in truck accident law through the Academy of Truck Accident Attorneys and the National Board of Trial Advocacy.

This certification requires extensive experience in trucking litigation, peer review, continuing legal education, and successful completion of a comprehensive examination focused specifically on commercial truck accident law.

Tom D’Amore has earned board certification in truck accident law, a distinction held by only a limited number of attorneys nationwide. This specialized credential reflects a commitment to understanding the federal regulations, industry practices, and complex liability issues that often arise in serious trucking cases.

Why Clients Turn to D’Amore Law Group

Truck accident cases are not simply larger car accident claims. They often involve federal regulations, corporate defendants, accident reconstruction experts, black box data, and catastrophic injuries. Successfully pursuing these cases requires experience and resources.

D’Amore Law Group has built a reputation for handling complex injury and wrongful death claims involving commercial motor carriers. The firm’s experience investigating trucking crashes enables it to identify evidence and legal issues that less-experienced firms may overlook.

If you were injured in a collision involving a jackknife truck, speaking with a Tacoma truck accident lawyer can help you understand your options and determine the best path forward. Contact D’Amore Law Group today for a consultation.

Frequently Asked Questions

How Common Are Jackknife Accidents?

Jackknife accidents represent a relatively small percentage of all truck crashes, but they are among the most dangerous. Because a jackknifed tractor-trailer can sweep across multiple lanes or completely block a roadway, these collisions frequently involve multiple vehicles and severe injuries.

What Are the Most Common Causes of Jackknifing?

The most common causes include speeding, sudden braking, driver fatigue, distracted driving, slippery road conditions, improperly loaded cargo, and mechanical failures such as defective brakes or worn tires.

How Long Do I Have to File a Truck Accident Lawsuit in Washington?

In most cases, Washington’s statute of limitations allows three years from the date of the accident to file a personal injury lawsuit. However, exceptions may apply, and waiting too long can result in the loss of valuable evidence.

Legal References Used to Inform This Page

To ensure the accuracy and clarity of this page, we referenced official legal resources during the content development process: