What Is a Jackknife Accident?



A jackknife accident occurs when a truck’s trailer swings outward at a sharp angle to the cab, forming a “V” shape that looks like a folding pocketknife. This usually happens with large commercial vehicles, such as 18-wheelers and semi-trucks, when a driver brakes suddenly or loses control of the trailer. The unexpected maneuver can cause serious collisions that lead to tragic injuries and even death. Call our trucking accident attorney in Washington D.C. for a free case evaluation today.

Common Causes of Jackknife Accidents 

Jackknife accidents result from a variety of factors. Some of the most common include the following:

  • Loss of Control Due to Weather Conditions: Rain, ice, and snow can make the roads slippery, causing the trailer to swing out suddenly.  
  • Sudden Braking or Excessive Speed: Slamming on the brakes or driving too fast – especially on uneven or wet pavement – can force the trailer to pivot around the cab. This sudden shift triggers the folding motion that results in a jackknife accident.
  • Mechanical Failures: Faulty brakes or other equipment issues can keep the trucker from controlling the trailer’s motion. Worn tires and poor maintenance also raise the risk of a dangerous swing.
  • Driver Inexperience or Improper Handling: Newer drivers may not know how to balance acceleration and braking in emergency situations. Mistakes in steering or overcorrecting the trailer can set off a jackknife.
  • Poor Road Conditions or Obstacles: Debris, potholes, or other hazards can jolt the trailer out of alignment with the cab. If the driver can’t correct the angle quickly enough, the trailer may fold in on itself.

No matter what the cause is, these vehicle accidents in Washington, D.C. can lead to serious injuries and significant property damage. 

Call our trucking accident attorneys at (202) 919-5453

Who is Liable in a Jackknife Accident?

Determining who is liable in a jackknife accident can be complicated and depends on the specific details of the crash. Below are some common parties who may bear responsibility:

The Truck Driver 

Operators have a duty to drive safely and maintain their rigs. Liability may arise if the driver was distracted or made poor decisions behind the wheel. Inexperience, fatigue, or substance use can factor into who is held accountable.

The Trucking Company 

Companies are required to keep their vehicles in working order and to hire and train competent drivers. Failure to perform regular maintenance or conduct proper background checks may place the company at fault. They can also be held responsible if they encourage unsafe driving practices, such as unrealistic delivery deadlines for delivery trucks.

Maintenance Providers or Manufacturers 

Sometimes, brake failures or other mechanical issues contribute to a jackknife. If a repair shop performs substandard work, or if a defective part from the manufacturer fails to function correctly, they may be partially to blame. 

Local or State Government (Road Hazards) 

Defects in road design or inadequate maintenance of highways could also play a role in the accident. If a poorly maintained or poorly designed roadway contributes to a jackknife, a government agency might face legal claims. These cases have specific procedural rules and deadlines, making it essential to talk to a lawyer right away.

Determining fault typically requires a detailed investigation, and working with a personal injury lawyer in Washington, D.C. is the best way to ensure you’re fully compensated for your losses.

How an Attorney Can Help After a Jackknife Accident

After a jackknife accident, an attorney can guide you through every step of the legal process. They can review police reports, speak with witnesses, look for dash cam footage, review internal documents from the trucking company, and collect any documents that point to who is at fault. They also handle negotiations with insurance companies so you can focus on recovering.

If you have any questions about a truck accident claim, we’re here to help. Contact us today to schedule a free consultation.