Jackknife Accident Attorneys
When a truck trailer swings out of line, nearby drivers can be caught in a serious collision. Pisanchyn Law Firm investigates the vehicle, road conditions, and driver actions.

$100M+Settled for clients
1,000+Cases won
20+Years experience
24/7Available to help
Investigating Jackknife Truck Crashes
Braking, speed, load, maintenance, weather, and available vehicle data may all be relevant.
Documenting the Injury and Losses
Our attorneys review reports, photographs, witness accounts, medical treatment, and insurance coverage. We look at the immediate injuries and any lasting effects on work and daily life.
Tell Us What Happened
Free consultation. We can review the circumstances and explain possible next steps.
Vehicle Data
We examine this evidence to understand the collision and its impact.
Braking
We examine this evidence to understand the collision and its impact.
Cargo
We examine this evidence to understand the collision and its impact.
Road Conditions
We examine this evidence to understand the collision and its impact.
Maintenance
We examine this evidence to understand the collision and its impact.
Crash Sequence
We examine this evidence to understand the collision and its impact.
Jackknife Truck Accident Attorneys
There are different types of trucking accidents. A jackknife truck accident occurs when the truck cab and the trailer end up at an angle that resembles a jackknife and its protective handle. Generally, a jackknife truck accident occurs when the truck’s drive wheels lock up, usually during wet or slippery conditions. While road and weather conditions are certainly contributing factors to jackknife truck accidents, more often than not these dangerous accidents occur as a result of negligence by the truck driver. Our Pennsylvania truck accident lawyers will investigate the case to see if negligence was the cause your jackknife truck accident and get you the compensation you deserve.
There are three braking options truck drivers have in the event of an emergency. The truck driver has the option to:
- Lock the steering axle brakes – When the truck driver chooses to lock the steering axle brakes it causes the big rig to move ahead on a straight path, regardless of the wheel angle. If the truck is headed toward a barrier or median it will continue on that path until it hits or stops, whichever happens first. The straight path leaves other drivers at less risk because they can see the direction the semi is heading and hopefully have time to compensate their driving to avoid a wreck.
- Lock the drive axles – When the truck driver chooses to lock the drive axles, or drive wheels, the end result is usually a jackknife accident. By locking the wheels the excess energy in the cab and the trailer has nowhere to go, as its means of travel has been locked, so the excess energy then forces the trailer forward. Jackknife truck accidents are so dangerous because as the trailer is careening out of control it has the potential to go across other lanes of traffic wiping out all that is in its path.
- Lock the trailer axles – When the truck driver locks the tractor trailer axles the motion in the trailer is suddenly halted which then pushes its excess energy onto the cab. All the excess energy being suddenly transferred forward causes the driver to lose directional control over the entire vehicle which can end in numerous types of dangerous tractor trailer accidents.
Potential outcomes in truck accidents depend on the driver’s actions. It is the job of the trucking company to ensure that all tractor trailer drivers know all of his or her options in the event of an accident and know how each option will end. Locking the steering axle is the safest option because the path of travel is predictable. If your Pennsylvania tractor trailer accident is caused by the driver locking the drive axles or the trailer axles the driver could be negligent. Our Pennsylvania truck accident lawyers will get you the compensation you deserve if your tractor trailer accident was the result of negligence.
OUR PENNSYLVANIA JACKKNIFE TRUCK ACCIDENT LAWYERS CAN HELP
Don’t let trucking companies push you around anymore than they already have; The Pisanchyn Law Firm’s Pennsylvania jackknife truck accident attorneys can help you receive the full amount of compensation deserved for your injuries, loss, and traumatic experience. Never agree to any offer made by the trucking company or their insurance adjusters without first consulting legal aid. Our truck accident attorneys offer free services until we win your jackknife truck accident case and even then you will never pay out of pocket; we will only be paying you the money you deserve. Once you hire us as your attorneys we will immediately send out our own investigators to the scene, have them speak with witnesses, and review and report our findings so that you and your interests are fully protected.
Please, call our local Pennsylvania truck accident lawyers toll free at 1-800-444-5309 for a free consultation.
Records That Can Help
- Seek appropriate medical care and follow the treating team’s advice.
- Keep records of appointments, treatment, therapy, and related expenses.
- Preserve incident reports, photographs, and witness contact information.
- Document missed work and changes in daily activities.
- Ask about future needs before accepting a settlement.
Related Accident Pages
Explore other accident claims and the evidence that can matter.
Jackknife Truck Crashes FAQs
What evidence should I keep?
Save treatment records, photographs, incident reports, witness details, and records of expenses or missed work.
Can future care be part of a claim?
When supported by the facts and medical evidence, future treatment and support needs may be considered alongside immediate losses.
What happens during a free consultation?
We can listen to what happened, discuss available information, and explain possible next steps.
Help From Pisanchyn Law Firm
Our attorneys serve injured people and families in Scranton, Harrisburg, Pittsburgh, and surrounding communities. We can review what happened and help document the injury’s impact.
Injured in an Accident?
Free consultation • Available 24/7