Drivers in Indianapolis know how quickly a routine trip can turn dangerous when a tractor-trailer loses control. What is considered a jackknife accident is how the truck moves in the moments before impact. A jackknife crash often involves tractor-trailers when the trailer swings outward and creates a sharp angle with the cab, much like a folding pocketknife. This usually occurs when the trailer’s force pushes the cab, causing the rig to bend in on itself. While driver mistakes are a common cause, poor road conditions, driving too fast for the circumstances, or mechanical failures can also play a role.
At Blackburn Romey, we have seen how these crashes can leave victims facing devastating personal injuries that change their lives and we are here to guide you through the legal process when it matters most.
A jackknife truck accident is a type of crash involving a large commercial vehicle where the trailer swings out and forms an extreme angle with the cab. The Federal Motor Carrier Safety Administration defines a large truck as one with a gross vehicle weight rating (GVWR) greater than 10,000 pounds. This uncontrolled swing can block multiple lanes of traffic and lead to multi-vehicle crashes
These dangerous events often happen in seconds. A sudden stop on an icy stretch of road or a quick maneuver to avoid a hazard can cause the movement. For drivers nearby, the trailer’s swing can feel like a wall of steel moving sideways, leaving almost no chance to avoid it. Understanding what a jackknife accident is can help victims explain their crash more clearly when pursuing a claim.
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Many jackknife accidents result from a combination of human error and mechanical issues. Sudden braking, slippery pavement, or improper cargo loading can cause the trailer to swing out of alignment with the cab. Fatigue also plays a significant role.
In fact, the National Highway Traffic Safety Administration reports that more than 91,000 police-reported crashes involved drowsy drivers, leading to an estimated 50,000 injuries and nearly 800 deaths.
Mechanical defects such as worn brake pads or mismatched tire tread depths can reduce a truck’s stopping power, increasing the risk of jackknifing. Weather conditions, including heavy snow and freezing rain, can drastically reduce traction, making even cautious driving hazardous. During winter, Snow Plow Truck Accidents also become more frequent, as reduced visibility and slick roads make maneuvering large vehicles especially dangerous. Cargo that shifts unexpectedly due to improper securement can also destabilize the trailer.
These contributing elements often cause jackknife accidents, especially on busy highways and during hazardous conditions. Even a small mistake can cause a chain reaction that leads to the trailer swinging out of control.
Recognizing these factors is an important step in preventing future incidents and understanding how fault may be determined in a legal claim.
Liability in these cases depends on the facts uncovered in the investigation. It can fall on the truck driver, the trucking company, or even a third party, like a maintenance provider or cargo loader. Each may carry responsibility if their actions, negligence, or oversight contributed to the crash.
Evidence collection is critical here. Electronic logging devices, brake inspection records, and weigh station reports can all point to whether a violation or failure occurred. A clear understanding of what is considered a jackknife accident can strengthen your ability to interpret this evidence in context.
Jackknife accidents often involve significant force, making injuries severe. Victims may suffer from:
Spinal cord injuries can result in partial or full paralysis, often requiring long-term medical care, extensive rehabilitation, and significant lifestyle adjustments that affect work, mobility, and independence.
Traumatic brain injuries can cause lasting cognitive, physical, and emotional challenges, often requiring ongoing therapy, impacting every aspect of a person’s daily life.
Multiple fractures may require surgeries, extended rehabilitation, and time away from work and normal activities, often leading to months of limited mobility, financial difficulties, and the need for specialized care or home modifications.
These collisions can also cause severe lacerations, internal organ damage, or burn injuries if hazardous cargo ignites. Understanding why jackknife accidents are often catastrophic starts with a tractor-trailer’s immense size and momentum, which can cause the truck’s swing to crush smaller vehicles in its path.
Recovery often demands months of therapy, adaptive equipment, and ongoing medical treatment. The harm is not just physical; psychological trauma can also affect a person’s ability to work, drive, or even sleep without fear.
At the end of the day, taking prompt action can make a huge difference in protecting your claim and securing the support you need. At Blackburn Romey, we are ready to listen to your story, review the evidence, and guide you through every step. For questions about what is considered a jackknife accident, call us today at 833-FOR-HELP for a free consultation.
Blackburn Romey founding partner Tom Blackburn graduated with honors receiving a degree from Indiana University at the Robert H. McKinney School of Law. Initiating his legal career in 1977, he has been active in practicing law and currently serves as a member of the Indiana State Bar Association on the Ethics and Advertising Committees, the American Bar Association, the American Association for Justice, as a board member at the Indiana Trial Lawyers Association, and as an appointed member of the Executive Committee for the State of Indiana for the National Trial Lawyers Association.
This page has been written, edited, and reviewed by a team of legal writers following our comprehensive editorial guidelines. This page was approved by Founding Partner, Tom Blackburn, who has more than 47 years of legal experience, including over 39 years specializing as a personal injury attorney.
