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Understanding jackknife accidents

On Behalf of | Jul 7, 2026 | Truck Crashes

Large commercial trucks play an important role in keeping goods moving across the country every day. While most trips end safely, accidents involving tractor-trailers can have serious consequences when something goes wrong.

Because of their size and weight, trucks respond differently than passenger vehicles in emergency situations. Certain types of crashes are especially dangerous and can affect multiple vehicles at once.

Why jackknife crashes can be so dangerous

A jackknife accident occurs when a truck with an attached trailer swings outward and forms a 90-degree angle or a “V” shape with the cab, resembling a folding pocketknife. Once a truck begins to jackknife, the driver can lose control of the vehicle, creating a hazard that can block several lanes of traffic at once and involve numerous motorists.

Several factors can contribute to a jackknife accident. Sudden braking is one of the most common causes, particularly when roads are wet, icy or otherwise slippery. Improperly loaded cargo, excessive speed and driver error can also increase the risk. When the trailer loses traction while the cab continues moving, the trailer may swing sideways and create a dangerous situation in a matter of seconds.

These crashes are often severe because of the sheer size and force involved. A jackknifing truck can strike nearby vehicles, force drivers off the road or trigger chain-reaction collisions. Occupants of smaller passenger vehicles are especially vulnerable to serious injuries due to the significant difference in size and weight between a commercial truck and a car. In some cases, a jackknife accident may also lead to cargo spills, roadway closures and extensive property damage.

If you or a loved one has been injured in a truck accident, it may be helpful to learn more about your legal options. Speaking with a knowledgeable legal professional can provide guidance, answer your questions and help you understand the next steps available to you.

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