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When a semi jackknifes, the trailer can swing out across several lanes before the truck stops, which can leave other drivers with little room to react.
At Fulmer Sill, Chad W.P. Kelliher leads the Truck Accident Practice Group and has devoted his legal career to representing injured Oklahomans, including in catastrophic injury and wrongful death claims. The firm has offices in Oklahoma City and Edmond.
If you were hurt in a jackknife crash, contact our Edmond Jackknife Truck Accident Lawyer to schedule a free consultation about your situation and your legal options.
| Truck Accident Practice Group Lead | Oklahoma Super Lawyers, 2026 | Rising Star, 2019-2023 | National Trial Lawyers Top 40 Under 40 | Oklahoma Bar Association Earl Sneed Award for Outstanding Contribution to CLE, 2021 |

Jackknife wrecks can happen for more than one reason, and understanding what caused a particular crash can affect who may be responsible.
Examples include:
Depending on the case, maintenance logs and driver records may be available to help explain what led to a crash.
A jackknife crash can cause serious injuries, including amputations, traumatic brain injuries, and crush injuries. On busy corridors such as I-35 or the Broadway Extension, a single crash can affect several families at once. The medical bills, lost wages, and long-term care that follow can be substantial.
Oklahoma generally adopts Federal Motor Carrier Safety Administration (FMCSA) regulations. Commercial drivers and trucking companies are expected to follow them. These rules cover hours of service, drug and alcohol testing, and cargo securement.
If a driver does not follow required rest rules or a company does not properly secure cargo, that may be important evidence in a jackknife case. Which rules apply depends on the vehicle, the load, and the facts, and an attorney can help determine how they fit your situation.
Oklahoma follows a comparative negligence rule, 23 O.S. § 13, and an insurer may argue that you share the blame. Generally, if you are found fifty percent or less at fault, your recovery may be reduced by your share of the blame. If you are found more than half at fault, your ability to recover may be barred. An Edmond Truck accident attorney can walk you through what this could mean for your case.
Get to safety, call 911, and get medical care even if you feel fine at the scene. Photos of the trailer’s position and the road conditions can matter later, but your health comes first.
It can. Some trucks passing through Edmond are on interstate routes, and the carrier may be based outside Oklahoma. That can affect where you can file your claim and which insurance policies apply, so these jurisdiction questions are worth raising early with an attorney.
A jackknife happens when the trailer swings out from behind the cab, which can block several lanes at once. That means a single mistake can involve several vehicles, not just the one directly behind the truck.
Common causes include sudden hard braking, wet or icy pavement, an overloaded trailer, or worn brakes. Our team may be able to request maintenance logs and driver records to help understand what led to a crash.
Edmond jackknife accident lawsuits are often filed in the Oklahoma County District Court in downtown Oklahoma City. Where a case can be filed depends on where the crash happened and where the defendants can be served. If a lawsuit is appropriate, an attorney can help with the filing and court appearances.
Oklahoma generally allows two years from the date of the crash to file a personal injury lawsuit, under 12 O.S. § 95(A)(3), but the deadline that applies to you may be different. Shorter or longer time limits can apply in some situations, such as when the injured person is a minor, when someone dies, or when a government entity is involved. Waiting can also risk losing evidence. An attorney can help determine which deadline applies to your situation.
Fulmer Sill handles cases on a contingency fee basis, which means attorney fees are paid only if there is a recovery. Initial consultations are free. A written fee agreement explains how case costs and expenses are handled.
The truck driver, the trucking company, a cargo loading contractor, or a maintenance provider can all share responsibility, depending on what caused the trailer to swing out. An attorney can look at the evidence to help sort out who may be responsible.
If you still have questions about your Edmond jackknife accident, our Truck Accident Practice Group can walk you through them in a free consultation.
The truck driver, the trucking company, a cargo loading contractor, or a maintenance provider can all share responsibility, depending on what caused the trailer to swing out. Which of them may be responsible depends on the facts of the crash and the evidence available.
If you have questions about an Edmond jackknife crash, contact Fulmer Sill to schedule a free consultation.
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