01
Excessive Speed
Driving too fast for traffic, curves, weather, or roadway conditions can make a combination vehicle more difficult to control.
Dallas–Fort Worth Jackknife Truck Accident Lawyer
When a trailer swings sideways,
the highway can disappear.
A jackknifing tractor-trailer can sweep across several traffic lanes in seconds, striking nearby vehicles or creating a sudden barrier that motorists have little opportunity to avoid.
The Piri Law Firm represents people throughout Dallas–Fort Worth after serious jackknife truck crashes involving commercial drivers, motor carriers, tractor-trailers, and catastrophic injuries.
DriverInvestigate conduct
TruckInspect equipment
DataPreserve records
LossDocument damages
DFWNorth Texas representation
Direct Answer
What causes a semi-truck to jackknife?
A tractor-trailer can jackknife when the tractor and trailer lose their normal alignment and the trailer swings toward the cab. Potential contributing factors include excessive speed, sudden or improper braking, slippery roads, driver error, equipment problems, improper loading, loss of traction, and unsafe reactions to traffic conditions.
Why Trucks Jackknife
A loss of control can turn an entire trailer into a moving barrier.
The investigation should look beyond the final position of the truck and determine what happened before the tractor and trailer lost alignment.
02
Improper Braking
Sudden braking or loss of traction during braking can contribute to instability between the tractor and trailer.
03
Driver Fatigue
A fatigued commercial driver may react late to stopped traffic, changing road conditions, or developing hazards.
04
Equipment Problems
Brake, tire, suspension, coupling, or other mechanical problems may affect the driver's ability to maintain control.
05
Cargo & Loading
Improperly distributed or unsecured cargo may affect trailer stability and vehicle handling.
06
Weather & Road Conditions
Rain, standing water, ice, construction, curves, and other conditions may require substantially reduced speed and greater following distance.
Physical Evidence
The pavement can preserve the story of how the trailer moved.
Tire marks, gouges, debris, vehicle positions, trailer damage, wheel evidence, impact points, and roadway conditions can help reconstruct how a jackknife developed and what occurred during the collision.
Skid and tire-mark patterns
Trailer and tractor damage
Brake, tire and mechanical condition
Roadway and impact evidence
Commercial Truck Evidence
A truck crash investigation reaches beyond the accident scene.
What was the driver doing?
Speed, braking, following distance, fatigue, distraction, steering input, hours of service, and reactions before the crash may all matter.
Was the truck mechanically sound?
Inspection, maintenance, repair, brake, tire, suspension, and equipment records may help determine whether a mechanical condition contributed.
What does the electronic data show?
Commercial vehicles may contain electronic information relevant to speed, braking, vehicle operation, and events surrounding the collision.
Who controlled the operation?
The motor carrier, vehicle owner, driver, maintenance providers, cargo-related entities, and other parties may require investigation depending on the facts.
Potentially Responsible Parties
A commercial truck case may involve more than the person behind the wheel.
The relationships among the driver, motor carrier, truck owner, trailer owner, maintenance providers, and cargo-related entities can affect the investigation.
Commercial Driver
Driving decisions, speed, braking, fatigue, distraction, training, and compliance may be relevant.
Motor Carrier
Company practices involving supervision, qualification, scheduling, safety, and vehicle operations may require review.
Maintenance Providers
Brake, tire, suspension, and other maintenance work may become important when equipment failure is suspected.
Cargo Entities
Loading, weight distribution, and cargo securement may be relevant when trailer stability contributed to the crash.
Evidence Preservation
Commercial trucking records should be identified early.
Truck-crash evidence can include driver records, electronic logging information, inspection and maintenance records, electronic vehicle data, photographs, video, cargo documents, dispatch information, and other materials. The evidence available depends on the circumstances of the particular crash.
Related Personal Injury Services
Jackknife crashes often overlap with other serious truck and highway claims.
Explore related accident and catastrophic-injury resources from The Piri Law Firm.
Truck Accidents
Commercial truck collisions can involve complex company, driver, equipment, and insurance evidence.
Explore →Rollover Truck Accidents
Loss of stability can result in rollovers as well as jackknife events.
Explore →Rear-End Truck Accidents
Failure to slow or stop a commercial vehicle can cause devastating highway collisions.
Explore →Highway & Freeway Accidents
A jackknifed trailer can block several lanes and trigger secondary highway impacts.
Explore →Traumatic Brain Injury
High-energy commercial truck crashes can cause serious neurological injuries.
Explore →Spinal Cord Injury
Truck impacts can cause severe spinal trauma and permanent functional impairment.
Explore →Catastrophic Injuries
Commercial truck collisions can cause permanent disability and lifelong medical needs.
Explore →Wrongful Death
Families may have claims after fatal jackknife and other commercial truck crashes.
Explore →Frequently Asked Questions
Jackknife truck accident questions.
What is a jackknife truck accident?
A jackknife occurs when the tractor and trailer lose their normal alignment and the trailer swings toward the tractor, potentially sweeping across adjacent traffic lanes.
What causes tractor-trailers to jackknife?
Potential causes can include excessive speed, improper braking, loss of traction, slippery roads, driver error, fatigue, equipment problems, and cargo or loading issues.
Who can be responsible for a jackknife truck crash?
Depending on the evidence, potentially relevant parties may include the commercial driver, motor carrier, truck or trailer owner, maintenance providers, cargo-related entities, or others whose conduct contributed to the collision.
What evidence should be preserved after a jackknife crash?
Potential evidence can include photographs, video, electronic vehicle information, driver records, logs, maintenance and inspection records, cargo documents, witness information, tire and skid marks, debris, and police records.
How long do I have to file a truck accident lawsuit in Texas?
Texas generally applies a two-year limitations period to personal injury claims, although exceptions can apply. Important trucking records and physical evidence may need to be preserved much sooner.
Confidential Consultation
What Are You Facing?
Tell us where the truck crash happened, how the tractor and trailer moved, which vehicles were involved, whether police responded, and what injuries and medical treatment followed.
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