How is fault determined in a T-bone truck accident? A T-bone truck accident occurs when the front of a commercial vehicle strikes the side of another vehicle, or when another vehicle strikes the side of the truck. Determining fault may require traffic-signal data, video, witness statements, vehicle data, driver logs, cellphone records, and an examination of the truck’s brakes and other systems.
Reviewed for legal accuracy by Ryan C. Hasanbasic, Florida Bar No. 44119 | Updated August 20, 2026
Fowkes & Hasanbasic represents people injured in intersection crashes involving tractor-trailers, delivery trucks, dump trucks, buses, and other commercial vehicles throughout Tampa Bay and Florida. Our attorneys personally evaluate and handle each case, identify potentially responsible parties, preserve time-sensitive evidence, and document the full extent of the injuries and losses.
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Contents
Why Side-Impact Truck Collisions Cause Serious Injuries
The sides of most passenger vehicles provide less protective space than the front or rear. When a heavy commercial vehicle strikes a door or side panel, the impact can intrude into the passenger compartment and directly affect the occupant nearest the collision.
The initial impact may also push or rotate the smaller vehicle into opposing traffic, a barrier, a pole, another vehicle, or off the roadway. Occupants may experience more than one impact, and emergency responders may need to perform an extraction.
Who Had the Right of Way?
Right of way is often central to an intersection case, but it should not be decided from one driver’s statement alone. The investigation may consider:
- The traffic signal, stop sign, yield sign, or lane-control device governing each vehicle
- The direction, lane, speed, and intended movement of the vehicles
- Whether a driver entered on a red or stale yellow signal
- Whether the truck was turning left, turning right, or crossing multiple lanes
- Sight obstructions, lighting, weather, construction, and road design
- Whether either driver was speeding, distracted, fatigued, or impaired
- Whether a mechanical condition prevented the truck from stopping or steering safely
A commercial driver may claim that the passenger vehicle entered the intersection unexpectedly. Other evidence may confirm or contradict that account.
Evidence That May Establish How the Crash Happened
Intersection evidence can disappear quickly. Video may be overwritten, vehicles may be repaired or destroyed, and physical marks may fade. Depending on the case, important evidence may include:
- Traffic-camera, business-surveillance, doorbell, and vehicle video
- Traffic-signal timing, sequencing, maintenance, and malfunction records
- 911 calls, dispatch recordings, and emergency-response records
- Witness statements and contact information
- Police diagrams, photographs, measurements, and citations
- Truck engine-control-module or event-data-recorder information
- Dash-camera and inward-facing camera footage
- GPS, telematics, and electronic logging-device data
- Cellphone and dispatch communications
- Brake inspection, repair, and maintenance records
- Vehicle damage, airbag information, and scene evidence
Signal records may show how the intersection was programmed, but they may not identify the exact phase at the instant of the collision unless other technology captured that event. Video, witness accounts, vehicle movement, and physical evidence can help complete the timeline.
Common Causes of T-Bone Truck Accidents
A side-impact commercial-vehicle crash may result from one or several factors, including:
- Running a red light or stop sign
- Unsafe left or right turns
- Failing to yield while entering or crossing a roadway
- Speeding or driving too fast for conditions
- Texting or other distracted driving
- Fatigue or hours-of-service violations
- Drug or alcohol impairment
- Brake, tire, steering, or lighting failures
- Improper lane positioning or a wide-turn maneuver
- Blocked sight lines, defective signals, or inadequate traffic control
Investigating the Driver and Motor Carrier
The truck driver’s actions are only one part of the case. The motor carrier may possess records concerning hiring, training, supervision, prior incidents, hours of service, dispatch instructions, safety policies, vehicle maintenance, and post-crash investigation.
Depending on the facts and governing law, responsibility may involve the driver, motor carrier, vehicle owner, maintenance contractor, cargo company, or another entity. If a defective roadway or traffic-control device contributed, a governmental or contracting entity may also require investigation. Claims involving public entities can carry special notice requirements and deadlines.
Brake and Stopping-Distance Issues
A driver may say the truck could not stop before entering the intersection. The investigation should determine why. Speed, following distance, perception and reaction time, road grade, weather, cargo weight, brake condition, tire condition, and driver attention may all affect stopping.
Inspection and maintenance records can help determine whether the carrier or another responsible party identified and corrected safety problems. The truck and relevant components may need to be preserved for inspection before repairs or disposal.
Injuries Commonly Associated With Side-Impact Crashes
T-bone truck collisions can cause traumatic brain injuries, spinal-cord and back injuries, fractures, internal-organ injuries, chest and abdominal trauma, pelvic injuries, shoulder injuries, lacerations, psychological harm, permanent disability, or death.
Depending on the evidence and applicable law, recoverable damages may include medical expenses, lost income, diminished earning capacity, pain and suffering, disability, disfigurement, loss of enjoyment of life, property damage, and other losses. A fatal collision may support a wrongful-death claim by the appropriate estate and survivors.
What to Do After an Intersection Truck Crash
Seek appropriate medical care and preserve photographs, video, witness information, vehicle information, insurance information, and the crash-report number. If possible, identify nearby homes, businesses, buses, vehicles, or traffic systems that may have recorded the intersection.
A prompt preservation demand can address truck data, onboard video, dispatch messages, driver records, maintenance documents, and other company-controlled evidence. Avoid disposing of the damaged vehicle or other important physical evidence before considering whether an inspection is needed.
T-Bone Truck Accident Questions
Who is usually at fault in a T-bone truck accident?
There is no automatic answer. Fault depends on right of way, signal phase, vehicle movement, speed, attention, mechanical condition, witness testimony, video, and other evidence. More than one party may share responsibility.
Can traffic-camera footage be obtained?
Possibly. Some intersections or nearby properties record video, while others do not record or retain it for long. Identifying and requesting available footage promptly can be important.
Can a trucking company be responsible if its driver ran a red light?
Potentially. The driver’s relationship with the carrier, work activities, dispatch instructions, training, supervision, safety history, and other facts may affect the claims. The carrier may also have relevant insurance and evidence.
What if defective brakes contributed to the collision?
The driver, motor carrier, vehicle owner, maintenance contractor, parts manufacturer, or another entity may require investigation. Responsibility depends on the defect, notice, inspection duties, maintenance work, and causal relationship to the crash.
What if both drivers are accused of fault?
Florida’s comparative-fault rules may affect recovery. The allocation should be based on the evidence, and a claimant’s assigned share of fault may reduce recovery or bar it in some circumstances.
Request a Free T-Bone Truck Accident Case Review
Fowkes & Hasanbasic represents people injured in side-impact and intersection truck crashes throughout Tampa Bay and Florida. We offer a free case review and generally handle personal injury cases on a contingency-fee basis under a written representation agreement.
Contact the firm, return to the Truck Accident hub, or review the main Personal Injury hub.