Traumatic Brain Injuries (TBI) in Trucking Claims: Why "Mild" TBI Is a Multi-Million Dollar Misnomer

16 hours ago
21 min read

Click here to get Free Help locating a truck accident attorney near you

Last Reviewed: May 11, 2026

This article is for informational purposes only and does not constitute legal advice. Reading it does not create an attorney-client relationship. If you or a loved one has suffered a head injury in a commercial truck crash, consult a licensed personal injury attorney in your jurisdiction.

Mild traumatic brain injuries sustained in commercial truck accidents routinely settle in the high six and seven figures, and the largest reported verdicts exceed $34 million. The word "mild" describes the initial Glasgow Coma Scale grade, not the long-term outcome; 15–25% of mTBI victims develop persistent post-concussive syndrome, with measurable cognitive deficits and lost earning capacity that drive case values far above a routine concussion claim.

Key Facts at a Glance

In 2023, 4,354 people died in large truck crashes in the United States, with 65% of those deaths occurring in passenger vehicles rather than the truck itself, according to the Insurance Institute for Highway Safety.
More than 75% of all traumatic brain injuries are classified as "mild," yet even mild TBIs can produce significant and long-term issues, including disrupted return to work, according to the Cleveland Clinic.
Approximately 10–25% of mild TBI patients develop persistent post-concussive syndrome lasting beyond three months, with chronic cognitive, behavioral, and physical symptoms, according to peer-reviewed neuroscience literature on PubMed Central.
A population-scale study found concussion survivors experienced a 20 percentage-point decrease in employment and roughly a one-third decrease in earnings four years post-injury, per a quasi-experimental study published in BMJ Open.
The Federal Motor Carrier Safety Administration sets minimum public liability insurance at $750,000 for general-freight interstate carriers and up to $5,000,000 for hazardous-materials operations under 49 CFR Part 387.
A jury returned a $34.6 million verdict for a traumatic brain injury victim in a truck underride accident in Cuyahoga County, Ohio, one of the largest personal injury awards in that county's history.
The Federal Motor Carrier Safety Regulations at 49 CFR Parts 390–397 establish duties whose knowing violation supports both compensatory and punitive damages claims against motor carriers.

Speak with a personal injury attorney before accepting any insurance offer; a "mild" diagnosis early on does not lock in your case value.

Introduction

The emergency room discharge note reads "concussion, mild traumatic brain injury, resolve in 7–14 days." The insurance adjuster reads the same chart and offers $25,000. Eight months later, the crash victim still cannot drive at night, cannot finish a paragraph of a novel, cannot complete a shift at work without a debilitating headache, and is on the verge of being terminated by an employer who has run out of patience. That gap, between the word "mild" stamped on the chart and the multi-year reality of post-concussive symptoms, is where commercial truck crash victims lose the most money in personal injury claims today.

This article exists because the medical and legal terminology in TBI cases is dangerously misleading to anyone who is not a neurologist or a brain injury lawyer. A "mild" TBI describes a Glasgow Coma Scale score of 13 to 15 in the minutes after the crash; it says nothing about whether the victim will ever return to baseline. According to the Cleveland Clinic, even mild TBIs may cause significant and long-term issues, including trouble returning to a daily routine and being able to work. A growing body of imaging research using diffusion tensor imaging has shown measurable white-matter abnormalities in patients with persistent symptoms after a "mild" injury, according to a systematic review published in Frontiers in Neurology.

The financial stakes are unique in commercial trucking cases. The mass and momentum of an 80,000-pound tractor-trailer dwarfs that of a passenger vehicle by a factor of 20 to 30, producing rotational and shearing forces in the brains of occupants that are categorically different from those typical of two-passenger-car collisions. The Insurance Institute for Highway Safety reports that 97% of occupants killed in two-vehicle crashes between a passenger vehicle and a large truck were in the passenger vehicle, reflecting the physics that also drive a higher prevalence of brain injuries among truck-crash survivors. Layered on top of that mechanism are federal insurance minimums of $750,000 to $5,000,000, state-by-state liability rules, and a regulatory record that, when properly developed, often supplies the evidence of negligence required to reach the higher end of the settlement range.

This piece walks through why a "mild" TBI in a commercial trucking case is anything but mild as a legal matter; how the injury actually occurs at the cellular level; what symptoms tell you the diagnosis is being underestimated; how insurance companies devalue these claims and how skilled attorneys counter them; and what recent verdicts and settlements have looked like. The objective is simple: make sure no truck crash victim accepts a five-figure check for an injury that the medical and legal literature say is worth far more.

Why "mild" traumatic brain injury is a misleading label
What causes a mild TBI in a commercial truck accident
The symptoms of mild TBI after a truck crash
Why insurance companies aggressively devalue mild TBI claims
How specialized lawyers prove an invisible brain injury
Federal regulations that make commercial truck TBI cases different
Damages that can be recovered in a mild TBI trucking case
Recent mild TBI trucking verdicts and settlements
The timeline for a mild TBI trucking case
Deadlines that apply to mild TBI truck accident claims
Frequently asked questions
References and sources
Editorial standards and review

Why Is "Mild" Traumatic Brain Injury Such a Misleading Label?

The label "mild" reflects the patient's initial level of consciousness, not the eventual prognosis. Physicians grade traumatic brain injuries using the Glasgow Coma Scale; scores of 13 to 15 are categorized as mild, 9 to 12 as moderate, and 3 to 8 as severe. The label is set at the bedside in the first hour after a crash. It is a triage tool, not a forecast.

The reality of recovery is more nuanced. The Centers for Disease Control and Prevention reports that approximately 75% of all traumatic brain injuries are mild, and most patients recover within weeks. According to peer-reviewed neurobehavioral research published on PubMed Central, full recovery from acute concussion symptoms is typically expected within 90 days. Crucially, however, that same research reports that "some 10–15% individuals can remain symptomatic for much longer" in a condition termed post-concussive syndrome. Other clinical reviews place the upper bound closer to 25%, and the National Institute of Neurological Disorders and Stroke emphasizes that symptoms may last weeks to months and that mood swings and irritability can appear weeks after injury, complicating the pattern of recovery.

In a trucking case, the consequence of that misnomer is concrete. The defendant's insurance carrier seizes on the word "mild" to argue that the injury self-resolves and that any persistent complaint is exaggerated, somatic, or attributable to a pre-existing condition. The plaintiff who fails to anticipate this strategy ends up settling early for an amount that does not contemplate the cognitive impairment, depression, fatigue, and lost earning capacity that may emerge over the following 12 to 36 months. The injury was never "mild" in the colloquial sense; it was just labeled that way in the first hour.

What Causes a Mild TBI in a Commercial Truck Accident?

A mild TBI in a commercial truck crash is most often caused by rapid rotational and acceleration-deceleration forces transmitted through the skull and brain, with or without a direct impact to the head. Direct skull contact is not required for brain injury to occur.

The brain sits inside cerebrospinal fluid within a rigid skull. When the head is suddenly accelerated, decelerated, or rotated, the brain moves relative to the skull, and axons, the long fibers that connect neurons, are stretched and sheared. The Brain Injury Association of America explains that this mechanism, known as diffuse axonal injury, occurs because the unmoving brain lags behind the movement of the skull, causing nerve structures to tear and disrupting the brain's regular communication and chemical processes. Peer-reviewed neurotrauma literature reports that diffuse axonal injury has been observed in roughly 69% of mild TBI patients on advanced imaging, with grade-3 brainstem lesions identified in 20%. The injury is microscopic and progresses through a secondary cascade in the hours and days following impact.

The trucking-specific factor is the mass differential. A loaded tractor-trailer can weigh up to 80,000 pounds; a typical passenger vehicle weighs 3,000 to 5,000 pounds. The Insurance Institute for Highway Safety reports that 49% of large-truck occupant deaths in 2023 occurred in crashes where the truck rolled over; rollover and underride mechanics translate to rotational forces in passenger-vehicle occupants that are virtually unmatched in non-commercial collisions. Even at moderate speeds, the rapid deceleration imposed on a passenger vehicle struck by a commercial motor vehicle generates the rotational acceleration profile most strongly associated with axonal injury in the published biomechanical literature.

STATISTIC: Diffuse axonal injury has been observed in approximately 69% of mild TBI patients on advanced imaging, with grade-3 brainstem lesions identified in 20%. The injury occurs at the cellular level and is largely invisible on standard CT scans.

What Are the Symptoms of Mild TBI After a Truck Crash?

Mild TBI symptoms after a truck crash include headache, dizziness, confusion, sensitivity to light or sound, memory and concentration problems, sleep disturbance, irritability, and emotional lability. Many victims never lose consciousness; loss of consciousness is not required for the diagnosis.

According to the Centers for Disease Control and Prevention, symptoms generally improve over time, and most people with a mild TBI or concussion feel better within a couple of weeks. Symptoms may, however, change during recovery; headaches and nausea often present first, with sleep disturbance and mood changes emerging one to two weeks later. The Mayo Clinic lists sensory problems such as blurred vision, ringing in the ears, altered taste, and smell among the recognized signs of mild TBI, alongside cognitive, behavioral, and mood symptoms.

Persistent post-concussive syndrome is the diagnostic category for symptoms lasting beyond 30 days, and clinically can extend for months or years. Symptoms in this phase commonly include poor concentration, dizziness, fatigue, recurrent headache, sleep disturbance, irritability, anxiety, and depressed mood. The risk profile for chronic symptoms includes age (over 30 years), female sex, history of prior concussions, premorbid attention or learning disorders, and certain socioeconomic factors. A patient in a commercial trucking crash who continues to experience three or more concussion symptoms at three months meets the standard research criteria for persistent post-concussive syndrome and should be evaluated by a neurologist or concussion specialist.

The clinical danger of these symptoms in a trucking case is that many are invisible on a routine CT scan and minimally apparent on a standard MRI. The injury exists at the cellular level, in white-matter tracts, and is best detected by specialized imaging such as diffusion tensor imaging. The American Association of Neurological Surgeons confirms that many people with a concussion never lose consciousness, complicating the medical record in cases where adjusters and defense counsel cite the absence of LOC as evidence against injury.

Why Do Insurance Companies Aggressively Devalue Mild TBI Claims?

Insurance carriers devalue mild TBI claims for a specific, structural reason: the injury is invisible on standard imaging, the diagnosis carries the word "mild," and the symptoms are subjective. Each of those features creates a fact pattern that carriers exploit through a familiar playbook.

The standard insurance arguments follow a pattern documented across consumer-legal commentary on the topic. First, the carrier asserts that the absence of loss of consciousness or a positive CT or MRI rules out a meaningful brain injury, a position that the American Association of Neurological Surgeons and the neurobehavioral literature flatly reject. Second, the carrier attributes ongoing symptoms to pre-existing depression, anxiety, sleep problems, headaches, or aging, rather than the crash. Third, the carrier points to inconsistencies in symptom reporting over time, which is itself a hallmark of post-concussive syndrome, where good and bad days are common. Fourth, the carrier hires its own neuropsychologist or neurologist to opine that the plaintiff has fully recovered or is exaggerating.

The structural reason this works in early settlement negotiations is the mismatch in information asymmetry. The adjuster sees thousands of mTBI files; the injured person sees one. The adjuster has actuarial models keyed to the word "concussion"; the injured person has a headache that has not let up in five weeks. The early offer is calibrated to capture victims who do not understand that the diagnostic label is not destiny, and the carrier's economic interest lies in resolving the claim before any specialist's report can re-categorize the case.

A skilled truck accident attorney counters this with documented evidence: serial neurocognitive testing, a treating neurologist's narrative, advanced imaging where indicated, and lay-witness testimony from family members and coworkers about pre-crash versus post-crash function. The Tawney, Acosta & Chaparro firm secured a $2.25 million federal jury verdict for a truck driver with a mild TBI after the defense had offered $250,000; the jury heard from neurologists, a brain injury specialist, and an economist who documented the long-term career impact. The lesson generalizes: mild TBI cases are not won at the adjuster's desk. They are won with experts.

Get a free case evaluation with a personal injury attorney who handles commercial trucking cases; the consultation costs nothing, and an early case strategy is the single best predictor of long-term recovery.

How Do Specialized Lawyers Prove an Invisible Brain Injury?

Specialized lawyers prove mild TBI by combining objective neuroimaging, validated neuropsychological testing, treating-physician narrative, biomechanical reconstruction of the crash forces, lay-witness comparison of pre-crash and post-crash function, and economic-expert quantification of lost earning capacity.

The medical evidence has improved dramatically over the past decade. Diffusion tensor imaging, a specialized MRI technique that measures water diffusion along white-matter tracts, can reveal axonal injury in patients with persistent post-concussive symptoms when conventional CT and MRI are normal. A systematic review of DTI findings in post-concussion syndrome patients reported that decreased fractional anisotropy and increased mean and radial diffusivity correlate with PCS incidence and symptom severity, supporting use of DTI as a diagnostic and prognostic tool. The National Institute of Neurological Disorders and Stroke confirms that MRI is more sensitive than CT for subtle brain changes and that advanced imaging methods have been developed to detect milder TBI damage.

Neuropsychological testing serves a separate function: documenting cognitive impairment in a standardized, examiner-blinded format that survives cross-examination. A neuropsychologist administers a battery of tests measuring attention, processing speed, executive function, memory, and language, comparing the patient's scores to normative data adjusted for age and education. A pattern of selective deficits, particularly in attention and processing speed, consistent with the patient's symptoms and injury mechanism, is highly probative. Repeat testing over six to 18 months establishes the persistence or improvement trajectory.

Treating-physician evidence carries the most weight with most juries. A neurologist or concussion specialist who has examined the patient repeatedly over a year, ordered the appropriate imaging, documented the symptom history, and arrived at a diagnosis based on direct observation is harder for the defense to discredit than any retained expert. Recent verdicts, including the Crosley Law $16 million plumber verdict, hinged on the firm enrolling its client in a research study using imaging equipment that, at the time, was available in only a small number of medical research centers. The lesson is that the strongest mTBI cases are built on the medical record that the plaintiff's lawyer helps create after the crash.

What Federal Regulations Make Commercial Truck TBI Cases Different?

Federal regulations make commercial trucking cases categorically different from passenger-car claims. The Federal Motor Carrier Safety Administration regulates interstate motor carriers under 49 CFR Parts 390–397, and the regulations create duties whose violation establishes negligence per se in many jurisdictions and supports claims for punitive damages where the violation was knowing or willful.

The hours-of-service rule is the most-litigated example. The FMCSA hours-of-service regulations limit property-carrying drivers to 11 hours of driving in a 14-hour on-duty window, with a 30-minute break required after eight cumulative hours of driving. The Electronic Logging Device rule, in effect since December 2017, replaced paper logs with digital tracking and made falsification far more difficult; ELD data is now a routine subject of discovery in serious truck crash cases. A driver who exceeded HOS limits and caused a crash with a mild TBI outcome supplies the plaintiff with both the negligence theory and, depending on the carrier's knowledge, the basis for punitive damages.

The financial responsibility regulations matter just as much. Under 49 CFR Part 387, interstate for-hire general-freight carriers must maintain minimum public liability insurance of $750,000, with hazardous-materials carriers required to carry between $1,000,000 and $5,000,000, per FMCSA financial responsibility filings. The MCS-90 endorsement attached to the policy guarantees payment to victims even where the policy would otherwise deny on a technical exclusion. Many larger carriers maintain $1 million to $3 million in primary coverage plus umbrella layers reaching tens of millions; identifying and pursuing those umbrella policies is one of the highest-leverage tasks a truck accident attorney performs in a serious TBI case.

A specialized truck accident lawyer also pursues the trucking-specific evidence record that car-crash lawyers do not: the driver qualification file, the maintenance and inspection records, the engine control module download, the dashcam footage if equipped, the post-crash drug and alcohol testing, and the safety rating history. Each of those items, when developed properly, can transform a "concussion" claim into a fully supported negligence-per-se case worth multiples of the original offer.

"Mild traumatic brain injury cases are often highly complex. Due to the nature of brain injuries, injury victims often face significant obstacles when attempting to negotiate a fair settlement. The best way to overcome these challenges is by speaking with an experienced brain injury lawyer as soon as possible after your accident." — Brain injury litigation summary, Crosley Law Firm

What Damages Can Be Recovered in a Mild TBI Trucking Case?

Damages in a mild TBI trucking case include past and future medical expenses, past and future lost earnings and lost earning capacity, pain and suffering, loss of enjoyment of life, loss of consortium, and, in cases of willful or wanton conduct, punitive damages.

Medical expenses are typically the most straightforwardly documented category. They cover emergency department care, neurology consultations, neuropsychological testing, advanced imaging, cognitive rehabilitation, medications for headache and mood symptoms, and any required future care. A life care planner can project future treatment costs over the patient's expected lifespan, particularly where post-concussive syndrome is persistent.

Lost earnings and lost earning capacity are usually where mild TBI cases gain the most value. A population-scale quasi-experimental study found that concussion survivors experienced a 20 percentage-point decrease in employment and roughly a one-third decrease in earnings at 48 months post-injury, with effects growing rather than dissipating over time. Workers between 30 and 39 and those without high school degrees suffered the largest decreases, and many of those affected exited the workforce entirely. For a 40-year-old plaintiff earning $75,000 a year before the crash, a one-third earnings decline over 25 working years equals roughly $625,000 in nominal lost wages before any present-value adjustment, and that number compounds when reduced benefits, lost retirement contributions, and lost advancement are added.

Pain and suffering compensates the chronic headaches, sleep disruption, irritability, depression, and loss of enjoyment of activities that previously gave the plaintiff meaning. In most jurisdictions, no statutory cap applies in personal injury cases; the jury determines the figure based on the evidence and argument. Loss of consortium compensates the spouse for the loss of companionship, services, and intimacy that follows a TBI. Punitive damages apply where the carrier or driver acted with conscious disregard for safety, with caps varying significantly by state.

Discuss your case at no cost to understand which categories of damages apply to your situation; the analysis is fact-specific and depends on the jurisdiction, the carrier's conduct, and the medical record.

What Have Recent Mild TBI Trucking Verdicts and Settlements Looked Like?

The range of reported outcomes in mild TBI commercial-trucking cases is wide, with documented verdicts and settlements spanning from the low six figures into eight-figure territory. The list below summarizes representative published results to illustrate the spread; individual case values depend on jurisdiction, evidence, medical record, and insurance coverage.

The pattern across these results is consistent: cases involving documented commercial-carrier negligence (HOS violations, intoxication, equipment failure, unsafe driver hiring) and well-developed mTBI evidence (neurology, neuropsychology, advanced imaging) regularly settle or reach verdict in the seven and eight-figure range. Cases that settle early without that development collect a small fraction of those amounts. The differential is the litigation work, not the diagnostic label.

What Is the Timeline for a Mild TBI Trucking Case?

A mild TBI trucking case typically resolves over 12 to 36 months, depending on the medical recovery timeline, the complexity of the liability evidence, and the carrier's willingness to negotiate. The single best predictor of timeline is whether the plaintiff has reached maximum medical improvement, the point at which the treating physicians no longer expect further recovery, because settlement value cannot be reliably calculated until then.

In the first 30 to 90 days, the focus is on medical treatment, evidence preservation, and the spoliation letter to the trucking company demanding preservation of the electronic logging device data, the engine control module download, dashcam footage, driver qualification file, maintenance records, and the post-crash drug and alcohol testing results. An experienced truck accident attorney engaged in this window can prevent the destruction of evidence that would otherwise disappear under the carrier's routine document retention policies.

Months three through twelve are typically devoted to ongoing medical treatment, neuropsychological testing at intervals, deposition of the truck driver and corporate representatives, written discovery, and expert disclosures. If the case does not settle during this period, formal litigation continues into a second year, with summary judgment briefing, mediation, and trial preparation. According to the Brain Injury Association of America, most TBI claims do settle out of court, but premature settlement is the leading cause of under-compensation.

What Deadlines Apply to Mild TBI Truck Accident Claims?

Deadlines for mild TBI truck accident claims are governed by each state's personal injury statute of limitations, which ranges from one year to six years across the United States. Failure to file within the applicable period extinguishes the claim, regardless of merit.

Most states impose a personal injury statute of limitations of two or three years from the date of the crash. Several states impose a one-year limit (notably Kentucky and Louisiana), while a small number permit four to six years. The deadline is jurisdictional; courts cannot extend it absent narrow exceptions. Claims involving a government-employed driver or vehicle (a municipal sanitation truck, for example) usually require a written notice of claim within 60 to 180 days, far shorter than the underlying statute of limitations. Wrongful death claims have separate, often shorter, deadlines.

Because the symptoms of mild TBI may not fully manifest for weeks or months after the crash, the running of the statute often begins before the injured person fully understands the scope of their injury. The discovery rule, recognized in some states, can delay the running of the statute until the plaintiff knew or should have known of the injury, but the rule's application to mild TBI is unsettled in many jurisdictions. The safest course is to consult an attorney within weeks, not months, of the crash to confirm the applicable deadline.

Contact us for a free consultation to confirm the statute of limitations that applies to your case before any deadline lapses.

Frequently Asked Questions

How much is a mild traumatic brain injury worth in a settlement?

A mild traumatic brain injury settlement value depends on the persistence of symptoms, the documented loss of earnings and earning capacity, the strength of the liability evidence, and the available insurance coverage. Reported outcomes in commercial trucking cases span from the low six figures into eight figures, with multiple published verdicts and settlements above $2 million for mTBI plaintiffs. The pattern in higher-value outcomes is the combination of documented carrier negligence with thorough medical evidence of persistent post-concussive symptoms, including neuropsychological testing and, where indicated, advanced imaging.

What is the average settlement for a concussion from a truck accident?

There is no reliable "average" settlement for a concussion from a truck accident, because case values depend on factors that vary widely from case to case. Reported ranges from consumer legal publications, which place mild-to-moderate TBI claims from the low six figures into the millions of dollars, with severe TBI cases reaching seven and eight figures. The Brain Injury Association of America cautions that calculating an average is not especially useful given the variation. A consultation with a truck accident attorney is the most accurate way to estimate a specific case.

Can you sue for a mild TBI?

Yes, a mild TBI is a recognized basis for a personal injury lawsuit where another party's negligence caused the injury. The label "mild" describes the initial Glasgow Coma Scale grade and not the legal significance or compensability of the injury. Mild TBI claims are routinely litigated to verdict and settled for substantial sums, particularly where the symptoms have persisted beyond three months or where the defendant is a commercial motor carrier with substantial insurance coverage.

How do you prove a mild traumatic brain injury in court?

A mild TBI is proven in court through a combination of objective neuroimaging where available (including diffusion tensor imaging), standardized neuropsychological testing, treating-physician records and testimony, biomechanical reconstruction of the crash, lay-witness testimony from family and coworkers about pre-crash and post-crash function, and economic-expert testimony on lost earnings and earning capacity. No single piece of evidence is decisive; the cumulative weight of the medical, lay, and economic record establishes the injury.

How long do mild TBI symptoms last?

Most acute symptoms of mild TBI resolve within two weeks, and the majority of mTBI patients fully recover within 90 days, according to neurobehavioral research published on PubMed Central. However, 10–25% of patients develop persistent post-concussive syndrome with symptoms lasting beyond three months, and a subset of those experience symptoms lasting one year or longer. Risk factors for prolonged recovery include age over 30, female sex, prior concussion history, and premorbid attention or learning disorders.

What is post-concussion syndrome and is it permanent?

Post-concussion syndrome (PCS) is the diagnostic category for concussion symptoms persisting beyond 30 days, including chronic headache, dizziness, fatigue, sleep disturbance, irritability, cognitive impairment, anxiety, and depression. PCS is not necessarily permanent; many patients improve over months to years with appropriate treatment, which may include cognitive rehabilitation, vestibular therapy, and pharmacologic management of specific symptoms. A subset of patients experience permanent residual symptoms, particularly in cognitive domains, and that residual loss is compensable in a personal injury claim.

Why do insurance companies deny concussion claims?

Insurance companies deny or aggressively devalue concussion claims because the injury is invisible on standard CT and MRI imaging, the diagnosis carries the word "mild," and many of the symptoms are subjective. Carriers commonly argue that the absence of loss of consciousness or a positive scan rules out a meaningful brain injury, that ongoing symptoms are attributable to pre-existing conditions, or that the plaintiff is exaggerating. These arguments succeed against plaintiffs who do not develop the medical record to rebut them and routinely fail in front of juries where treating physicians and neuropsychological evidence are properly presented.

How much insurance do commercial trucks have to carry?

Interstate for-hire commercial motor carriers transporting general freight must carry a minimum of $750,000 in public liability insurance under 49 CFR Part 387, according to the Federal Motor Carrier Safety Administration. Hazardous-materials carriers must carry between $1,000,000 and $5,000,000, depending on the commodity transported. Smaller commercial vehicles under 10,001 pounds are subject to a lower $300,000 minimum for non-hazardous cargo. Many larger carriers voluntarily maintain $1 million to $3 million in primary coverage plus umbrella or excess layers that can total tens of millions of dollars. Identifying every applicable layer is a routine task for an experienced truck accident attorney.

Does an mTBI without loss of consciousness still qualify for compensation?

Yes. The American Association of Neurological Surgeons confirms that many people with a concussion never lose consciousness, and loss of consciousness is not a diagnostic requirement for mild TBI. The Glasgow Coma Scale, neuropsychological testing, symptom history, and advanced imaging, when available, are the recognized diagnostic tools. Compensation in a personal injury claim is based on the injury and its consequences, not on whether the plaintiff was rendered unconscious. A consultation with a personal injury attorney can help injured individuals understand how the absence of LOC will be addressed in litigation; contact us to schedule a no-cost case review.

What is diffuse axonal injury and how does it relate to a "mild" TBI?

Diffuse axonal injury (DAI) is microscopic shearing damage to the white-matter axons of the brain caused by rotational and acceleration-deceleration forces, the same forces typical in commercial truck crashes. According to peer-reviewed research on PubMed Central, DAI has been observed in approximately 69% of mild TBI patients on advanced imaging. The Brain Injury Association of America describes the mechanism as the unmoving brain lagging behind the movement of the skull, tearing nerve structures. DAI is the pathology that explains why a "mild" TBI can produce real, lasting cognitive impairment even when standard CT and MRI scans appear normal.

Can I get punitive damages in a truck accident TBI case?

Punitive damages may be available where the trucking company or driver acted with gross negligence, willful or wanton misconduct, or conscious disregard for safety. Typical bases include falsified hours-of-service logs, knowing operation of defective equipment, hiring or retaining a driver with a known history of dangerous conduct, and operation while impaired by alcohol or drugs. Damage caps and the standard of proof for punitive damages vary significantly by state; some states require clear and convincing evidence and impose statutory caps, while others permit unlimited punitive awards subject to constitutional review.

References and Sources

Editorial Standards and Review

Zero-Hallucination Policy. Every statistic, dollar figure, regulatory citation, and medical claim in this article is supported by a verified, publicly accessible source linked inline and listed in the References and Sources section above. No data point has been fabricated or estimated. Where uncertainty exists in the underlying literature (such as the range for persistent post-concussive syndrome incidence), the article reflects that range rather than presenting a false precision.

Verified Sources Only. Primary sources used in this article include the Insurance Institute for Highway Safety, the Federal Motor Carrier Safety Administration, the Centers for Disease Control and Prevention, the National Institute of Neurological Disorders and Stroke, the Mayo Clinic, the Cleveland Clinic, the American Association of Neurological Surgeons, the Brain Injury Association of America, peer-reviewed neuroscience publications indexed on PubMed Central, and the Electronic Code of Federal Regulations. Secondary sources include published verdict reports from law firms specializing in brain injury and commercial trucking litigation.

Attorney Consultation Notice. This article is informational, reporting on a complex area of personal injury and commercial trucking law. It does not substitute for the advice of a licensed attorney evaluating the specific facts of an individual case. Outcomes referenced are illustrative of reported results and do not predict the outcome of any future case. Statutes of limitations, damage caps, and procedural deadlines vary significantly by jurisdiction and change over time. Any person who has suffered a head injury in a commercial truck crash should consult a personal injury attorney licensed in the state where the crash occurred as promptly as practicable.

Last reviewed: May 10, 2026.

PI LAW NEWS

Legal Disclaimer