Tractor-trailer crashes turn on coupling mechanics, rear-impact-guard physics, and underride collision dynamics — federally regulated, technically complex, and worked correctly only by attorneys who know the equipment.
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$1B+
Recovered for clients
3,000+
Cases handled
25+
Years in practice
7
California offices
What makes an 18-wheeler case different from a regular truck case
The phrase "18-wheeler" describes the standard tractor-trailer combination on American interstates: a Class 8 tractor with a fifth-wheel coupling, pulling a 53-foot trailer with eight wheels per axle group, with two more wheels on the steering axle of the tractor. Eighteen wheels, two articulated units, one driver. The mechanics matter because the typical injury patterns are different from a single-unit truck. Jackknife dynamics, override and underride collisions, fifth-wheel coupling failures, trailer hitch failures, rollover under cornering load — these are physics-driven failure modes that turn an 18-wheeler case into a reconstruction-and-engineering case as much as a witness case.
An 18-wheeler under cornering or panic-braking conditions can jackknife when the steering axle of the tractor decelerates faster than the drive axles, leaving the trailer to swing forward of the tractor's center of mass. The result on the I-405 Sepulveda Pass, the I-710 from the ports through the Vernon and Commerce industrial corridor, US-101 across the Santa Monica Mountains, and the I-5 Grapevine north of Castaic is multi-vehicle pile-ups whose liability picture demands accident reconstruction with brake-balance and load-shift analysis.
Underride collisions are the second physics-driven concern. When a passenger vehicle strikes the rear of a trailer that is stopped or moving slowly, the passenger compartment can pass beneath the trailer floor. The federally mandated rear impact guard under 49 CFR §393.86 and the Federal Motor Vehicle Safety Standards 223 and 224 (FMVSS 223/224) is supposed to prevent that outcome. When the guard is missing, corroded, improperly mounted, or below standard, the passenger-cabin intrusion that follows is the immediate cause of catastrophic head and neck injury. We retain mechanical engineers to inspect the actual guard, measure dimensions against the FMVSS standards, and render an opinion on whether the guard performed as designed.
Burg & Brock's 18-wheeler practice is led by Artin Fiterz, Cal Bar verification #323879, who handles tractor-trailer cases out of the Sherman Oaks headquarters and across the firm's seven California offices.
Your rights under California law
An 18-wheeler case is governed by California civil law and federal motor-carrier regulation. The combination produces both liability theories and admissible evidence:
California recovery rules apply: economic damages (medical, lost earnings, lost capacity, household services, modifications), non-economic damages (pain and suffering, loss of consortium, loss of enjoyment), and punitive damages where conduct supports them.
How Burg & Brock works your case
An 18-wheeler case is built in phases that overlap heavily with a Class 8 truck case but with additional engineering work because of the coupling and underride physics.
Spoliation discipline within 72 hours. Letters to the motor carrier, the trailer owner if separate, the broker, and the shipper. Preserve ELD data, dashcam footage, GPS, dispatch logs, the truck and trailer in pre-repair condition, the rear impact guard, and the fifth-wheel coupling.
Engineering inspection. A mechanical engineer measures the rear impact guard against FMVSS 223 and 224 (height above ground, distance from rear of trailer, lateral coverage, structural integrity). The fifth-wheel coupling is examined for wear, damage, and proper engagement.
Reconstruction. Reconstructionists analyze the crash sequence using physical evidence, ELD data, surveillance footage, and where available, aftermath photogrammetry from drones.
FMCSR records workup. Driver qualification file, drug-and-alcohol post-accident testing results, hours-of-service logs, and motor-carrier maintenance records.
Damages model. For catastrophic 18-wheeler crashes the damages model is the same intensive workup as any catastrophic case: life-care planner, treating physicians, vocational economist.
Demand and trial. Demand structured as a verdict form, supported by the engineering and reconstruction reports. Filing follows when the offer underreaches the floor of a reasonable jury range.
Tractor-trailer crash patterns we see most
Rear underride collisions. Passenger vehicle strikes rear of trailer; FMVSS 223/224 guard analysis under 49 CFR §393.86.
Side underride collisions. Federal side-underride standards remain underdeveloped; cases turn on guard-design and conspicuity-tape compliance.
Jackknife collisions. Brake-imbalance, weather, and driver-input proof; reconstructionist rebuilds the kinematics.
Fifth-wheel coupling failures. Mid-trip separation of tractor and trailer; the coupling is examined as the central piece of physical evidence.
Trailer-hitch failures on doubles and triples. Pintle hook and converter dolly inspection.
Rollover collisions. Center-of-gravity and load-distribution analysis; cargo-securement records.
Cargo-spill collisions. Hazmat or general-cargo spills on the freeway; environmental-cleanup overlap.
Lane-change and blind-spot collisions. Sepulveda Pass and 405-corridor patterns; conspicuity and mirror-system review.
Common causes
Defective, missing, or non-compliant rear impact guards under 49 CFR §393.86 and FMVSS 223/224.
Driver use of mobile devices in violation of 49 CFR §392.82.
Liability theories
The defendants in an 18-wheeler case mirror the big-rig liability stack with two additions specific to tractor-trailer combinations:
The driver, the motor carrier, the broker, and the shipper.
The trailer owner where separate from the tractor's owner.
The component manufacturer for the rear impact guard, the fifth-wheel coupling, the brake system, or the tire — when a defect contributed to the crash.
A maintenance vendor under contract for the trailer or the tractor.
A government entity for dangerous-condition-of-public-property claims under Government Code §835.
How damages break down
Economic damages
Past and future medical bills
Surgical, hospital, and rehabilitation costs
Prescription medication and durable medical equipment
Requires clear and convincing evidence of malice, oppression, or fraud
Drunk-driving and grossly reckless conduct can qualify
Calibrated to defendant's wealth and conduct
Designed to deter, not just compensate
Appellate review limits the multiplier
Reported settlement and verdict ranges
Case profile
Injuries
Reported range
Rear-underride collision, US-101
Catastrophic head and neck injury, surgical intervention
$1.5M–$8M depending on guard-defect proof
Jackknife multi-vehicle pile-up
Multiple plaintiffs, varying injury severity
$2M–$15M+ across the plaintiff group
Fifth-wheel coupling failure
Severe injury, runaway-trailer dynamics
$1M–$6M depending on equipment-defect support
Side-impact tractor-trailer collision
Spinal-cord injury, lifelong impairment
$3M–$12M with policy stacking
Cargo-spill incident on I-710
Multiple injuries, environmental complications
$1M–$8M depending on coverage
Past results do not guarantee future outcomes. Settlement values turn on liability, severity, insurance limits, and case-specific facts.
Why work with Burg & Brock
Burg & Brock's 18-wheeler practice runs out of the Sherman Oaks headquarters under Artin Fiterz, Cal Bar verification #323879. The trucking practice has tried tractor-trailer cases for more than two decades, works the FMCSR framework as a core part of every file, and retains the engineering and reconstruction experts who routinely testify in California state and federal court.
Same-day spoliation discipline.
Working bench of mechanical engineers, accident reconstructionists, ELD-forensics specialists, and forensic economists.
Seven California offices for client access; statewide trial coverage.
No fee unless we recover. Contingency under California Rule 1.5.
Seven steps after the tractor-trailer crash
Get medical care immediately. Adrenaline masks injury; the ER record is also evidence.
Photograph the truck and trailer with USDOT and MC numbers visible, the rear impact guard, the fifth-wheel coupling, and any visible damage.
Get the police report number. CHP handles most freeway tractor-trailer incidents in LA County.
Identify witnesses with phone numbers; commercial-driver witnesses route-shift quickly.
Decline recorded statements from the carrier's adjuster.
Preserve your damaged vehicle in pre-repair condition.
Talk to a tractor-trailer attorney within 72 hours so the spoliation letters preserve ELD and dashcam evidence.
Two-year clock under Code of Civil Procedure §335.1. California gives an injured person two years from the date of injury to file a personal-injury lawsuit
(CCP §335.1). Government-entity claims have a much shorter six-month deadline under
Government Code §911.2. Miss either deadline and the claim is gone.
Where these cases are filed
The Los Angeles Superior Court routes civil personal-injury filings to specific courthouses based on the location of the incident and the parties. Cases tied to this practice area typically land at:
Stanley Mosk Courthouse — 111 N. Hill Street, Los Angeles (general civil)
Spring Street Courthouse — 312 N. Spring Street, Los Angeles (complex civil)
U.S. District Court, Central District of California — 350 W. 1st Street, Los Angeles (federal court for diversity-jurisdiction cases)
Talk to a tractor-trailer trial lawyer before evidence cycles
No fee unless we win. Consultations are confidential.
What is an underride collision and why does it matter?
An underride collision is a crash in which a passenger vehicle passes beneath the trailer of a tractor-trailer at the rear or side. The federal regulation governing rear impact guards is 49 CFR §393.86, which incorporates FMVSS 223 and 224 by reference. Under FMVSS 223 the guard must withstand specified loads; FMVSS 224 specifies maximum height above ground and lateral coverage. When a guard is missing, corroded, mounted incorrectly, or below standard, the passenger-cabin intrusion that follows produces the catastrophic head and neck injuries that drive these cases.
What does jackknife mean in a tractor-trailer crash?
Jackknife describes the failure mode where the trailer swings forward of the tractor's center of mass, forming an angle similar to a folding pocketknife. It typically occurs when the drive axles of the tractor lock under braking faster than the steering axle, or when the trailer brakes lock while the tractor brakes do not. Investigation works through brake-balance test data, pre-trip inspection records, weather data, and the ELD's speed-and-input record. Reconstructionists then build the kinematic model to show whether the jackknife was foreseeable and avoidable given the conditions.
How long do I have to file an 18-wheeler accident lawsuit in California?
Two years from the date of injury under CCP §335.1. If a public entity is involved (a CalTrans roadway-design issue, a city-vehicle collision), the Government Code §911.2 six-month written-claim deadline applies and runs from the date of injury. Wrongful-death claims tied to the same crash carry the same two-year statute under CCP §335.1.
Is the trailer owner separately responsible from the tractor's company?
Often yes. In trucking, tractors and trailers are frequently owned by different entities. Federal lease-and-interchange regulations under 49 CFR Part 376 and California vicarious-liability rules can hold the trailer owner responsible alongside the motor carrier of record. The investigation includes a registered-owner search on both units and a review of any lease or interchange agreement.
Can I sue the manufacturer of the rear impact guard?
When the guard's design or manufacture caused or contributed to the crash injury, yes. The product-liability theory under California law (the Soule risk-benefit and consumer-expectation tests) can reach the trailer manufacturer, the rear-impact-guard component manufacturer, and any reseller in the distribution chain. The factual question turns on the engineer's inspection of the actual guard against the FMVSS 223 and 224 requirements.
How is fifth-wheel coupling failure investigated?
By inspection of the actual coupling and a mechanical engineer's analysis of wear patterns, lubrication condition, locking-jaw integrity, and kingpin engagement. The maintenance records under 49 CFR Part 396 are subpoenaed. The carrier's pre-trip inspection records under 49 CFR §392.7 are reviewed to determine whether the driver actually verified coupling engagement before departure or signed a perfunctory inspection without checking.
What are FMVSS 223 and FMVSS 224?
Federal Motor Vehicle Safety Standards 223 and 224 are the federal performance standards for rear impact guards on trailers. FMVSS 223 sets the strength requirements; FMVSS 224 sets the dimensional requirements (height above ground, distance from rear of trailer, width). Both are incorporated by reference into 49 CFR §393.86. A guard that fails to meet either standard is a non-compliant guard, and that non-compliance is admissible to prove the trailer was unsafe at the time of the crash.
What if the truck driver was working for an out-of-state motor carrier?
Diversity of citizenship between the plaintiff and the corporate defendant, combined with an amount in controversy above $75,000, supports federal-court jurisdiction. The case can be filed in or removed to the U.S. District Court, Central District of California in Los Angeles. The substantive law applied is California's, but the procedural and evidentiary rules are federal. Most large motor-carrier defendants prefer federal court; we plan around removal from the start.
Are punitive damages available for an 18-wheeler crash?
Yes, when the conduct meets the malice/oppression/fraud standard under Civil Code §3294. Pattern-and-practice violations of FMCSR rules, falsification of ELD logs, conscious disregard of brake or coupling defects, and impaired driving by a commercial driver have all supported punitive findings in California. The proof has to be clear and convincing.
How does the case account for my health insurance lien?
Most private health-plan policies have subrogation rights against personal-injury recoveries. Medicare conditional-payment recoveries and Medi-Cal liens under Welfare & Institutions Code §14124.71 behave differently from private-plan rights. Negotiating those liens down — sometimes by 50 percent or more — is a meaningful part of catastrophic-injury practice and increases the net recovery to the client.
Will my case settle or go to trial?
Most tractor-trailer cases settle, and the settlement value tracks what a reasonable jury would do at trial. The cases that try are typically those where the carrier disputes liability hard or refuses to pay within a reasonable jury range. We prepare every case for trial from day one; settlement, when it comes, comes at trial-grade value.
How does Burg & Brock charge for an 18-wheeler case?
Contingency. The firm advances investigation, expert, and litigation costs and earns a fee only if there is a recovery. The percentage is fixed in writing at the start under California Rule of Professional Conduct 1.5. There is no out-of-pocket cost during the case.
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