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Los Angeles jackknife truck accident lawyer
Jackknifes happen when the trailer overtakes the tractor. The legal case turns on brake-system inspection records, driver hours, and the FMCSA brake-performance standard at 49 CFR §393.42.
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What a jackknife case actually involves
A jackknife collision happens when the trailer of a tractor-trailer combination loses traction relative to the tractor and swings out, forming an angle to the cab. The dynamics are well understood by reconstructionists: hard braking with the drive axles still rolling causes the trailer to come around; sudden steering input on a slick or uneven surface can trigger the same motion. The result is a multi-lane sweep that often involves multiple vehicles and a high fatality rate per incident.
The case theory in a Los Angeles jackknife case starts with the FMCSA brake-performance standard at 49 CFR §393.42, which requires every commercial motor vehicle to have brakes acting on all wheels, capable of stopping the vehicle within specific deceleration parameters. We pull the post-collision DOT inspection report — which usually documents brake-stroke measurements that were out of adjustment — and the carrier's pre-trip and ninety-day inspection records under 49 CFR Part 396.
Hours of Service (49 CFR §395.3) and the ELD records that document driver activity are the second category. A driver who jackknifes after thirteen straight hours behind the wheel is presenting a different liability picture than one in the first hour of a fresh shift. The ELD download is part of the carrier's required records and is usually obtainable by litigation hold within the first thirty days.
On the medical side, jackknife cases produce severe injury patterns because the secondary impacts often involve passenger vehicles striking the side of the trailer at highway speeds — an underride or sideswipe collision that is uniquely dangerous. Spinal injuries, severe TBI, multi-system trauma, and wrongful-death cases dominate the Los Angeles practice.
Burg & Brock has handled tractor-trailer cases out of the Sherman Oaks headquarters, the Bakersfield office (close to the I-5 corridor where many of these cases originate), and the Visalia and Modesto offices. The firm tries cases. Trucking carriers and self-insured retentions on Class 8 cases settle differently with firms that have filed in LA County and Central Valley courthouses.
Your rights under California law
California and federal law together set the duties for tractor-trailer carriers. California Vehicle Code applies on top of the federal FMCSA framework.
- 49 CFR Part 393 — FMCSA parts and accessories — including the brake-performance standard at §393.42 that drives most jackknife cases.
- 49 CFR Part 395 — Hours of Service — including the eleven-hour driving limit, fourteen-hour on-duty window, and thirty-minute break rule under §395.3.
- 49 CFR Part 396 — Inspection, repair, and maintenance — including the pre-trip inspection requirement and the ninety-day periodic inspection.
- California Vehicle Code §34501.12 — Biennial Inspection of Terminals (BIT) program for California-based carriers.
- California Vehicle Code §22350 — basic speed law — applies to commercial drivers, including conditions like rain, fog, and curves.
- California Code of Civil Procedure §335.1 — two-year statute of limitations.
- California Civil Code §3294 — punitive damages on clear and convincing evidence of malice — relevant when carrier records show conscious-disregard maintenance or HOS practices.
Diaz v. Carcamo (2011) 51 Cal.4th 1148 controls the negligent-hiring and negligent-entrustment framework against carriers when the employer has admitted respondeat superior. Marquez v. Specialty Truck Parts and Rodriguez v. McDonnell Douglas Corp. (1978) 87 Cal.App.3d 626 set the framework for damages in catastrophic-injury cases.
Camp v. Jeffer, Mangels, Butler & Marmaro and other California decisions on spoliation of evidence are relevant when carriers fail to preserve ELD data or vehicle records after notice — the spoliation-instruction theory becomes available.
How Burg & Brock works your case
Jackknife cases are evidence-heavy and time-perishable. The carrier's records do not stay accessible without a litigation hold; the ELD data has retention windows.
- Carrier litigation hold. Within seventy-two hours, we send a litigation-hold letter to the carrier covering ELD data, dispatch records, driver qualification file (DQF), maintenance records on the tractor and trailer, post-trip inspection reports, the driver's previous HOS, and any internal incident report.
- DOT post-collision inspection. The CHP Commercial Vehicle Section or DOT inspector's post-collision inspection report typically documents brake-stroke measurements, tire condition, lighting, and other regulatory items. We obtain the report and the inspector's notes.
- ELD download and HOS analysis. An expert reviews the driver's ELD activity for the seventy-two hours before the collision against the eleven-hour, fourteen-hour, and sixty/seventy-hour rolling limits.
- Reconstruction and biomechanical work. Reconstructionist for impact dynamics, brake-event analysis, and trailer-swing geometry; biomechanical for injury-mechanism causation.
- Insurance and carrier-asset analysis. Federal MCS-90 endorsement minimum is $750,000 for general freight; many carriers carry $1M to $5M primary plus excess. Self-insured retentions and corporate-affiliate analysis often expand the recoverable pool.
- Demand and litigation. Demand structured to the policy stack and any punitive-damages exposure; filing in LA County Superior Court or, where parties are diverse, federal court.
Operational note: large-truck carriers run to active rapid-response teams within hours of a serious incident. Their reconstructionists and lawyers are at the scene before the plaintiff has retained counsel. The asymmetry favors the firm that moves first.
Common jackknife collision profiles in Los Angeles
I-5 jackknifes near the Grapevine. Tejon Pass descents on I-5 produce predictable brake-failure cases when carriers run inadequately maintained or overheated brake systems.
I-405 jackknifes in heavy traffic. Sudden braking in stop-and-go produces trailer-swing on slick surfaces or with uneven brake adjustment.
I-10 westbound jackknifes. Cajon Pass descents and the long downgrades produce thermal brake-fade cases.
I-110 and I-710 jackknifes. Port-of-LA-area drayage cases on the harbor freeways.
Highway 101 jackknifes. Northbound climbs and descents through the Cahuenga Pass and into the Valley.
Wet-weather jackknifes. Reduced traction in California's atmospheric-river events; a carrier that does not adjust speed for conditions under CVC §22350 has primary fault.
Construction-zone jackknifes. Sudden lane shifts and slowdowns in active work zones — Caltrans signage and lane-control protocols become evidence.
Underride jackknife collisions. Passenger vehicle goes under the trailer side or rear during the trailer swing — most lethal subcategory.
Fatigued-driver jackknifes. HOS-violation cases where ELD data shows the driver exceeded eleven hours or fourteen-hour window.
Brake-out-of-adjustment jackknifes. Pre-trip inspection failures and ninety-day inspection gaps under 49 CFR Part 396.
Common causes
- Brake-stroke out of adjustment in violation of 49 CFR §393.42 and the carrier's maintenance program.
- Excessive speed for descending grades on I-5 (Grapevine), I-15 (Cajon Pass), or I-10 in violation of CVC §22350.
- Driver fatigue in violation of FMCSA Hours-of-Service limits at 49 CFR §395.3.
- Inadequate pre-trip inspection in violation of 49 CFR §396.13.
- Tire condition — under-inflated, mismatched, or worn tires affecting traction.
- Improper load distribution — top-heavy or unbalanced loads affecting trailer dynamics.
- Driver inexperience on California mountain grades.
- Failure to use engine-brake or auxiliary-brake systems on long descents.
Liability theories
Jackknife liability typically reaches multiple defendants. The standard analysis includes:
- The driver — primary negligence under Civil Code §1714 and the applicable Vehicle Code sections.
- The motor carrier — respondeat superior, negligent hiring, training, supervision, and entrustment under Diaz v. Carcamo.
- The shipper or broker if they imposed unrealistic delivery deadlines causing HOS violations or speeding.
- The trailer or component manufacturer for any brake-system or ABS defect under Greenman v. Yuba Power.
- The maintenance contractor if the brake adjustment or tire condition reflects negligent service.
- Caltrans for dangerous-condition theories on roadway design, signage, or run-off-area cases under Government Code §835.
Federal MCS-90 endorsement provides $750,000 minimum for general freight, $1M for hazmat, $5M for certain hazmat — but the actual policy and umbrella stack often goes much higher. Discovery on the carrier's full insurance schedule is part of standard early litigation.
How damages break down
Economic damages on a jackknife case typically include surgical and rehabilitation costs, future medical care for permanent injuries, lost earnings, lost earning capacity reduced to present value, and household services. Catastrophic injuries — paraplegia, quadriplegia, severe TBI — drive the case value into seven figures and often eight.
Non-economic damages cover pain and suffering, disfigurement, loss of enjoyment of life, and loss of consortium. Wrongful-death heirs recover under CCP §377.60 for loss of comfort, society, and support.
Punitive damages under Civil Code §3294 are a serious consideration in jackknife cases when the carrier's records show conscious-disregard practices — repeated brake violations across the fleet, documented HOS-falsification patterns, or knowing entrustment of an unqualified driver. Punitive exposure changes settlement dynamics significantly.
Reported settlement and verdict ranges
| Case profile | Reported range | Drivers |
|---|
| Jackknife collision, single-vehicle plaintiff, multiple fractures | $240,000 – $850,000 | Liability supported by inspection report, surgical course, partial impairment. |
| Jackknife with mild TBI | $525,000 – $1.4 million | Documented LOC, neuropsych testing, cognitive deficits. |
| Catastrophic spinal-cord injury jackknife case | $3.5 million – $12+ million | Para or quadriplegia, life-care plan, future-care economics. |
| Underride jackknife wrongful-death | $2.8 million – $10+ million | CCP §377.60 heirs, decedent earning capacity, punitive exposure. |
| Multi-vehicle jackknife pile-up | $1.5 million – $8+ million per claimant | Multiple-claimant case, policy-stack discovery, potential punitive exposure. |
Past results do not guarantee future outcomes. Each case is evaluated on its own facts and applicable law.
Why work with Burg & Brock
Burg & Brock has tried tractor-trailer cases for more than two decades. The litigation-hold templates, the FMCSA-records subpoena package, and the ELD-data analysis are standardized at this point.
The firm files in LA County, Kern County, Tulare County, and Stanislaus County — the geographic spread that matches where Class 8 cases occur on the I-5 corridor and the connecting highways.
Contingency fee. No fee unless we recover. Free consultation.
Steps after a Los Angeles jackknife collision
- Get medical care first. ER evaluation at the closest trauma facility. Document head impact, spinal injury, internal injuries.
- Photograph the scene if you can. Position of the tractor and trailer, lane markings, brake-skid marks, vehicle damage.
- Get the carrier name and DOT number. On the side of the cab. Plus the trailer ID and any visible carrier markings.
- Get witnesses' contact info. Other drivers, CHP officers, any cleanup-crew personnel who were at the scene.
- Do not give a recorded statement. The carrier's adjuster will call within twenty-four hours. Refer to counsel.
- Save the official report. Request the CHP traffic-collision report and the post-collision DOT inspection.
- Call a lawyer in the first ninety-six hours. ELD retention windows close fast. Litigation-hold letters must go out before the records are routinely overwritten.
Where these cases are filed
Most LA County jackknife cases are filed in Los Angeles County Superior Court — Stanley Mosk Courthouse for unlimited civil. I-5 Grapevine cases sometimes venue in Kern County (Bakersfield) where the southern half of the Tejon Pass falls. I-15 Cajon Pass cases venue in San Bernardino County. Federal-court diversity jurisdiction comes into play when the carrier is out-of-state and the amount in controversy exceeds $75,000.
Burg & Brock has filed in every California county where Class 8 cases occur on the I-5, I-10, I-15, US-101, and CA-99 corridors.
Frequently asked questions
What causes a tractor-trailer to jackknife?
A jackknife happens when the trailer loses traction relative to the tractor and swings out forming an angle to the cab. The most common causes are hard braking with the drive axles still rolling on a wet or slick surface, sudden steering input on a curve or grade, mismatched brake-stroke between tractor and trailer (a violation of 49 CFR §393.42), and excessive speed for descending grades. The carrier's pre-trip inspection records and the post-collision DOT inspection are the primary evidence.
Who pays for the damages — the driver or the carrier?
Both, typically. The carrier is liable under respondeat superior because the driver was on the job. The carrier's liability policy applies; in catastrophic cases the umbrella and excess policies stack on top. Federal MCS-90 endorsement provides minimum coverage for interstate carriers — $750,000 for general freight, $1M for non-bulk hazmat, $5M for certain hazmat. Most actual carrier policies go significantly higher.
How long do I have to file a jackknife case?
Two years from the date of injury under
CCP §335.1. Wrongful-death heirs have two years under the same statute. If a public entity contributed (Caltrans, City of LA), a six-month written-claim deadline under Government Code §911.2 applies.
What is the FMCSA brake-stroke standard at 49 CFR §393.42?
Federal regulation requires every commercial motor vehicle to have brakes acting on all wheels capable of stopping the vehicle within deceleration parameters specified at
49 CFR Part 393. The companion regulation at §393.47 specifies brake-stroke chamber sizes and adjustment requirements. Brakes "out of adjustment" are a documented and citable violation in roadside and post-collision inspections.
What is an ELD and why does it matter in a jackknife case?
An Electronic Logging Device records driver activity — driving time, on-duty not-driving, off-duty, and sleeper-berth status — and replaces the old paper logs as of December 2017 (federal mandate). The ELD download for the seventy-two hours before the collision tells the story of whether the driver was within Hours-of-Service limits at
49 CFR Part 395 — eleven-hour driving limit, fourteen-hour on-duty window, sixty/seventy-hour rolling limit.
Can I get punitive damages against a trucking company?
Yes, if the conduct supports it.
Civil Code §3294 requires clear and convincing evidence of malice, oppression, or fraud. California cases have supported punitive findings against carriers with documented patterns of HOS falsification, repeated brake-system violations, knowing entrustment of unqualified drivers, and conscious-disregard records on prior incidents. The carrier's safety-history records (FMCSA SMS, prior CHP inspections) are part of the evidence.
What if the truck driver was on his phone at the time of impact?
A serious aggravating factor.
49 CFR §392.82 prohibits commercial drivers from using a hand-held mobile telephone while operating a commercial vehicle.
CVC §23123 and §23123.5 add the California cell-phone prohibitions. We subpoena the carrier's and driver's phone records on the routes that lead up to the impact.
Was the carrier required to inspect the brakes?
Yes.
49 CFR Part 396 requires daily pre-trip inspections, post-trip inspections, and a minimum ninety-day "periodic inspection" of the entire vehicle. California-based carriers also undergo BIT (Biennial Inspection of Terminals) under
CVC §34501.12. The records of all of these inspections are obtainable by litigation hold.
What if the trailer was owned by a different company than the tractor?
Common in interlining and drop-and-hook operations. We pursue all parties — tractor owner, trailer owner, motor carrier of record, and the broker who arranged the load — under joint-and-several liability theories. Each entity's contribution to the failure is a fact question, and federal law often imposes vicarious liability across the operating relationship.
How long does a tractor-trailer case take?
Typically eighteen to thirty-six months for serious cases, longer if tried. The driver is the medical course and the discovery work — Class 8 cases are document- and deposition-heavy, with carrier-side records routinely running into thousands of pages.
Where is my jackknife case filed?
LA County Superior Court for cases occurring in LA County. Adjacent counties (Kern, San Bernardino, Ventura, Riverside, Orange) for cases on the corridor highways. Federal-court diversity jurisdiction applies when the carrier is out-of-state and the amount in controversy is over $75,000 — sometimes the federal forum is the better tactical choice.
How much does it cost to hire Burg & Brock?
Nothing up front. Contingency fee. Case costs (expert fees, deposition transcripts, court filings) are advanced by the firm and reimbursed from the recovery.
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Talk to a Burg & Brock attorney today
No fee unless we recover. Free consultation. Seven California offices, including Sherman Oaks (HQ), Glendale, Beverly Hills, Irvine, Bakersfield, Visalia, and Modesto.
Call (888) 528-8595
Burg & Brock office locations: Sherman Oaks (HQ) — 4554 Sherman Oaks Avenue, Unit A100, Sherman Oaks, CA 91403 · Glendale — 633 N. Central Avenue, Suite 200, Glendale, CA 91203 · Beverly Hills — 9701 Wilshire Boulevard, Suite 1000, Beverly Hills, CA 90212 · Irvine — 7545 Irvine Center Drive, Suite 200, Irvine, CA 92618 · Bakersfield — 4900 California Avenue, Tower B, 2nd Floor, Bakersfield, CA 93309 · Visalia — 2300 W Whitendale Avenue, Visalia, CA 93277 · Modesto — 1015 12th Street, Suite 4, Modesto, CA 95354. Phone: (888) 528-8595.
