Semi-Truck Collision
A semi-truck collision in California activates the FMCSA regulatory framework — $750,000 minimum insurance under 49 CFR Section 387.9, hours-of-service limits under Part 395, and ELD data th...
Semi-Truck Collision guide →Legal Information Notice
This page provides general legal information about big rig / 18-wheeler accident claims in California. It does not provide legal advice. Consult a licensed California attorney for guidance specific to your situation.
Big Rig / 18-Wheeler Accident in California: Overview
Big rigs — 18-wheelers and other large combination vehicles — are subject to the strictest FMCSA regulatory requirements. At up to 80,000 pounds gross vehicle weight, a big rig collision with a passenger vehicle produces catastrophic injury severity. California's I-710, I-5, I-10, and Hwy 99 corridors are the highest-density big rig accident corridors in the western United States.
California commercial truck accident cases operate under a dual legal framework: FMCSA federal regulations that create specific duties and negligence per se theories; and California tort law governing damages, comparative fault (Li v. Yellow Cab Co., 1975), multi-defendant liability (Proposition 51), and the two-year statute of limitations (CCP Section 335.1). The combination of uncapped California damages and FMCSA-mandated commercial insurance makes truck accident cases substantially different from ordinary vehicle accident claims.
Who Is Liable After a Big Rig / 18-Wheeler Accident
Liability in big rig / 18-wheeler accident cases typically runs against multiple defendants simultaneously. The motor carrier bears vicarious liability under respondeat superior and direct negligence for FMCSA compliance failures. The truck driver bears personal liability. The truck owner, cargo shipper, maintenance company, and equipment manufacturers may each be named as additional defendants depending on the specific facts. California's pure comparative fault system allocates fault proportionally among all contributing parties.
Applicable FMCSA Regulations
The following FMCSA regulations are most commonly implicated in big rig / 18-wheeler accident cases. A violation of any applicable standard causally connected to the accident establishes negligence per se — satisfying the negligence element without further proof of unreasonable conduct.
- 49 CFR Part 395 — Hours of Service: 11-hour driving limit, 14-hour window, 30-minute break, 60/70-hour weekly limit
- 49 CFR Part 396 — Vehicle Inspection and Maintenance: pre-trip inspection, recordkeeping, out-of-service criteria
- 49 CFR Part 393 — Parts and Accessories: brake standards, tire requirements, cargo securement, lighting
- 49 CFR Part 391 — Driver Qualifications: CDL, medical certificate, drug testing, employment history
- 49 CFR Part 387 — Insurance: $750,000 minimum (general freight), $5,000,000 (hazmat)
- 49 CFR Part 382 — Drug and Alcohol Testing: pre-employment, random, post-accident testing
49 C.F.R. § 387.9 — Minimum Financial Responsibility
General freight carriers: $750,000 minimum liability insurance. Hazardous materials (listed substances): $5,000,000 minimum. These are federal minimums — most major carriers maintain substantially higher limits plus umbrella coverage.
Insurance Coverage in Big Rig / 18-Wheeler Accident Cases
FMCSA-regulated carriers must maintain minimum insurance of $750,000 for general freight or $5,000,000 for hazmat. In a serious big rig / 18-wheeler accident case, the full coverage stack includes the carrier's primary commercial auto policy, umbrella or excess coverage, the truck owner's policy if separate, and potentially the shipper's liability policy. All applicable policies must be identified and disclosed through the civil discovery process.
Damages Available After a Big Rig / 18-Wheeler Accident
California big rig / 18-wheeler accident victims can recover: all past and future medical expenses (no cap); lost wages and earning capacity; property damage; non-economic damages (pain, suffering, emotional distress, disfigurement, loss of enjoyment of life) — uncapped in California; and punitive damages under Civil Code Section 3294 for malice or conscious disregard. Commercial carrier insurance substantially exceeds personal auto policy limits, making full recovery more accessible in serious injury cases.
Statute of Limitations
Two years from the date of the accident under CCP Section 335.1. Government entity claims (Caltrans, public agency trucks): six months under Government Code Section 945.4. Minor victims: tolled until age 18 under CCP Section 352. ELD and EDR data must be preserved through immediate written demand to the carrier — long before the statute expires.
Critical Evidence in Big Rig / 18-Wheeler Accident Cases
- ELD records — Hours-of-service compliance at the time of the accident; preserve through immediate written demand to the carrier
- Event data recorder (EDR) — Vehicle speed, braking, and throttle data in the seconds before impact; download before truck is repaired
- Driver qualification file — CDL, medical certificate, employment history, drug tests; establishes negligent hiring claims
- Vehicle maintenance records — Pre-trip inspection logs, repair orders; establishes carrier knowledge of pre-existing defects
- Dispatch records — Load assignment, delivery schedule, communications with driver; establishes HOS pressure and dispatching conduct
- FMCSA inspection history — Prior roadside citations from the FMCSA SAFER database; establishes carrier safety culture
- Post-accident drug/alcohol test results — Required by 49 CFR Part 382 for serious accidents; establish impairment
- Dashcam and surveillance footage — From the truck if equipped, and from nearby businesses or traffic cameras
Frequently Asked Questions — Big Rig / 18-Wheeler Accident
Why are 18-wheeler accidents so much more dangerous than regular car accidents?
A loaded 18-wheeler weighs up to 80,000 pounds compared to 3,000-4,000 pounds for a passenger vehicle. This mass differential produces kinetic energy at collision that is 20 times greater than an equivalent-speed passenger vehicle collision. Even at moderate highway speeds, an 18-wheeler impact can produce traumatic brain injury, spinal cord injury, and fatal injuries that would not occur in a passenger-vehicle-to-passenger-vehicle collision at the same speed.
How many defendants can I sue after an 18-wheeler accident?
California big rig accident cases regularly name five or more defendants: the motor carrier, the truck driver, the truck owner (if leased separately), the trailer owner (if separate), the cargo shipper, and potentially brake or tire manufacturers. Each party may carry separate insurance. Identifying all defendants and preserving evidence against each is a critical early step.
What is the federal hours-of-service limit for big rig drivers?
FMCSA 49 CFR Part 395 limits property-carrying commercial drivers to 11 hours of driving in a 14-consecutive-hour window after 10 consecutive hours off duty, with a 60/70-hour weekly limit. ELD records from the truck establish hours-of-service compliance at the time of the accident — one of the most powerful evidence sources in big rig accident litigation.
How quickly do I need to preserve evidence after an 18-wheeler accident?
Immediately. ELD records and event data recorder (EDR) data are subject to carrier retention policies that can result in deletion within weeks to months. A written preservation demand must be sent to the carrier the same day as the accident if possible, and no later than within a few days. Physical evidence — brake components, cargo restraints — can be cleaned up or repaired within days.
What is a FMCSA 'serious violation' and how does it affect my case?
FMCSA's Compliance, Safety, Accountability (CSA) program rates carriers on safety metrics including accidents, inspections, and violations. A carrier with elevated CSA scores in brake system, driver fitness, or hours-of-service categories has a documented safety problem. Prior FMCSA citations for the specific violation that caused your accident are powerful evidence of the carrier's knowledge and support punitive damage claims.
How long do I have to file an 18-wheeler accident lawsuit?
Two years from the date of the accident under CCP Section 335.1. Government entity claims (Caltrans, public agency trucks): six months under Government Code Section 945.4. Occupational disease from hazmat exposure: discovery-based timeline under CCP Section 340.8.
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