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 truck underride crash claims in California. It does not provide legal advice. Consult a licensed California attorney for guidance specific to your situation.
Truck Underride Crash in California: Overview
Underride crashes occur when a passenger vehicle slides under the rear or side of a truck trailer, shearing off the vehicle's roof and causing catastrophic or fatal injuries. Federal Motor Vehicle Safety Standard 223 requires rear underride guards on most trailers, but side guards are not federally required. Defective or inadequate underride guards are the basis for product liability claims against trailer manufacturers alongside negligence claims against the carrier.
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 Truck Underride Crash
Liability in truck underride crash 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 truck underride crash 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 Truck Underride Crash Cases
FMCSA-regulated carriers must maintain minimum insurance of $750,000 for general freight or $5,000,000 for hazmat. In a serious truck underride crash 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 Truck Underride Crash
California truck underride crash 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 Truck Underride Crash 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 — Truck Underride Crash
What is a truck underride crash and why is it so deadly?
An underride crash occurs when a passenger vehicle slides under the rear or side of a truck trailer. In a rear underride, the passenger vehicle's front end slides under the trailer bed, often shearing off the roof at the windshield — producing decapitation-type injuries. The physics are particularly lethal because the structural protection of the passenger compartment — the roof, A-pillars, and windshield — is removed before the occupants are restrained by airbags and seatbelts.
Are rear underride guards legally required on trucks?
Federal Motor Vehicle Safety Standard 223 (49 CFR Part 571.223) requires rear underride guards on most large trailers manufactured after 1998. However, NHTSA's FMVSS 223 standards have been criticized as too permissive — crash tests show that many 'compliant' guards still allow dangerous underride at highway speeds in offset and angled crashes.
Can I sue the trailer manufacturer for an inadequate underride guard?
Yes. Under California's Greenman v. Yuba Power Products (1963) strict product liability doctrine, a trailer manufacturer is liable for: manufacturing defects (defective guard from the production line); design defects (guard that meets minimum federal standards but is still unreasonably dangerous); and failure to warn (inadequate inspection or replacement guidance). Meeting FMVSS 223 minimums is not an absolute defense in California.
Are side underride guards required on trailers?
No federal requirement currently mandates side underride guards. The STOP Underrides Act has been introduced in Congress multiple times without passage. In California civil litigation, the absence of side underride guards may be evidence of a design defect if the manufacturer was aware of the hazard and a feasible alternative design existed, under the risk-utility test from Barker v. Lull Engineering (1978).
What damages are available after a truck underride crash?
Underride crashes frequently produce catastrophic or fatal injuries. California allows full recovery of: all economic damages (lifetime medical care, rehabilitation, assistive technology, lost earning capacity — no cap); non-economic damages (pain, suffering, disfigurement, loss of enjoyment of life — no cap); and wrongful death damages under CCP Section 377.60. Product liability claims against the trailer manufacturer add a significant additional recovery avenue.
How long do I have to file an underride crash lawsuit?
Two years from the date of the accident under CCP Section 335.1 for all claims. For wrongful death cases, two years from the date of death. Critically, both the truck's underride guard and the passenger vehicle must be preserved as physical evidence before either is repaired or destroyed — contact a California attorney immediately.
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