Commercial Truck Insurance Coverage in Santa Clarita

By Payam Soliemanzadeh, Founder and President

Key takeaways

• Federal trucking minimums start at $750,000; many Santa Clarita crashes involve higher limits.
• California now requires 30/60/15 liability since January 2025 under SB 1107.
• Henry Mayo Newhall Hospital treats severe injuries from Interstate 5 and Route 14 collisions.
• File at Santa Clarita Courthouse within two years, or six months for government claims.

Santa Clarita sits at the intersection of Interstate 5 and State Route 14, making it a critical corridor for freight moving between the Antelope Valley and the Port of Los Angeles. Commercial trucks traveling these routes carry federal insurance minimums far exceeding ordinary passenger-vehicle coverage, and identifying every applicable policy after a crash is essential to protecting your recovery.

When a semi-truck strikes your vehicle on Valencia Boulevard or Soledad Canyon Road, the question is not whether insurance exists—it is which policies apply, in what order, and how quickly you must act. This guide explains the coverage layers that govern every Santa Clarita truck accident claim filed in Los Angeles County.

Federal Motor Carrier Act insurance requirements

The Federal Motor Carrier Safety Administration mandates minimum liability coverage for interstate commercial vehicles based on cargo type. General freight carriers must carry at least $750,000; hazardous-materials haulers require $5 million. These federal minimums exist to protect the public from the catastrophic damage an 80,000-pound vehicle can inflict on Interstate 5 or any other highway.

The trucking company's policy typically covers the driver, the vehicle, and the entity with operating authority. Liability attaches when the truck is in service, which includes loading, driving, and certain repair activities. Because the federal floor exceeds California's minimum by an order of magnitude, truck-accident victims often have access to substantially more coverage than in a passenger-car collision.

California liability and UM/UIM coverage

California law requires all motor vehicles—including commercial trucks registered in-state—to carry liability coverage. As of January 1, 2025, SB 1107 raised the state minimum to $30,000 per person, $60,000 per accident for injury, and $15,000 for property damage. Trucking fleets typically carry excess or umbrella policies that layer millions above the federal floor, especially when they operate coast-to-coast routes through Santa Clarita.

Your own uninsured/underinsured motorist coverage protects you when the at-fault carrier lacks adequate limits or when the driver is uninsured. Insurers must offer UM/UIM; it may be declined only in writing. If a dump truck on Bouquet Canyon Road carries only the federal minimum and your injuries exceed $750,000, your UM/UIM policy may cover the gap, making it a critical second layer in catastrophic cases.

Additional coverage sources in multi-party crashes

Commercial truck crashes often involve multiple defendants—the driver, the motor carrier, the leasing company, the shipper, and the entity responsible for maintenance. Each may carry separate liability policies, and California's pure comparative negligence rule allows recovery even if you share fault. A truck striking your car on State Route 14 may trigger the carrier's primary policy, the owner's non-owned-auto coverage, and the shipper's contingent liability endorsement.

When a government entity is involved—for example, a municipal truck or a contractor hauling for Caltrans—you must file an administrative claim under Gov. Code §911.2 within six months. Missing that deadline forfeits your right to sue, even though the two-year CCP §335.1 clock would otherwise apply. Identifying every defendant and every policy early preserves your access to all available coverage.

Local details

Santa Clarita truck-accident cases are filed in the North Valley District of Los Angeles Superior Court at Santa Clarita Courthouse, 23747 West Valencia Boulevard, Santa Clarita, CA 91355. Interstate 5 and State Route 14 carry heavy commercial traffic through the city, and crashes on Valencia Boulevard, Soledad Canyon Road, and Bouquet Canyon Road often require treatment at Henry Mayo Newhall Hospital, a Level II trauma center at 23845 McBean Parkway in Valencia. Severe injuries may extend your claim into multiple policy layers.

You have two years under CCP §335.1 to file a personal injury lawsuit; claims against a government entity require a tort claim within six months under Gov. Code §911.2. Preserving evidence—especially electronic logging device data and the carrier's insurance certificate—starts the day of the crash. Our truck accident attorneys regularly handle cases in Los Angeles County and can identify every coverage source available after a Santa Clarita collision.

Frequently Asked Questions

Does the truck driver's personal auto insurance apply?

Usually not. When a driver operates a commercial vehicle in the scope of employment, the carrier's commercial policy is primary. Personal policies typically exclude coverage for business use. The federal Motor Carrier Act requires the carrier to maintain continuous liability coverage, so the driver's personal insurance rarely comes into play in a Santa Clarita truck accident.

What if the trucking company is based out of state?

Federal law requires interstate carriers to designate a process agent in every state where they operate. California's long-arm jurisdiction allows you to sue an out-of-state carrier in Los Angeles County if the crash occurred here. The carrier's federally mandated insurance follows the vehicle, so coverage applies even when the company's headquarters is across the country.

Can I recover if I was partially at fault?

Yes. California follows pure comparative negligence: your recovery is reduced by your percentage of fault, but not eliminated. If a jury finds you 30 percent responsible for a collision on Interstate 5, you may still recover 70 percent of your damages from the truck driver and the carrier, assuming liability is proven.

How do I find out what insurance the truck carries?

A carrier's MCS-90 endorsement and insurance certificate are on file with the FMCSA and may be requested through discovery once litigation begins. Police reports sometimes include policy numbers. Early investigation—including a preservation letter to the carrier—ensures that coverage documents are not misplaced or altered before your claim proceeds.

Related reading

• Truck Accident Practice Area
• Santa Clarita Truck Accident Overview
• Common Truck Accident Injuries in Los Angeles: Symptoms, Care, and Claims
• Who Is Liable for a Woodland Hills Truck Accident Besides the Driver?
• Why Truck 'Black Box' Data Disappears in Long Beach Cases

Attorney advertising. This article is for general information only and is not legal advice. Reading it does not create an attorney-client relationship. Prior results do not guarantee a similar outcome.