Ontario Motorcycle Accident Lawyers

If a motorcycle crash caused by someone else in Ontario leaves you with medical bills, lost income, or a serious injury, you may have the right to pursue compensation through a personal injury claim. Under California law, someone who fails to exercise reasonable care to prevent harm may be legally liable for resulting losses.

Ontario motorcyclists on Holt Boulevard, Archibald Avenue, and the I-10/I-15 interchange face one of the Inland Empire’s most demanding traffic environments: heavy commercial trucks, multi-lane arterials, and freight corridors tied to Ontario International Airport cargo operations that stay active around the clock. They also face a greater risk of injury. Unlike vehicle occupants, riders often lack physical protection in a collision.

Arash Law represents injured riders, their passengers, and surviving family members throughout San Bernardino County. Our California motorcycle accident attorneys have recovered over $1 billion for clients throughout the state. We know the roads, agencies, and courts that can shape an Inland Empire motorcycle claim.

Call (909) 259-4700 (local Ontario line) or (888) 488-1391 (24-hour line) to schedule a free case evaluation.

Call: (909) 259-4700 (Ontario local)
(888) 488-1391 (24-hour line)

Reviewed by: Arash Khorsandi, Esq., California State Bar #249405, admitted 2007, last reviewed August 2026

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Table of Contents

What Makes Motorcycle Accident Claims Different In Ontario?

According to the California Office of Traffic Safety (OTS), Ontario reported 941 people killed and injured in traffic crashes in 2023. Around 45 of those victims were killed and injured in motorcycle accidents. The fact that the city sits at the junction of Interstate 10 (I-10) and 15 (I-15), two of the Inland Empire’s highest-volume freight and commuter corridors, may contribute to these figures. Other local factors may explain the risk of motorcycle crashes in Ontario, as well as what makes the resulting claims here distinct from those in other California cities:

I-10 / I-15 Interchange And Freight Corridors

The I-10/I-15 interchange connects commercial traffic from outside the city to the Ontario International Airport and to major surface streets, including Euclid Avenue, Milliken Avenue, Haven Avenue, and Vineyard Avenue. That means that, at this interchange, heavy commercial trucks serving the city’s warehouse and logistics sector share on-ramps and off-ramps with commuter traffic every day. This setup may increase the risk of motorcycle accidents.

A motorcycle caught between a merging semi and a concrete barrier has little room for error. When a truck company’s driver violates federal hours-of-service or maintenance rules under 49 C.F.R. Parts 391, 395, and 396, that violation can become central evidence in a liability claim. The California Highway Patrol (CHP) has primary jurisdiction over crashes that occur here.

Holt Boulevard And Other Surface-Street Arterials

Holt Boulevard is a major east-west commercial corridor. Other important surface streets, including Archibald Avenue, 4th Street, Philadelphia Street, and Euclid Avenue, carry some of Ontario’s heaviest city street traffic. Riders face side-swipe risks along these routes.

Left-turn collisions can occur when a driver crossing oncoming lanes fails to yield to an approaching motorcycle. The Ontario Police Department (OPD) investigates crashes on these surface streets and holds the official collision reports.

Event Traffic At Toyota Arena And The Ontario Convention Center

Large events at Toyota Arena and the Ontario Convention Center can increase traffic volume on surrounding surface streets. That may increase the risk of accidents for riders in the area. In particular, they may have to navigate the unpredictable movements of private and rideshare vehicles that drop off and pick up passengers at these venues.

Road Construction And Pavement Hazards

The City of Ontario maintains an extensive street network. Active construction zones, such as road improvement projects, can create lane shifts, uneven pavement, and reduced sight lines. Poorly maintained traffic infrastructure, such as malfunctioning traffic signals, can similarly create dangerous conditions.

These hazards can affect motorcyclists far more severely than drivers in enclosed vehicles, and they may warrant a claim against the City. Identifying public entity liability early is crucial because government claims are subject to stricter, shorter filing deadlines than motorcycle accident claims against private parties.

Court Venue: San Bernardino Justice Center

Limited and unlimited civil matters that arise in Ontario are filed and heard at the San Bernardino Justice Center at 247 West 3rd Street, San Bernardino.

Knowing where to file matters for scheduling, filing deadlines, and local court practice. Court hours are Monday through Friday, 8:00 a.m. to 4:00 p.m. Parties should confirm the assigned courthouse and courtroom through the court’s current case information before appearing.

Data Transparency Note: This discussion leverages the latest traffic crash numbers from the OTS for Ontario, California. These figures count people killed or injured in crashes, not the total number of crashes overall. They should not be interpreted as measures of motorcycle accident exposure on specific corridors, such as the I-10 or I-15. These numbers will be updated as new data becomes available.

Who Can File A Motorcycle Accident Claim In Ontario?

In Ontario, injured riders, passengers, surviving family members, and third parties involved in the same crash may each file a motorcycle accident claim under California law. If you are unsure whether you qualify, a conversation with an attorney may help clarify your eligibility and the legal options available to you.

The following parties may have a claim after an Ontario motorcycle accident:

Injured Rider

The motorcyclist who was hurt is the primary claimant in most cases, whether the crash happened on Holt Boulevard, the I-10 on-ramp at Milliken Avenue, or any other Ontario road.

Injured Passengers

Anyone riding on the motorcycle who was hurt may file a claim regardless of who caused the crash.

Pedestrians, Bicyclists, and Occupants of Other Vehicles

Third parties injured in the same collision, whether struck on Euclid Avenue or a nearby crosswalk, may have their own claims under California negligence law.

Registered Owner of the Motorcycle

If the bike belongs to someone other than the rider, that owner may file for property damage.

Spouse or Registered Domestic Partner

A spouse or registered domestic partner may file an independent loss of consortium claim under California law. This claim would allow them to seek compensation for the loss of love, companionship, comfort, affection, and moral support caused by the injured rider’s condition.

Surviving Family Members

If the rider died, surviving family members may bring a wrongful death claim. See the “Wrongful Death” entry in the Recoverable Damages section below for eligibility, recoverable damages, and the filing deadline.

Common Injuries In Ontario Motorcycle Accidents

The most common injuries in Ontario motorcycle accidents include traumatic brain injuries, spinal cord damage, broken bones, road rash, and psychological injuries. The severity of these injuries can be worsened by the motorcyclist’s lack of physical protection, especially after crashes on high-speed corridors like the I-10 or multi-lane city streets like Archibald Avenue.

Each injury type is detailed below:

Traumatic Brain Injuries (TBIs)

A hard impact can damage the brain even when a rider wears a helmet. TBIs can cause memory loss, difficulty concentrating, personality changes, and permanent loss of earning capacity.

Spinal Cord Injuries

A crash or fall at freeway speeds can damage the spinal cord. This may cause partial or full paralysis and lifelong loss of independence.

Multiple Broken Bones

Arms, legs, wrists, ribs, and collarbones are frequently fractured in motorcycle crashes. Many injured riders undergo surgery with metal hardware and then spend months in rehabilitation.

Road Rash

Riders may tear their skin and the underlying tissue if they fall on and slide across the pavement on Holt Boulevard or a freeway shoulder. If not treated properly, road rash can cause infection, permanent scarring, and nerve damage.

Soft Tissue and Joint Injuries

Ligament tears, tendon damage, and rotator cuff injuries are common when a rider is thrown or braces for impact.

Psychological Injuries

Post-traumatic stress disorder (PTSD), anxiety, and fear of riding are documented outcomes after serious motorcycle crashes and are compensable under California law.

Medical records, diagnostic imaging, therapy notes, work restrictions, and future care recommendations collectively document the full impact of a crash across all injury types. Lawyers for motorcycle accidents in Ontario can use these records to show insurers and juries the true scope of your losses, not only what the emergency room treated on the day of the crash.

What Damages Can You Recover From A Motorcycle Accident In Ontario?

If another party’s negligence caused your crash, you may seek compensation for two broad categories of damages: economic and non-economic. Wrongful death damages may be available after fatal motorcycle accidents. Finally, in limited circumstances, a court may award punitive damages.

Economic damages refer to your quantifiable financial losses:
Non-economic damages cover the personal harm the crash caused:

Under Proposition 213 (CIV § 3333.4), an uninsured motorcycle owner, or a rider who cannot establish the financial responsibility required by law, generally cannot recover non-economic damages after a motorcycle crash. However, exceptions may apply for motorcycle owners injured by a driver who was driving under the influence and was convicted of that offense.

Punitive damages are only available in rare cases where the at-fault party acted with malice, oppression, fraud, or conscious disregard for others’ safety. The San Bernardino County Superior Court may award them when a defendant’s conduct goes beyond negligence. For example, an Ontario DUI accident victim lawyer may be able to pursue punitive damages if the at-fault driver was intoxicated and had a prior DUI conviction on their record. Ordinary negligence alone does not qualify.

Wrongful death damages may be available to eligible family members if the crash was fatal. Those claimants may include a surviving spouse, registered domestic partner, children, and certain other persons identified by statute (CCP § 377.60). Available damages under CCP § 377.61 include:

  • Loss of financial support.
  • Loss of companionship and guidance.
  • Funeral and burial costs.

Insurance Coverage That May Apply To Your Ontario Motorcycle Claim

More than one insurance policy may cover a motorcycle crash in Ontario. Identifying all available coverage early is essential. Insurers move quickly, and an unrepresented rider may settle before the full scope of their injuries is clear.

California requires all drivers to carry liability insurance. Under California Vehicle Code (VEH) § 16056 as amended by SB 1107 (effective January 1, 2025), the current minimum limits are:

  • $30,000 per person.
  • $60,000 per accident for bodily injury.
  • $15,000 for property damage.

Those minimums are rarely enough to cover serious motorcycle injuries. In these cases, an attorney may assess whether you may be able to seek compensation from other policies, including:

  • Your Own Auto Insurance Policy. If the following coverages are included, you may be able to file against your own:
    • Uninsured/Underinsured Motorist (UM/UIM) Coverage. UM/UIM coverage pays for your losses when the at-fault driver has no insurance, has inadequate limits, or flees the scene. Under California Insurance Code § 11580.2, insurers must offer UM/UIM coverage. Still, policyholders may reject it in writing, so ask your insurance agent if you’re unsure whether it’s available in your case.
    • Medical Payments (MedPay). Pays medical expenses after a crash regardless of fault. Because California does not require Personal Injury Protection (PIP) for motorcycles, MedPay is often the primary source of immediate medical coverage for riders.
  • Commercial and Rideshare Policies. If the at-fault driver was on the job or making a delivery, a commercial policy layer may apply. If the driver was working for a transportation network company such as Uber or Lyft, California’s rideshare insurance requirements may determine the available coverage based on the driver’s activity and status at the time of the crash. Delivery and other gig-platform drivers may be subject to different insurance arrangements. An attorney can identify the correct coverage based on the specifics of your crash.
  • Truck Company Policies. Commercial trucking operations serving Ontario’s logistics sector may be required to carry higher minimum liability limits under federal motor carrier rules. Those policies can be substantial and may be the primary source of recovery in a truck-involved crash.

After a crash, the at-fault driver’s insurer may contact you quickly and request a recorded statement. That statement can be used to reduce or deny your claim. Speaking with an attorney before giving any statement protects your legal position.

How An Ontario Motorcycle Accident Claim Moves Forward

A claim for a motorcycle accident often involves a crash investigation, an insurance review, settlement negotiations, and, in some cases, litigation. Here’s how the process may look in Ontario:

  1. Investigate the Crash: Gather the available OPD or CHP collision report, photos, witness information, medical records, and footage from nearby Ontario businesses, warehouses, or logistics facilities.
  2. Identify Liability and Coverage: Determine whether a driver, employer, trucking company, delivery business, or public entity shares responsibility, particularly in crashes near I-10, I-15, SR-60, or Ontario International Airport.
  3. Document Losses: Keep medical bills, treatment records, lost income documentation, and motorcycle repair or replacement estimates related to the crash.
  4. Present the Claim: Submit supporting evidence to the appropriate insurer. OPD or CHP reports, surveillance footage, medical records, and witness information may help resolve disputes over fault.
  5. Negotiate a Settlement: The parties may exchange offers after reviewing the injuries, evidence, available insurance coverage, and disputed liability.
  6. File a Lawsuit if Needed: An injured rider may pursue an unresolved Ontario claim through the San Bernardino Superior Court. The case may include discovery, case management, settlement discussions, and trial.

The path of an Ontario motorcycle accident claim depends on the evidence, available insurance, and parties involved. Claims involving commercial vehicles, disputed fault, or dangerous roadway conditions may require additional investigation and legal review before resolution.

Proving Fault In An Ontario Motorcycle Accident

Negligence is the legal standard for motorcycle accident claims in California. Under Civil Code (CIV) § 1714(a), every person has a duty to use ordinary care to avoid injuring others. To recover damages, you must prove four elements against the at-fault party:

  • Duty. Every driver on Ontario’s roads, including on Archibald Avenue and the I-10 on-ramp at Euclid Avenue, owes other road users a duty to drive with reasonable care.
  • Breach. A driver breaches that duty by failing to meet its standard: speeding through a construction zone on Holt Boulevard, running a red light at 4th Street and Euclid Avenue, or failing to check mirrors before a lane change on I-10.
  • Causation. The breach must have directly caused your crash and your injuries. It is not enough that the driver acted carelessly. That carelessness must be the reason you were hurt.
  • Damages. You suffered actual, compensable losses: medical bills, lost wages, property damage, pain, and other harm.

Arash Law’s Ontario motorcycle accident attorneys build these cases using collision reports from the OPD or the CHP, medical records, witness statements, surveillance footage from businesses along the crash corridor, and, where applicable, black-box data from the at-fault vehicle. Each piece of evidence connects the driver’s conduct to your specific injuries.

Parties Who May Share Liability

One or more of the following parties may be responsible for a crash in Ontario:

  • The Driver. A driver who failed to use reasonable care under CIV § 1714(a). If the driver caused the crash by violating a traffic safety statute, such as exceeding a posted speed limit, that may create a presumption of negligence (Evidence Code § 669).
  • The Driver’s Employer. If the driver was working at the time of the crash, the employer may be liable under the doctrine of respondeat superior (California Civil Jury Instructions No. 3701). This is particularly relevant given Ontario’s large logistics and delivery workforce.
  • Trucking Companies. A truck company that violates federal safety rules, such as driver qualification, hours of service, vehicle inspection, or maintenance requirements under 49 C.F.R. Parts 391, 395, and 396, may be liable for crashes involving their vehicles on the I-10 or the I-15.
  • Manufacturers and Sellers. A defective part, such as a tire, brake, or helmet, may support a product liability claim (CACI Nos. 1200, 1201, and 1220).
  • Government Entities. When a dangerous road condition contributes to a crash, a public agency may share liability (Government Code §§ 830 and 835). Examples include a pothole on Euclid Avenue, an unmarked lane shift in a construction zone, or a malfunctioning signal on Holt Boulevard. These conditions may give rise to a claim against the City of Ontario, Caltrans, or San Bernardino County, depending on which one is responsible for maintaining the road where you were injured.

California’s Pure Comparative Fault Rule

California follows a pure comparative fault rule (Li v. Yellow Cab Co., 1975). Under it, you can still file a claim, even if you’re up to 99% responsible for your motorcycle accident. However, your percentage of fault reduces your recovery. For example, if a court assigns you 25% of the fault for a crash because you were lane-splitting unsafely on the I-10 near Milliken Avenue, you may still recover 75% of your total damages. 

Insurers may use comparative fault arguments to shift blame for a crash to the motorcyclist, so having an attorney to push back matters.

Deadlines For Ontario Motorcycle Accident Lawsuits

California imposes strict filing deadlines. Missing the one that applies to your case may permanently bar you from compensation:

  • Personal Injury (CCP § 335.1). Most injured riders have two years from the date of the crash to file a personal injury lawsuit in California civil court. This is the general deadline for motorcycle accident injury lawsuits.
  • Property Damage (CCP § 338). Lawsuits for motorcycle damage and gear loss must be filed within three years of the crash.
  • Wrongful Death (CCP § 335.1). Surviving family members have two years from the date of the rider’s death to file a wrongful death lawsuit. See the Recoverable Damages section for eligibility and damages under CCP §§ 377.60 and 377.61.
  • Government Entity Claims (Government Code § 911.2). If a public entity may be liable for a dangerous road condition, you generally must present a government claim to the correct government agency within six months of the crash under Government Code § 911.2. From here:
    • If the agency rejects the claim in writing, you generally have six months from the date of the written denial to file suit.
    • If the agency does not respond within 45 days and you do not receive a written denial, you have two years from the date of the motorcycle accident to sue.

Evidence can disappear fast in Ontario. On private properties near the crash scene, security cameras may overwrite surveillance footage within hours. Weather or traffic can wash away physical skid marks, and witnesses may also forget the specific details of the accident over time. The sooner an attorney gets involved, the better the chance that key evidence survives.

Results Arash Law Has Recovered For Motorcycle Accident Clients

The motorcycle accident case results discussed below did not arise in Ontario. However, they show how Arash Law can help injured clients handle disputes over fault and insurance coverage to pursue the full compensation available to them under the law:

$5M
Dangerous Left Turn

Even though our client suffered severe injuries, the police report initially found him at fault. He was allegedly speeding and riding his motorcycle under the influence. He was also barred from recovering pain and suffering damages under Proposition 213 because he was uninsured at the time. Our investigation revealed the truck driver had actually violated his training and his company’s safety protocols by making an unsafe left turn. Since the crash wouldn’t have occurred if it weren’t for that turn, we were able to obtain compensation for our client.

$1.45M
Uneven Pavement In A Construction Zone

Our client was a motorcycle rider who struck an uneven patch of pavement in an active construction zone. She suffered injuries to her head and ribs. The contractor and the city denied any responsibility until the trial began. After the first day of trial, once liability became clear, the case settled.

$1M
Wrongful Fault Assignment Reversed

Initially, the police held our client responsible for this motorcycle-versus-truck collision. We investigated independently, proved the truck driver was at fault, and recovered the full insurance policy limits.

Past results do not guarantee future outcomes. Every case depends on its own facts, injuries, evidence, and applicable insurance limits.

Talk To An Ontario Motorcycle Accident Attorney

Arash Law offers a free case evaluation. Call (909) 259-4700 (local Ontario line) or (888) 488-1391 (24-hour line) to schedule a consultation with one of our motorcycle accident attorneys.

If you or a family member was hurt in a motorcycle crash in Ontario, the time to act is now. Our Ontario injury law firm can help you obtain collision reports from the OPD or the CHP, as well as time-sensitive evidence such as surveillance footage. We can also identify whether you have a government claim early, which can matter because deadlines for taking action against a public entity can be as short as 6 months.

We typically offer contingency fee arrangements. The written agreement sets all fees and costs, as required by California Business and Professions Code § 6147.

Why Ontario Riders Choose Arash Law

Arash Law handles motorcycle accident claims throughout San Bernardino County, including the freight corridors, surface streets, and court venues specific to Ontario. Here is what that means in practice:

  • We know which agency holds your report. Whether the CHP worked your freeway crash or the OPD responded on Holt Boulevard, we request the right collision report from the right agency to support your claim.
  • We preserve evidence fast. We send evidence preservation letters to logistics facilities and other establishments near the scene of your crash, such as along the I-10, before surveillance footage is overwritten.
  • We act immediately on government-entity claims. When a public entity may be liable, such as for a pothole on Euclid Avenue or a hazard on an I-10 on-ramp, we identify whether you have a claim as soon as possible so we can help you comply with the applicable filing deadlines mentioned above.
  • We can handle claims involving trucks. In Ontario, the logistics economy means many motorcycle crashes involve commercial vehicles. Our Ontario truck accident lawyers understand the federal safety regulations that apply to those carriers.
  • We help deal with insurers. Adjusters may contact injured riders quickly with early, low offers. We take over all communications so you can focus on recovery.
  • We take cases to court. If negotiations do not produce fair compensation, Arash Law’s trial attorneys are ready to file in the San Bernardino Justice Center and present your case to a jury. We can help you anticipate how scheduling and local filing procedures may affect your case.

Frequently Asked Questions About Motorcycle Accidents In Ontario

These frequently asked questions address common concerns about fault, insurance, filing deadlines, and legal claims after a motorcycle accident in Ontario.

The motorcyclist may not be at fault because lane-splitting is legal in California (VEH § 21658.1). Instead, a driver who unsafely changes lanes, cuts off a rider, or fails to check for motorcyclists before turning may be liable for the resulting injuries and losses. However, if the motorcyclist’s lane-splitting was unsafe given the speed and traffic conditions at the time, a court may assign them a percentage of fault. 

In this case, California’s pure comparative fault rule may apply. The full rule and an example are in the Fault section above. An insurer may try to argue that any lane-splitting constitutes negligence. An attorney familiar with how that argument plays out in San Bernardino County courts can advocate for a fairer allocation of fault based on the available evidence.

No. Adjusters may offer quick settlements before the full extent of spinal, neurological, or internal injuries is medically documented. Signing a release permanently waives your right to seek additional compensation, including for future surgeries, ongoing care, or a worsening prognosis. 

Speaking with an attorney before accepting any offer costs you nothing under a contingency arrangement and may protect your right to a fair recovery.

Yes. VEH § 27803 requires motorcycle riders and their passengers to wear helmets. A defendant may argue that failure to wear a helmet contributed to the severity of certain injuries. Still, any reduction in damages depends on the evidence and whether the helmet nonuse was causally connected to those injuries.

An attorney can challenge the mitigation argument by focusing on the independent cause of the crash and the injuries that would have occurred regardless of helmet use.

Not necessarily. You can still use a lawyer because you may have a claim against a government agency rather than another driver. If a dangerous road condition, such as a broken signal on Holt Boulevard, contributed to your crash, a public entity such as the City of Ontario or Caltrans may share liability.

Having an attorney to help you pursue a government claim can be crucial. These claims often follow a different process and have stricter, shorter deadlines than claims against a private party. Contact an attorney immediately because timing is critical.

Under a contingency fee arrangement, you only pay the attorney’s fees if you receive a settlement or court award. The firm typically advances litigation costs, including investigation costs, expert fees, and court costs, subject to the terms of the written fee agreement.

The specific agreement governs whether and under what conditions advanced costs are reimbursed from any recovery, as required by California Business and Professions Code § 6147 and California Rules of Professional Conduct Rule 1.5. You usually don’t have to pay up front to get started.

No. A driver’s failure to see a motorcycle before a crash does not eliminate their legal liability in Ontario. Instead, it may support a finding of negligence when the evidence shows that reasonable care would have allowed the driver to observe and avoid the hazard.

Left-turn collisions on Euclid Avenue, Holt Boulevard, and Archibald Avenue, and lane-merge situations on the I-10, frequently involve this exact claim. An at-fault driver cannot escape liability simply by saying they did not notice the motorcycle. An attorney can use collision reports, surveillance footage, and witness statements to establish that the driver’s failure to see you was itself negligent.

Yes, in some cases, you still have to report the accident even if the police didn’t respond to the scene. First, if the accident involved injury or death, VEH § 20008 generally requires you to make a written report to the CHP or Ontario police within 24 hours.

Second, if the motorcycle accident involved an injury, death, or property damage worth more than $1,000, you must submit an SR-1 form to the DMV within 10 days. This step is separate from notifying the police and your own insurer of the crash.

Ready To Talk? Arash Law Is Available Now

Ontario motorcycle accident cases are time-sensitive. Surveillance footage disappears within days. Government-claim deadlines can be as short as 6 months, during which a public entity may be liable. The sooner you speak with an attorney, the more options you have.

Our motorcycle accident attorneys at Arash Law also handle other kinds of claims, such as car accidents, and they serve Ontario and the surrounding Inland Empire communities. This includes Rancho Cucamonga along the I-15, as well as Fontana, Upland, and Montclair along the I-10.

Call (909) 259-4700 (local Ontario line) or (888) 488-1391 (24-hour line) anytime, 24 hours a day. Your free case evaluation is waiting.

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The information on this page is for general informational purposes only and does not constitute legal advice. Contacting Arash Law does not create an attorney-client relationship until a written retainer agreement is signed. If you have been injured in a motorcycle accident in Ontario, California, consult a qualified personal injury attorney promptly to protect your rights and preserve critical evidence.

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