Common Causes of Motorcycle Accidents in California and Who’s Responsible
- Kimberly Ferrato
- 5 days ago
- 6 min read
Updated: 5 days ago
Motorcycle accidents in California often result in serious injuries, and in many cases, they are preventable.
These crashes are often caused by drivers not paying attention, unsafe lane changes, speeding, or road hazards. Responsibility depends on who failed to act reasonably under the circumstances, and more than one party can share fault under California’s comparative negligence system.
If you were involved in a motorcycle accident or are trying to understand what caused it or who may be responsible, it is completely normal to feel unsure about how fault is actually determined or what comes next.
At Gomerman | Bourn & Associates, we represent injured individuals and understand how important it is to identify what happened and who may be at fault.
In This Article
Causes, Fault Evaluation, and Liability Factors
What Causes Most Motorcycle Accidents?
Understanding the most common causes can help make sense of how these accidents happen and how responsibility is evaluated.
Drivers Failing to See Motorcycles
One of the leading causes of motorcycle crashes is simple. Drivers do not see riders.
Even when a driver claims they did not see the motorcycle, they are still expected to check their surroundings and yield when necessary.
Unsafe Lane Changes
Drivers have a responsibility to check blind spots and ensure it is safe before changing lanes.
Lane splitting is legal in California, but it must be done safely. It does not automatically make a motorcyclist at fault in an accident. Many people are unsure how this affects responsibility.
If you want a clearer understanding, this guide explains how lane splitting works in California.
Left-Turn Accidents
A common and dangerous situation occurs when a vehicle turns left in front of an oncoming motorcycle.
In many of these cases, the driver is required to yield to oncoming traffic. Failing to do so can make them responsible for the collision.
Distracted Driving
Texting, GPS use, or other distractions significantly increase the risk of hitting a motorcyclist.
Even a brief moment of not paying attention can lead to a serious collision. In some cases, proving distraction may involve phone records, witness statements, or video evidence.
Speeding and Reckless Driving
Excessive speed reduces reaction time and increases the severity of injuries in any crash.
If you are trying to understand what contributed to an accident, speed is often one of the key factors investigators look at.
Driving Under the Influence
Alcohol and drug impairment remain major contributors to serious motorcycle accidents.
These situations are often more straightforward in terms of liability, but they can still involve complex legal and insurance issues.
Road Hazards and Poor Conditions
Motorcyclists are especially vulnerable to road conditions that drivers of larger vehicles may not notice.
Common hazards include:
Potholes
Loose gravel
Debris
Uneven pavement
If your accident did not involve another vehicle, you may be wondering what options exist. In some cases, unsafe road conditions may be tied to poor maintenance, and the agency responsible for the roadway may be held accountable.
Dooring Accidents
Dooring accidents happen when a parked driver opens their door into traffic.
For a passing motorcyclist, this can be sudden and difficult to avoid. These incidents are more common in areas with street parking.
Defective Motorcycle Parts
Not all accidents are caused by driver behavior.
Faulty brakes, tires, or other components can lead to mechanical failure. When this happens, the cause of the accident may not be immediately obvious and may require closer inspection of the motorcycle and its components.
Why Motorcycle Accidents Are So Dangerous
Motorcyclists have far less protection than drivers of passenger vehicles. Even a low-speed collision can lead to serious injuries.
Because of this, even small errors by other drivers can have serious consequences for a motorcyclist.
Common injuries include:
Traumatic brain injuries (TBI)
Spinal cord injuries
Broken bones
Road rash and permanent scarring
If you are reading this after an accident, you may already be dealing with how quickly these situations can become serious.
Who Is Responsible for a Motorcycle Accident?
Responsibility depends on who failed to act reasonably under the circumstances, and in many cases, more than one party may share fault. Anyone who violated the vehicle code will be deemed negligent as a matter of law.
Motorcycle accident cases often involve disputed facts, which is why a careful review of the evidence is important. California follows a pure comparative negligence system.
In simple terms, this means more than one party can share fault. Even if a motorcyclist is partially responsible, they may still be able to recover compensation, reduced by their percentage of fault.
If you are trying to understand how fault is assigned, it is usually based on evidence such as police reports, witness statements, and sometimes accident reconstruction.
These cases can also involve assumptions about rider behavior, which makes it especially important to focus on the actual facts of the accident.
Negligent Drivers
Most motorcycle accident claims involve drivers who fail to operate their vehicles safely under the circumstances. In many cases, this includes failing to yield, making unsafe turns, or not paying adequate attention to surrounding traffic.
These types of actions often come down to a failure to properly account for nearby traffic, especially smaller and less visible vehicles like motorcycles, which drivers are still expected to watch for.
Motorcyclists (Partial Responsibility)
In some cases, a rider may share part of the responsibility.
This does not prevent recovery, but it can affect the amount of compensation available.
Government Entities
If unsafe road conditions contributed to the crash, a city or state agency may be involved.
These claims follow strict rules and shorter deadlines, and missing those deadlines can prevent a claim from moving forward.
Manufacturers
If a defective product contributed to the accident, the manufacturer or distributor may be responsible.
These cases often require technical investigation.
Employers
If the at-fault driver was working at the time of the accident, their employer may also be responsible.
This can apply in situations involving delivery drivers, company vehicles, or other work-related travel.
💡How is fault proven in a motorcycle accident?
Fault is determined by reviewing evidence such as police reports, witness statements, photos, video footage, and sometimes expert analysis. Investigators look at what happened leading up to the crash and whether each party acted reasonably under the circumstances.
If you are unsure how fault might be evaluated in your situation, that is common. In many cases, responsibility is not immediately clear and requires a closer look at the full set of facts.
What Compensation Can You Recover?
Individuals injured in a motorcycle accident may be able to recover compensation for medical bills, lost income, pain and suffering, emotional harm, and damage to their property.
If you are unsure what applies to your situation, that uncertainty is common. Each case is different, and the outcome depends on the specific facts involved.
What to Do After a Motorcycle Accident
After an accident, it is common to feel overwhelmed or unsure what matters most. Taking a few key steps early on can make a meaningful difference later.
Seek medical attention immediately
Document the scene
Obtain a police report
Be cautious when speaking with insurance companies
Contact an attorney
How Gomerman | Bourn & Associates Can Help
At Gomerman | Bourn & Associates, we represent individuals who have been harmed due to negligence. Our team approaches each case with care, preparation, and a focus on achieving meaningful results.
These cases often involve disputed liability and complex evidence, especially when more than one party may share responsibility.
If you have questions about a motorcycle accident or how responsibility may be evaluated, speaking with an attorney can help clarify your options.
You can call our office at (415) 545-8608 to go over your situation.
Frequently Asked Questions
Is the motorcyclist always at fault in an accident?
No. Motorcyclists are not automatically at fault. Responsibility depends on the actions of everyone involved, and multiple parties can share fault under California’s comparative negligence system.
Is lane splitting legal?
Yes, lane splitting is legal in California, but it must be done safely. It does not automatically make a motorcyclist responsible for an accident, and fault depends on how each party was operating at the time.
Can more than one person be responsible for a motorcycle accident?
Yes. California follows a comparative negligence system, which means multiple parties can share responsibility. Each party is assigned a percentage of fault, and any recovery is typically reduced based on that share.
What if road conditions caused the accident?
In some cases, a government agency may be responsible for unsafe road conditions. These claims are handled differently and often involve strict deadlines and procedural requirements.
Can a manufacturer be held responsible for a motorcycle accident?
Yes, if a defective part, such as brakes or tires, contributed to the crash. These cases typically require technical investigation to determine whether a product failure was involved.
