Motorcycle Accident Laws in California

California motorcycle accident laws protect injured riders in ways most drivers, and many adjusters, don’t expect. Lane splitting is legal. A missing helmet doesn’t erase your claim. Sharing some of the blame lowers your recovery instead of ending it. This guide explains those rules, the deadlines that apply, and what a motorcycle accident lawyer in California can recover for you.

You had no airbag, no bumper, and no steel frame around you, so you took the full force of the crash. Whether it happened on the 405 or at an intersection on Ventura Boulevard, the other driver’s insurer is already counting on the “reckless biker” story to cut what it pays you. Witnesses, officers, and adjusters often assume the rider was speeding before the police report is even written. Knowing the law is how you push back.

Why Insurers Treat Riders Differently

Insurance companies count on bias in motorcycle cases. Many people, including some jurors, see riders as risk-takers who “asked for it.” Adjusters use that belief to shift blame onto you, no matter what the other driver did.

Expect them to dig into your speed, your gear, your riding history, and whether you were lane splitting. They may offer a quick check before you know how badly you are hurt, or ask for a recorded statement and hunt for one sentence to use against you. The playbook behind why insurers pay motorcyclists less is predictable, and it can be beaten.

“I didn’t see him” is not an excuse. It is an admission that the driver wasn’t looking. We hold insurers to that, and we build the case so a jury hears the rider’s side first.

What to Do After a Motorcycle Crash in California

The first days after a crash shape your whole claim. If you are able, take these steps, or ask someone you trust to take them for you.

1. Get medical care right away. Adrenaline hides injuries. A same-day record ties your injuries to the crash, and insurers attack every gap in treatment.
2. Call the police. Depending on where you crashed, city police, the CHP, or the county sheriff will respond. In Los Angeles, that means LAPD, the CHP, or the LA County Sheriff’s Department. Ask for the report number.
3. Photograph everything. Capture the vehicles, the road surface, skid marks, traffic signals, and your injuries. Note any nearby business cameras.
4. Get witness names and numbers. Independent witnesses carry weight, and their memories fade fast.
5. Don’t repair the bike or throw out your gear. A scuffed helmet and a torn jacket show where and how hard you were hit. They are evidence.
6. Don’t give a recorded statement to the other driver’s insurer. You can report the crash to your own carrier, but talk to a lawyer before you talk to theirs. Here is what riders need to know before talking to an insurer.
7. Call a motorcycle accident attorney. The sooner we start, the sooner we can lock down video, witnesses, and the scene.

The sooner you call, the more options you have. Call Haffner Law at (213) 514-5681 for a free case evaluation.

How California Motorcycle Accident Laws Protect Riders

These are the rules adjusters hope you never learn. Knowing them is often the difference between a lowball offer and full compensation.

California’s Lane Splitting Law

Insurers love to blame a rider for lane splitting, counting on drivers to believe it is against the law. It isn’t. California’s lane splitting law took effect January 1, 2017. It defines lane splitting as riding a two-wheeled motorcycle between rows of stopped or moving vehicles in the same lane, and it authorizes the California Highway Patrol to publish safety guidelines for it.^[1]

The CHP’s message to drivers is plain: lane splitting by motorcyclists is legal in California. The CHP also notes that riding on the shoulder is illegal and is not lane splitting, and that the danger grows as overall speed and the speed gap with traffic increase.^[2]

The statute itself sets no speed number for lane splitting. Adjusters sometimes use that gap to argue any split was unsafe, so we answer with the facts: your speed, your spacing, and the traffic around you. Our guide for riders who were lane splitting when the crash happened walks through how fault is really decided.

Lane splitting doesn’t make a crash your fault. If a driver drifted, merged without looking, or closed the gap on you, that driver is responsible.

Drivers Owe Riders Duties, Too

The same CHP guidance warns drivers that intentionally blocking or impeding a motorcyclist in a way that could cause harm is illegal, and so is opening a vehicle door to impede a rider. California law separately bars anyone from opening a car door on the traffic side unless it is reasonably safe and won’t interfere with moving traffic.^[3] We use these rules to show a jury who really broke the law.

California Motorcycle Helmet Law and Your Claim

California’s motorcycle helmet law requires every rider and passenger to wear a properly fastened safety helmet.^[4] Riding without one does not erase your case. The defense can try to cut what you recover for injuries it claims a helmet would have prevented, but it has to prove that connection.

California courts handle the closely related seat belt defense the same way: the defense must show what injuries would have been avoided, usually through expert testimony.^[5] A broken leg or a shattered wrist has nothing to do with a helmet, and we don’t let the defense pretend otherwise.

Partly at Fault? You Can Still Recover

California uses pure comparative fault. In plain English: if a jury finds you 20% responsible, you can still recover 80% of your damages.^[6] Insurers use this rule as a weapon to shave your payout. We use the evidence to keep your share of fault where it belongs, at or near zero.

Statute of Limitations and Other Deadlines

In most cases, California’s statute of limitations gives you two years from the crash to file a personal injury lawsuit.^[7] If a city bus, another government vehicle, or a dangerous public road played a part, the clock is much shorter: a written claim to the city, county, or state agency is due within six months.^[8]

Miss a deadline and you can lose your case, no matter how strong it is. Call us early so we can confirm the deadlines that apply to you.

How Motorcycle Crashes Happen

Most crashes we see start with a driver who wasn’t watching for a motorcycle. Federal crash data backs that up. In 2024, there were 3,396 fatal crashes nationwide between a motorcycle and one other vehicle, and in 45% of them, the other vehicle was turning left while the rider was going straight, passing, or overtaking.^[9]

• Left turns across your path. A driver at an intersection turns left in front of a rider who has the right of way.
• Unsafe lane changes. A driver checks a phone instead of a mirror and merges into you on the 101 or the 10. Phone records and dashcam video can prove a distracted driver caused the crash.
• Dooring. A parked driver swings a door open into traffic without looking.
• Rear-end and sideswipe crashes. A distracted driver doesn’t register a motorcycle’s smaller profile in stop-and-go traffic.
• Impaired drivers. A drunk or high driver hits a rider, who takes the worst of the injuries.
• Road hazards. Potholes, gravel, and broken pavement that a car rolls over can throw a bike, and they can create a claim against the agency responsible for the road. Here is how road hazard motorcycle claims work.

Who Can Be Held Responsible

The driver who caused the crash is usually the main defendant. Liability can reach further:

• The driver’s employer, if the driver was working at the time.
• A government agency, when a dangerous road condition helped cause the crash. The six-month government claim deadline applies.
• A manufacturer, when a defective tire, brake, or other part failed.

We look for every responsible party because each one may carry its own insurance. It is the same approach we bring to every Los Angeles vehicle accident case, from rideshare crashes to commercial trucks.

When the Driver Has Little or No Insurance

In a serious motorcycle case, the at-fault driver’s insurance may not come close to covering your losses. California’s minimum liability coverage is $30,000 for one person’s injuries, and a serious motorcycle injury can exceed that quickly.^[10]

Your own uninsured/underinsured motorist (UM/UIM) coverage can step in. California requires it in every motor vehicle liability policy unless you signed a written agreement to delete it. If the at-fault driver carried less coverage than your UIM limit, your policy can pay the difference after their insurer pays its limit. A UM claim also has its own two-year deadline to sue, settle, or formally demand arbitration.

Your own uninsured/underinsured motorist (UM/UIM) coverage can step in. California requires insurers to include it in every motor vehicle liability policy unless you signed a written agreement to delete it. If you were riding your own motorcycle, the UM/UIM on your car policy generally won’t cover you unless the bike is insured under that policy, so the motorcycle policy is the first place to look.^[11]

Underinsured motorist coverage applies when the at-fault driver’s liability limit is lower than your own UIM limit, and it starts only after that driver’s insurer pays its full limit. Then your UIM pays your remaining losses, up to your UIM limit minus what you already collected from the at-fault side. With a $100,000 UIM limit and a driver who carried $30,000, your own policy can pay up to $70,000 more if your losses reach that high.

A UM or UIM claim also has its own two-year deadline. Within two years of the crash, you must sue the at-fault driver, reach an agreement with your insurer, or formally demand arbitration in writing by certified mail.

Your own insurer is not your friend here. It still wants to pay as little as possible. If it unreasonably denies or delays a valid UM/UIM claim, that can become a separate insurance bad faith claim against your own carrier.

Motorcycle Crash Injuries

Riders rarely walk away with minor injuries. The ones we see most:

• Road rash. Skin scraped away by the pavement. Severe cases need debridement (removing damaged tissue), skin grafts, and months of healing.
• Degloving injuries. Skin and tissue torn away from muscle or bone.
• Leg fractures. Tibia and fibula breaks are common when the bike comes down on the rider.
• Brachial plexus injuries. Damage to the nerves running from the neck into the arm, often from landing on a shoulder. Riders sometimes call it “biker’s arm.”
• Brain injuries. Even with a good helmet, the brain can suffer a concussion or a bleed. The next section explains why these claims need special handling.
• Spinal cord injuries. Partial or complete paralysis that changes a whole family’s future. Our spinal cord injury lawyers build these claims around a lifetime of care, and our guide to spinal cord injury motorcycle claims explains what they must cover.

If you lost someone you love in a motorcycle crash, your family may have a wrongful death claim, and we handle those cases with the care they deserve.

Brain Injuries After a Motorcycle Crash

A brain injury is the injury insurers are most likely to undervalue in a motorcycle case. A concussion can look minor in the emergency room and still change how you think, work, and live for years. Symptoms such as headaches, memory gaps, trouble concentrating, light sensitivity, and mood or personality changes can show up days or weeks after the crash, often after an adjuster has already made an offer.

Helmets lower the risk, but they don’t eliminate it. The brain can still strike the inside of the skull in a hard impact, which is why riders wearing good helmets still suffer concussions, bruising, and bleeding on the brain. When a rider isn’t wearing a helmet, the defense puts most of its energy into the brain injury, which makes careful medical proof even more important.

These cases are won with medical proof. We work with neurologists, neuropsychologists, life-care planners, and economists to show what the injury will cost over a lifetime, including care, lost earning capacity, and the changes your family lives with. Our firm handles traumatic brain injury claims across every kind of crash, and our guide to brain injuries from a motorcycle crash covers what these claims must include.

Don’t settle a brain injury claim before your doctors understand your prognosis. Once you sign a release, you can’t go back for symptoms that show up later.

What Your Motorcycle Accident Claim Is Worth

There is no average motorcycle settlement, and anyone who quotes you one without seeing your case is guessing. What drives value is concrete: how badly you were hurt, what your care will cost, what you lost in income, and how much insurance is available. A claim can include:

• Medical costs, past and future, including surgery, skin grafts, physical therapy, and reconstructive work for scarring.
• Lost income, for the time you missed and any lasting hit to your ability to earn.
• Your bike, repaired or replaced at fair value, including aftermarket parts, not the low book number an adjuster offers.
• Your gear, including helmet, jacket, gloves, and boots, at replacement value.
• Pain and suffering, including scarring, lasting pain, and losing the ability to ride.

If You Were Riding Uninsured

This rule catches riders off guard. Under Proposition 213, a rider who owned an uninsured bike, or who can’t show the insurance California requires, generally cannot recover pain-and-suffering damages from the at-fault driver. The same bar applies to a rider convicted of DUI for the crash.^[12] You can still recover medical bills, lost wages, and property damage.

There are exceptions. If you owned the uninsured bike and the driver who hit you is convicted of DUI for the crash, the limit lifts. The California Supreme Court has also held that the limit doesn’t apply to a product-defect claim against a vehicle manufacturer.^[13]

What It Costs to Hire Haffner Law

Nothing up front. We work exclusively on contingency, and you pay nothing unless we win. We advance every cost of building your case, from expert witnesses and accident reconstruction to court filing fees. If we recover money for you, those costs are repaid from the recovery; if we don’t, you owe us neither a fee nor the costs we advanced. Your written fee agreement spells out how fees and costs are handled, and we’ll walk you through it at your free consultation before you sign anything.

How a California Motorcycle Accident Lawyer Builds Your Case

Defeating biker bias takes more than telling a jury it exists. It takes evidence.

We lock down video from dashcams, GoPros, and nearby businesses before it’s erased, and we document skid and yaw marks that show you reacted and tried to avoid the crash. We depose the responding officer and any adjuster who assigned early fault. When lane splitting is part of the story, we bring in accident reconstructionists to show your speed, spacing, and lane position were safe.

We build the medical side just as carefully. Road rash, degloving, and nerve damage can mean years of treatment. We work with your doctors and life-care planners to document what your recovery will actually cost, not just what it has cost so far.

You’ll work directly with one of our motorcycle accident attorneys, not a case manager. The firm is led by Joshua Haffner, who has represented injured people in California for more than 20 years and was nominated for Trial Lawyer of the Year by the Consumer Attorneys of California in 2012

How Long a Motorcycle Claim Takes

The biggest factor is your medical recovery. We usually don’t settle until we know the full cost of your injuries, because a settlement is final. From there, a case moves through these stages:

1. Investigation. We gather the police report, video, witness statements, and medical records.
2. Demand. Once your treatment picture is clear, we send the insurer a demand backed by the evidence.
3. Negotiation. Many cases settle here. If the offer is too low, we don’t take it.
4. Lawsuit and discovery. If the insurer won’t pay fairly, we file suit. Both sides exchange evidence and take depositions, and many cases settle during this stage.
5. Trial. If the case doesn’t settle, we try it in front of a jury in California superior court, such as Los Angeles County Superior Court.

A lowball offer that comes fast is a warning sign, not a gift. Insurers move quickly when they think you don’t yet know what your case is worth.