Lane Splitting in California: What Riverside Riders Need to Know About Liability
Lane splitting is legal in California. That single fact catches a lot of riders off guard, especially anyone who moved here from a state where squeezing a motorcycle between two lanes of cars draws a ticket.
But legal and automatically blameless are two different things.
If a driver hits you while you are riding between lanes near Riverside, the way you were riding in the seconds before impact can decide who pays your medical bills. Out-of-state visitors and new California residents ask us about this constantly, usually right after a crash, when it is already too late to change how the accident looked on paper. Before you say a word to an insurance adjuster, it helps to know how California actually treats lane splitting and fault.
At Knez Law Group, our motorcycle accident attorneys help injured riders push back when insurance companies try to pin a crash on lane splitting alone. Call us at 951-742-7681 or fill out our confidential contact form to talk about what happened.
Is Lane Splitting Actually Legal in California?
Yes. California Vehicle Code 21658.1 made it official in 2017, defining lane splitting as riding a motorcycle between rows of stopped or moving vehicles in the same lane.
Before that, riders had operated in a gray area for decades, tolerated but never formally protected.
California is still the only state that spells lane splitting out in writing. The law also told the California Highway Patrol to publish safety guidance, and that guidance matters more than most riders realize. The CHP leans on judgment instead of a fixed speed limit. Splitting lanes at 40 mph through stopped traffic, or doing it on a quiet residential street with parked cars and driveways, falls outside the riding the law was written to protect.
As a motorcycle accident law firm that has handled lane-splitting claims across the Inland Empire, we hear the same confusion again and again. Riders assume legal means are risk-free. Drivers assume legal means reckless. Neither assumption holds up in court.
How Lane Splitting Affects Fault After a Crash
California follows comparative negligence. More than one person can share the blame for a wreck, and your compensation gets reduced by your percentage of fault rather than erased completely.
If a driver changes lanes without checking a mirror and hits you while you are splitting lanes safely, that driver can carry most or all of the blame.
If you were splitting lanes fast and aggressively when the crash happened, an insurance company will use that to argue you caused your own injuries.
Picture a rider moving 10 mph faster than stalled freeway traffic when a driver drifts over without signaling. That is a very different case, legally, than a rider weaving through a side street at 35 mph who clips a mirror.
This is where riders get blindsided. Adjusters know lane splitting carries a stigma, and some lean on that stigma instead of the facts.
A Riverside motorcycle accident lawyer who understands how CHP guidance and crash reports fit together can show what actually happened on the road, not just what looks bad on paper.
What the Research Actually Shows
Researchers at UC Berkeley studied nearly 6,000 motorcycle crashes and found that riders splitting lanes with a speed difference of 15 mph or less were not more likely to get hurt than riders who were not splitting at all.
However, at speeds over 15 mph, there was a higher risk of injury. That 15 mph line often marks the difference between a defensible lane-splitting maneuver and one an insurance company will call reckless, and it is one of the first details we check when we review a new case.
Common Ways Drivers Cause Lane-Splitting Crashes
Most lane-splitting accidents in Riverside-area traffic do not start with the rider. They start with a driver who:
- Changes lanes without checking a mirror or blind spot
- Opens a car door into traffic without looking back
- Turns left across a lane that a rider is moving through
- Brakes hard and gets rear-ended into the rider’s path
A motorcycle accident attorney’s job is to track down the dash cam footage, the 911 call, and the witness statements that put the real cause of the crash on the record before the insurance company writes its own version. Crash scenes change fast. Cars get towed, skid marks fade, and memories blur within days.
What To Do If You’re Hit While Lane Splitting
Get medical care first, even if you feel fine. Adrenaline hides injuries for hours, and some of the most common motorcycle injuries, like concussions and soft tissue damage, do not show symptoms right away.
Call the police and ask for a copy of the report. Photograph the scene, both vehicles, and your bike before anything gets moved or repaired. Write down what you remember while it is still fresh.
Then, before you give a recorded statement to anyone’s insurance company, talk to a motorcycle accident lawyer or a lawyer who handles personal injury claims in Riverside about what you should and should not say.
Contact Our Riverside Motorcycle Accident Lawyers
As a motorcycle accident law firm in Riverside, Knez Law Group has watched insurance companies use the words lane splitting to scare riders out of fair settlements. The law protects riders who split lanes safely. Make sure someone is protecting you just as carefully after a crash.
Knez Law Group, LLP is located at 3890 Tenth St., Riverside, California 92501. If a driver hurt you in a lane-splitting accident, call us at 951-742-7681 or fill out our confidential contact form so our team can hear your side of the story.
Matthew J. Knez graduated from the University of Redlands in California with a Bachelor of Arts degree in Creative Writing. He then pursued his law degree at the University of La Verne College of Law in Ontario, California, where he earned various awards, including the CALI Award in Torts, and was on the Dean’s List. During his time in law school, Mr. Knez was a member of the Justice and Immigration Clinic, working with individuals seeking asylum in the United States from countries where they faced persecution or threats of persecution. Additionally, he was an Associate Editor for the Law Review and published an article on California family custody move-away cases. Learn more here.