Is Lane Splitting Legal in California? Here’s What You Need to Know
Yes, lane splitting is legal in California! Unlike most states, California allows motorcyclists to ride between lanes of traffic under specific conditions. According to California Vehicle Code § 21658.1, motorcyclists may engage in lane splitting on highways, roads, and streets—both divided and undivided—provided they do so safely.
You may also hear lane splitting referred to as white lining or filtering. If you’re a motorcyclist or a driver in California, understanding these laws is essential to staying safe on the road.
At Tulekyan Law, our experienced motorcycle accident lawyers explain California lane splitting laws, what happens if you’re in an accident, and how liability is determined.
What Is Lane Splitting?
Lane splitting is when a motorcyclist moves between lanes of stopped or slow-moving vehicles rather than staying behind them. This maneuver helps motorcyclists avoid congestion and reduce their risk of rear-end collisions.
However, while legal, lane splitting must be done cautiously. Under California Vehicle Code § 23103, a motorcyclist who lane splits in a reckless manner—showing willful disregard for safety—could be guilty of reckless driving.
Lane Sharing vs. Lane Splitting: What’s the Difference?
Leaving the scene of an accident is a serious criminal offense under California Vehicle Code § 20001. Depending on the severity of the accident, a hit and run driver may face:
- Misdemeanor Charges – Punishable by up to one year in county jail and/or a fine ranging from $1,000 to $10,000.
- Felony Charges – If the accident causes injury or death, penalties increase to up to four years in state prison and/or a fine between $1,000 and $10,000.
These strict laws are in place to hold negligent drivers accountable and provide justice to victims.
Is Lane Splitting Legal in California?
Yes! California is the only U.S. state where lane splitting is explicitly legal. However, safety is key.
The California Highway Patrol (CHP) has issued lane splitting guidelines, recommending that motorcyclists consider factors like:
- Traffic speed – How fast traffic is moving overall.
- Speed differential – The difference between motorcycle and traffic speed.
- Road conditions – Lane width, weather, lighting, and other hazards.
- Driver awareness – Whether surrounding drivers can see the motorcyclist.
While there is no specific speed limit for lane splitting, previous CHP guidance suggested it should only be done when traffic is moving at 30 mph or less and the motorcyclist does not exceed traffic speed by more than 10 mph.
Ultimately, motorcyclists must assess conditions in real time and use their best judgment.
Motorcycle Lane Splitting Safety Guidelines
While lane splitting is legal, motorcyclists must follow best practices to minimize risks. The CHP’s recommended safety measures include:
- Only split lanes when it is safe to do so.
- Avoid riding in drivers’ blind spots.
- Prefer lanes 1 and 2 (the leftmost lanes) for splitting.
- Wear bright or reflective clothing for visibility.
- Be aware of roadway conditions, traffic flow, and surrounding vehicles.
- Stay alert and defensive—not all drivers expect lane-splitting motorcyclists.
Riders who follow these precautions significantly reduce their risk of motorcycle accidents.
Can a Driver Open Their Car Door to Block a Lane-Splitting Motorcyclist?
No! It is illegal for a motor vehicle driver to open their door to block a motorcyclist. Intentional obstruction, whether by opening a door or making other sudden maneuvers, puts riders in danger and can lead to serious liability for the driver.
If a driver blocks or intentionally impedes a motorcyclist while lane splitting, they could be held legally responsible for any resulting injuries or damages.
Lane Splitting & Legal Liability: Who’s at Fault in an Accident?
Just because a motorcyclist is lane splitting does not mean they are automatically at fault for an accident.
A motorcycle accident claim depends on who was negligent. If a driver acted recklessly or unlawfully, they may be liable. Examples of driver negligence include:
- Sudden lane changes without checking mirrors
- Opening car doors in moving traffic
- Blocking or cutting off motorcyclists intentionally
However, a motorcyclist could be found partially at fault if they were lane splitting dangerously—such as weaving erratically, speeding excessively, or disregarding conditions.
Proving fault requires strong evidence, such as:
- Dashcam footage or surveillance video
- Accident reconstruction analysis
- Witness statements
- Traffic conditions and road reports
A skilled motorcycle accident attorney can help gather evidence and defend your rights.
Injured While Lane Splitting? Tulekyan Law Can Help
If you were involved in a motorcycle accident while lane splitting, you may still have a valid claim for compensation.
At Tulekyan Law, we help injured motorcyclists:
- Prove fault and defend against false negligence claims
- Hold reckless drivers accountable
- Maximize compensation for medical bills, lost wages, and pain & suffering
Free Case Evaluation – Call Tulekyan Law Today!
Motorcycle accidents can be complex—but you don’t have to face it alone. If you or a loved one has been injured in a lane-splitting accident, contact Tulekyan Law now.
Call us today or send us a message to get started. We fight for the justice you deserve.
