Is Lane Splitting Legal in California?

Motorcycle riders are especially vulnerable on California roads, often facing heightened risks due to distracted drivers, congestion, and limited visibility. To help avoid rear-end collisions and minimize their time in traffic, motorcyclists sometimes engage in lane splitting: a practice where the rider passes between two lanes of slower-moving vehicles.

California is currently the only state in the U.S. where lane splitting is legal. However, while permitted, it must be done cautiously and within recommended safety guidelines to avoid injury or liability.

If you’ve been injured while lane splitting, it is essential to understand your rights under California law. In many cases, the driver of a motor vehicle may still be liable for failing to observe or yield to the rider. If you or a loved one have been injured in a motorcycle accident involving lane splitting, call us at (949) 771-4188 for a free consultation.

What Is Lane Splitting?

Lane splitting refers to a motorcyclist riding between two lanes of traffic that are moving in the same direction. This is most commonly done during heavy traffic or at stoplights when surrounding vehicles are slowed or stopped. Although controversial in other states, California formally legalized lane splitting through California Vehicle Code § 21658.1 in 2017.

Safety Guideline For Lane Splitting

Although legal, lane splitting must be done safely. The California Highway Patrol (CHP) offers specific recommendations:

• Only lane split when surrounding traffic is moving slowly, ideally under 30–40 mph.

• Do not exceed the speed of traffic by more than 10 mph while splitting.

• Avoid lane splitting next to large vehicles such as big rigs or buses.

• Always remain visible to drivers and avoid blind spots.

• Never ride on the shoulder—this is not considered lane splitting and is illegal.

• Riders should be experienced and alert, especially in poor weather or low visibility conditions.

When Is Lane Splitting Dangerous Or Illegal?

Lane splitting can become dangerous when done recklessly or at high speeds. Riders who weave unpredictably through traffic or lane split in unsafe conditions may be found partially or fully at fault in an accident.

Similarly, drivers who intentionally block motorcycles or open car doors into their path may be liable for resulting injuries. California law requires all motorists to exercise reasonable care, including looking out for motorcycles.

Common Causes Of Lane Splitting Accidents

Some of the most common causes of accidents involving lane splitting include:

Driver Merges Without Checking
One of the leading causes of lane splitting accidents is when a driver changes lanes without checking their mirrors or blind spots. This can lead to a sudden sideswipe collision with the motorcyclist.

Aggressive or Distracted Driving
Distracted or impatient drivers may fail to notice a motorcycle riding between lanes or may become hostile toward riders who lane split, increasing the risk of injury.

Unsafe Lane Splitting by the Motorcyclist
While legal, lane splitting done at high speeds, during fast-moving traffic, or in unpredictable ways may expose the rider to liability in the event of an accident.

Final Thoughts

If you or someone you know has been injured while lane splitting, the facts matter. Liability depends on a number of circumstances—including the behavior of both the motorcyclist and surrounding drivers. At our firm, we help clients assess fault, gather evidence, and pursue rightful compensation

Call us today at (949) 771-4188 to discuss your case and to learn how we can help.