Sharing the road safely starts with the rules
Riding a bike in Stockton or anywhere in the Central Valley means sharing the road with cars and trucks. California bicycle laws set duties for riders and for the drivers around them. Knowing them can help you ride safely and understand what happened if there is a crash.
The information here is general information about California law and is not legal advice for your situation.
Riders have the rights and duties of drivers
Vehicle Code section 21200 gives a person riding a bike on a road the same rights and duties as a driver, with some exceptions. That means riders follow signals, signs and right of way rules too.
Riding while impaired is also against the law under Vehicle Code section 21200.5.
Where California bicycle laws say to ride
Vehicle Code section 21202 says a rider moving slower than traffic should ride as close to the right side as practicable. The law lists exceptions.
- Passing another bike or vehicle
- Preparing for a left turn
- Avoiding hazards such as debris or parked car doors
- Riding in a lane too narrow to share safely
Riders go with traffic, not against it. Where a bike lane exists, Vehicle Code section 21208 generally requires slower riders to use it, with similar exceptions.
The 3 foot passing law
Vehicle Code section 21760, the Three Feet for Safety Act, sets the passing rule. A driver passing a rider going the same way must leave at least 3 feet between the car and the bike or rider.
Since January 1, 2023, a driver must also change lanes to pass when another lane in the same direction is available and it is safe. When 3 feet is not possible, the driver must slow down and pass only when it will not endanger the rider.
A violation is a $35 fine. If the driver injures the rider while breaking this rule, the fine is $220.
Lights and reflectors at night
Vehicle Code section 21201 sets equipment rules for riding in the dark. A bike needs a white front light, a red rear reflector or red light and white or yellow reflectors on the pedals or shoes. It also needs side reflectors or reflective tires.
Since January 1, 2026, an e-bike must show the rear red reflector or light at all hours, not only at night.
Dooring and parked cars
Dooring happens when someone opens a car door into a rider’s path. Vehicle Code section 22517 bars opening a door on the traffic side unless it is reasonably safe. It also bars leaving a door open longer than needed.
Crossing with the walk signal
Since January 1, 2024, Vehicle Code section 21456 lets riders cross with a walk signal unless a bicycle signal directs otherwise. Riders must still yield to people and vehicles already in the intersection.
Helmets and e-bikes
Riders under 18 must wear a properly fitted helmet. Our post on California helmet laws covers the details. E-bikes follow many of the same road rules, with some extra rules by class.
Our post on California traffic laws covers other recent rule changes.
What to do after a bike crash
Your health comes first.
- Move to safety and call 911 if anyone is hurt
- Get the driver’s name, insurance and plate number
- Take photos of the scene, the bike and your injuries
- Get witness names
- See a doctor, even if you feel fine
- Keep the bike, helmet and clothing as they are
Fault can be shared in a bike crash. Our post on comparative fault explains how that works, and our car accident claims page covers the claim process after a crash with a car.
Which direction California bicycle laws say to ride
Riding against traffic is a common mistake. Vehicle Code section 21650.1 says a bike on a roadway or a highway shoulder must travel in the same direction as vehicles.
Riding with traffic makes a rider easier for drivers to see and predict. It also matters later if fault is in dispute.
When a rider can leave the right edge
Section 21202 gives riders room to move left in certain cases. These include passing, preparing for a left turn and approaching a place where a right turn is allowed.
A rider may also move left to avoid hazards such as debris, parked cars, pedestrians or a lane too narrow to share. On a one way road with two or more lanes, a rider may ride near the left edge.
Helmet rules for young riders
Vehicle Code section 21212 requires anyone under 18 to wear a properly fitted and fastened helmet on a bike. The rule also covers scooters, skateboards and skates. It also covers passengers in a bike seat or trailer.
The helmet must meet ASTM or CPSC standards. A violation is an infraction with a fine of no more than $25.
What parents should know
A parent or guardian can be held responsible for the fine with the child. A first charge can be dismissed under the conditions the section lists.
The section also lets a family avoid the fee by showing proof of a proper helmet and a completed local bike safety course within 120 days, when such a course is available.
How California bicycle laws play out in common crashes
The examples below are simplified illustrations and not real cases. They show how the rules can affect who was at fault.
Example of a close pass
Imagine a driver passes a rider on a two lane road with only a foot of space. The rider swerves and falls.
Section 21760 required the driver to give at least 3 feet or slow down and pass only when safe. A witness or a helmet camera can help show how close the pass was.
Example of a door opened into a rider
Now imagine a rider in a bike lane next to parked cars. A driver opens a door without looking, and the rider hits it.
Section 22517 bars opening a door on the traffic side unless it is reasonably safe. The person who opened the door may be at fault.
Example of a rider going the wrong way
Suppose a rider is hit while riding against traffic at night without a front light. Sections 21650.1 and 21201 both apply.
The driver may still share fault, but the rider’s own violations can reduce what the rider recovers under comparative fault.
Deadlines after a bike crash
Most injury lawsuits in California must be filed within two years under Code of Civil Procedure section 335.1. A crash caused by a road defect or a public vehicle has a shorter path.
Under Government Code section 911.2, an injury claim against a public entity must be presented within six months. Potholes and broken pavement on public roads can fall under this rule.
Practical steps riders can take before every ride
Many crashes cannot be prevented by the rider. A few habits can still lower the risk and help later if a claim arises.
- Check lights and reflectors before riding at dusk or after dark
- Wear a helmet that fits snugly, whatever your age
- Ride with traffic and stay visible at intersections
- Leave room for opening doors when passing parked cars
- Consider a small camera on the bike or helmet
- Carry ID and an emergency contact in case you are hurt
Why a camera can matter
Close passes and dooring often happen in seconds. Video can show the distance, the speed and who had the right of way.
Save the file right away after any crash. Many cameras record over old footage automatically.
Frequently asked questions
How much room must a driver give a bike?
At least 3 feet, and a lane change when another lane is available and safe.
Can I ride on the sidewalk?
State law leaves sidewalk riding to cities and counties. Check your local rules.
Do adults need helmets?
State law requires helmets for riders under 18. Wearing one at any age is a good idea.
Can I ride against traffic if it feels safer?
No. Vehicle Code section 21650.1 requires a bike on a roadway or shoulder to travel in the same direction as traffic.
What is the fine for a child riding without a helmet?
Vehicle Code section 21212 sets a fine of no more than $25, and a parent can share responsibility for it.
Does a rider without lights lose the right to recover?
Not always. A rider’s own violation can reduce recovery under comparative fault, but the driver may still share fault.
Questions after an injury
If you were hurt and want to understand your options, our office can answer your questions about personal injury claims in general. Call (209) 300-6117 for a free consultation.