California Seatbelt Law: Legal Requirements and Penalties

Wearing a seat belt is one of the simplest ways to reduce the risk of serious injury in a car accident. That’s why the California seat belt law requires nearly every driver and passenger to buckle up before a vehicle is driven on a public road.

For most people, the law is straightforward: wear your seat belt or risk a citation. But seat belt use can also become an important issue after a crash. Insurance companies sometimes argue that failing to wear a seat belt worsens an injury, even if another driver caused the accident.

Whether you’re trying to understand the seat belt law in California, wondering what the cost of a ticket is, or have questions about how the law affects an injury claim, here’s everything you should know.

Who Must Wear a Seat Belt Under California Law?

California law requires drivers and passengers to wear properly fastened seat belts while a vehicle is in operation. 

In most situations, the law applies to:

• Drivers,
• Front-seat passengers, and
• Rear-seat passengers who are 16 years of age or older.

The requirement applies whether you’re driving your own vehicle or riding in someone else’s. It also extends to taxis and many rideshare vehicles when seat belts are provided.

The law requires more than simply having a seat belt available. It must be worn correctly, with the lap belt positioned across the hips and the shoulder belt crossing the center of the chest.

Wearing the shoulder belt behind your back or placing the lap belt across your stomach reduces its effectiveness and may not satisfy the legal requirement.

Vehicle owners are also responsible for ensuring seat belts function properly. A damaged or inoperable restraint system can create both safety concerns and legal issues.

California Seat Belt Law for Kids

Children are subject to different restraint requirements because adult seat belts are designed for larger bodies. A properly fitted child restraint significantly reduces the risk of serious injury during a collision.

The California seat belt law for kids generally requires:

• Children younger than two years old to ride in a rear-facing car seat unless they exceed the applicable height or weight limits, and
• Children under eight years old to ride in an appropriate child restraint or booster seat in the rear seat.

Under current California law, children who are at least eight years old or at least 4 feet 9 inches tall may use a properly fitting seat belt.

Parents often ask when it’s appropriate to move a child from a five-point harness to a booster seat. While California law establishes minimum requirements, safety experts generally recommend keeping children in a forward-facing seat with a five-point harness until they reach the manufacturer’s height or weight limits.

Once a child outgrows the harness, a properly fitted booster seat helps position the vehicle’s seat belt correctly across the hips and chest.

Upcoming Changes to California’s Child Seat Belt Law

California has adopted changes to its child passenger restraint laws that will take effect on January 1, 2027.

Under current law, children who are at least 8 years old or 4 feet 9 inches tall may use a standard seat belt if it fits properly. Beginning in 2027, however, simply meeting the age or height requirement will no longer be enough for children ages 8 to 15.

Instead, California will require these children to properly fit an adult seat belt using a five-step fit test. The test evaluates whether:

• The child sits all the way back against the vehicle seat,
• Their knees bend naturally at the edge of the seat,
• The lap belt rests low across the hips or upper thighs,
• The shoulder belt crosses the center of the chest and shoulder rather than the neck or face, and
• The child can remain in that position throughout the trip.

If the child does not meet all five requirements, a booster seat or other appropriate child restraint may still be necessary. These changes are intended to improve seat belt fit and reduce injuries because adult seat belts are designed for adult-sized occupants.

How Much Is a Seat Belt Ticket in California?

Although California law sets the base fine at $20 for a first offense and $50 for each subsequent offense, those amounts do not reflect the total cost of the citation. State and county penalty assessments, court fees, and other mandatory surcharges are added to the base fine.

As a result, the total amount typically paid is approximately:

• $162 for a first seat belt violation,
• $200 for each subsequent violation, and
• $490 for not properly restraining a child under 16.

While the financial penalties may seem relatively modest compared to other traffic offenses, wearing a seat belt is ultimately about more than avoiding a ticket. Proper seat belt use significantly reduces the risk of serious injury in a crash and may also become an issue if you later pursue a personal injury claim.

Can Not Wearing a Seat Belt Affect a Car Accident Claim?

Many people assume that failing to wear a seat belt means they cannot recover compensation after an accident. That is not what California law says.

California follows a pure comparative negligence system. Under this rule, an injured person may still recover compensation even if they contributed to their own injuries.

The key distinction is that not wearing a seat belt usually does not cause the accident itself. Another driver may still be entirely responsible for causing the collision. However, the insurance company may argue that some injuries could have been reduced if a seat belt had been worn properly.

For example, if another driver runs a red light and causes a collision, that driver may still be legally responsible for the crash. The question then becomes whether the injured person’s failure to wear a seat belt increased the severity of the injuries. These are separate issues, and insurance companies often try to blur the line between them.

How Insurance Companies Use Seat Belt Arguments

Insurance adjusters look for any factor that may reduce the value of a claim. Seat belt use is one issue they frequently examine. 

They may review:

• The police report,
• Medical records,
• Vehicle damage,
• Statements from witnesses, and
• Crash reconstruction evidence.

Their goal is often to argue that some injuries would have been less severe had the occupant been properly restrained. Medical evidence, expert testimony, and the specific facts of the collision all play an important role in determining whether seat belt use actually affected the injuries suffered.

Speak with a Long Beach Car Accident Lawyer

Insurance companies often look for ways to reduce the amount they pay after a collision. Questions about seat belt use are just one example.

At The Beliz Law Firm, Long Beach car accident attorney Michael Beliz personally reviews every case to determine how California law applies to the specific facts of the accident. Rather than making assumptions, he evaluates the evidence, explains your legal options, and works directly with clients throughout the claims process.

If you’ve been injured in a collision and have questions about California’s seat belt law or your right to compensation, contact The Beliz Law Firm today for a free consultation.

Frequently Asked Questions About California Seatbelt Law

Who Is Required to Wear a Seat Belt Under California Law?

In most situations, California law requires drivers and passengers aged 16 or older to wear a properly fastened seat belt while the vehicle is being operated.

How Much Is a Seat Belt Ticket in California?

The base fine is $20 for a first offense and $50 for subsequent offenses, although additional court assessments and fees typically increase the total amount owed to $162 and $200.

What Is the California Seat Belt Law for Kids?

Children must ride in age- and size-appropriate car seats or booster seats until they meet California’s legal requirements to use a standard seat belt safely.

Can I Recover Compensation If I Wasn’t Wearing a Seat Belt?

Yes. California’s comparative negligence laws do not automatically prevent recovery. However, the insurance company may argue that failing to wear a seat belt contributed to the severity of your injuries.

Should I Contact a Car Accident Lawyer in Long Beach After a Crash?

If you suffered injuries in a collision, speaking with a Long Beach car accident lawyer can help you understand how California law applies to your situation and whether you may be entitled to compensation.

Legal References Used to Inform This Page

To ensure the accuracy and clarity of this page, we referenced official legal resources during the content development process:

• California Seatbelt Law, Vehicle Code §27315
• Digital Democracy AB435
• California Office of Traffic Safety – Click It or Ticket
• California Civil Code §1714

Michael A. Beliz, Esq., established The Beliz Law Firm in the spring of 2011.  Michael has been a practicing attorney since 2006 and worked for two of the most prominent plaintiff’s personal injury law firms in Southern California.  He has worked on and handled hundreds of cases as an attorney in all types of personal injury cases, including vehicle accidents, pedestrian accidents and dog bites, and successfully recovered millions of dollars for his clients.

Rate this Post

Loading...