Driving in California 2026 — Lane Splitting Legal & Strictest Phone Fines

Driving in California

Driving in California (CA) means navigating Mediterranean coast, desert interior, and snowy mountain passes. The state capital is Sacramento, and the road network ranges from busy urban freeways to remote rural two-lanes. Handheld phone use behind the wheel is banned.

Speed Limits in California

Maximum speed limit is 70 mph on posted rural freeways. Two-lane undivided highways default to 55 mph. Trucks over 10,000 lbs limited to 55 mph.

Speeding fines in California escalate quickly. School zones and construction zones carry extra penalties, and some areas use automated speed enforcement.

Traffic Laws in California

Cell Phone Law: Hands-free required for all drivers. Handheld use prohibited. Drivers under 18 prohibited from all cell phone and electronic device use. Police in California enforce this as a primary offence, meaning they can pull you over for this alone.

Seatbelt Law: Primary enforcement for all occupants. Both drivers and all passengers must be belted in California.

Right Turn on Red: Permitted in California after a complete stop, unless a sign says otherwise. Yield to pedestrians and cross traffic.

Move-Over Law: California requires drivers to change lanes or reduce speed when passing stopped emergency vehicles, tow trucks, or maintenance vehicles.

Headlights: Required from sunset to sunrise, during inclement weather, and when visibility is less than 1,000 feet.

Child Restraints: Children under 2 must be in a rear-facing car seat. Children under 8 must be in a car seat or booster seat in the back seat. Children 8 and older or 4 feet 9 inches tall may use a seatbelt.

DUI Laws in California

The legal BAC limit in California is 0.08% for drivers 21 and over. For drivers under 21, the limit is 0.01%. Commercial vehicle drivers face a nationwide 0.04% limit.

Penalties in California for a first DUI include fines, possible jail time, licence suspension, and alcohol education. California participates in the Interstate Driver’s License Compact, so a conviction here follows you to your home state.

Tyre Requirements in California

California does not mandate winter tyres, but appropriate tyres for the conditions are always your responsibility. Chain controls (R1, R2, R3) enforced on mountain passes and highways during winter storms. R2 requires chains on all vehicles except 4WD/AWD with snow tires.

Studded Tyres: Allowed November 1 through April 30.

Minimum Tread Depth: The legal minimum in California is 0.0625 inches (2/32"), the federal floor across all US states. Tyre experts recommend replacing at 4/32" for adequate wet-weather grip. At 2/32", stopping distance on a wet road at 60 mph is dangerously long.

For California’s winters, tyres rated M+S or bearing the 3PMSF snowflake symbol provide measurably better cold-weather grip than summer tyres.

Insurance and Equipment in California

California requires all drivers to carry liability insurance. Keep proof in your vehicle. If you are stopped without it, penalties include fines and possible licence suspension.

Required vehicle equipment in California: functioning headlights, brake lights, turn signals, at least one rearview mirror, a horn, windshield wipers, and valid registration plates. Check California’s specific window tint limits before adding aftermarket tint.

Licence Requirements for Visitors to California

Visitors from other US states can drive in California with their valid home state licence. International visitors should carry both their home licence and an International Driving Permit (IDP) obtained before travelling. The IDP is a translation, not a replacement — carry both documents.

If you relocate to California, you will need to obtain a California driver’s licence within the state’s residency grace period. This typically involves a vision test, written knowledge test, and sometimes a road test.

Toll Roads in California

Toll facilities in California increasingly use cashless electronic tolling. Rental cars may come with a transponder option, but the daily fee adds up quickly. Consider getting your own transponder if driving extensively in California.

Seasonal Driving in California

Driving conditions in California are shaped by Mediterranean coast, desert interior, and snowy mountain passes.

Seasonal preparation for California:

• Winter: carry an ice scraper, snow brush, jumper cables, and a bag of sand or cat litter for traction. Keep an emergency blanket and extra warm layers in the vehicle
• Summer: check tyre pressure and coolant levels before long drives
• Year-round: keep an emergency kit with water, torch, phone charger, first aid, and snacks
• Check California’s DOT website for real-time road conditions and travel advisories

Renting a Car in California

Most rental agencies in California require drivers to be at least 21. Under-25 surcharges are standard. If you hold a foreign licence, bring your IDP and confirm acceptance when booking.

Inspect the rental car thoroughly before driving away. Document scratches and dents with photos. Familiarise yourself with the controls — headlights, wipers, hazard lights — before you leave the lot. Confirm the fuel type (most US rental cars use regular unleaded gasoline).

Check whether your personal auto insurance or credit card covers rental cars in California. International visitors without US coverage should purchase the agency’s liability and collision options.

Emergency Contacts in California

Dial 911 for any emergency in California — police, fire, or medical. For non-emergency roadside assistance, contact the California Highway Patrol (CHP) at (800) 835-5247.

After a crash in California: stop, call 911 for injuries, move out of traffic if possible, exchange information with the other driver, take photos, and file a police report if required. Never admit liability at the scene.

If your car breaks down in California, pull off the road as far as safely possible, activate hazard lights, and set up reflective triangles if you have them. Stay in your vehicle on busy highways and call for assistance.

Driving Tips for California

Practical advice for driving in California:

• Follow posted limits. California enforces speed limits, stop signs, and lane restrictions actively. Fines increase in school and construction zones.
• Watch for pedestrians and cyclists. Yield at crosswalks and leave at least three feet when passing cyclists in California.
• Signal your intentions. Use turn signals well before turning or changing lanes in California.
• Stay alert. Long drives across California can be tiring. Stop every two hours or 100 miles to rest.
• Wildlife hazard: deer in rural areas and tule elk on Point Reyes highways.
• School zones. Slow down in California school zones during school hours. Passing a stopped school bus with flashing lights is a serious offence in every US state.