California driving law, answered
Every answer here comes from California Driver’s Handbook and, where the manual is silent, the California codes: Vehicle Code, Division 1: Words and Phrases Defined, Vehicle Code, Division 3: Registration of Vehicles and Certificates of Title, Vehicle Code, Division 6: Drivers' Licenses, Vehicle Code, Division 6.7: Unattended Child in Motor Vehicle Safety Act, Vehicle Code, Division 7: Financial Responsibility Laws, Vehicle Code, Division 9: Civil Liability, Vehicle Code, Division 10: Accidents and Accident Reports, Vehicle Code, Division 11: Rules of the Road, Vehicle Code, Division 11.5: Sentencing for Driving While Under the Influence, Vehicle Code, Division 12: Equipment of Vehicles, Vehicle Code, Division 17: Offenses and Prosecution, Vehicle Code, Division 18: Penalties and Disposition of Fees, Fines, and Forfeitures, Business and Professions Code §§ 25658 and 25662, Penal Code §§ 191.5 and 192, with the page or the section it is in.
Statutes fetched on 7 October 2026; manuals fetched on 14 September 2026. How the answers are made
How far from a fire hydrant must you park?
Never park within 15 feet of a fire hydrant or a fire station driveway. A fire crew has to reach the hydrant with a hose and get the engine out of the door.
Within 15 feet of a fire hydrant or fire station driveway.
As of 14 Sep 2026
How far from a crosswalk at an intersection must you park?
Never park within 20 feet of a crosswalk, marked or unmarked, or within 15 feet of a crosswalk where a curb extension is present. The gap is what lets a driver see somebody stepping off the curb in time to stop.
Within 20 feet of an unmarked or marked crosswalk, or within 15 feet of a crosswalk where a curb extension is present.
As of 14 Sep 2026
May you park in or near an intersection?
(a) Within an intersection, except adjacent to curbs as may be permitted by local ordinance.
California law, Cal. Veh. Code § 22500(a)
As of 7 Oct 2026
How far from a railroad crossing must you park?
No person shall park a vehicle upon any railroad track or within 7½ feet of the nearest rail.
California law, Cal. Veh. Code § 22521
As of 7 Oct 2026
How far from a fire station driveway must you park?
Never park within 15 feet of a fire hydrant or a fire station driveway. A fire crew has to reach the hydrant with a hose and get the engine out of the door.
Within 15 feet of a fire hydrant or fire station driveway.
As of 14 Sep 2026
How close to the curb must you park?
Begin turning the steering wheel away from the curb when your rear wheel is within 18 inches of it, and finish parallel and within 18 inches of the curb. Further out than that and your car is sticking into the lane traffic uses.
Straighten out. Begin turning the steering wheel away from the curb when your rear wheel is within 18 inches of the curb.
As of 14 Sep 2026
When must you stop for a school bus with flashing red lights?
When a school bus flashes red lights, you must stop from either direction until the children are safely across and the lights stop flashing. Children cross in front of and behind the bus, where no driver can see them coming.
When the bus flashes red lights (located at the top, front, and back of the bus), you must stop from either direction until the children are safely across the street and the lights stop flashing.
As of 14 Sep 2026
What must you do when passing a stopped emergency vehicle with flashing lights?
When approaching a stationary emergency vehicle with flashing emergency signal lights, move over and slow down. People are working beside that vehicle with their backs to the traffic going past.
When approaching a stationary emergency vehicle with flashing emergency signal lights (hazard lights), move over and slow down.
As of 14 Sep 2026
How far behind a fire truck answering an alarm may you follow?
It is against the law to follow within 300 feet of any fire engine, law enforcement vehicle, ambulance or other emergency vehicle when its siren or flashing lights are on. They stop without warning at the scene, and 300 feet is the room that keeps you out of the back of one.
It is against the law to follow within 300 feet of any fire engine, law enforcement vehicle, ambulance, or other emergency vehicle when their siren or flashing lights are on.
As of 14 Sep 2026
When must you turn on your headlights?
If you need your windshield wipers because of fog, rain or snow, you must turn on your low-beam headlights. Wipers on means the air is full of water, and water is what hides a car from the driver behind.
In adverse weather. If you need to use your windshield wipers due to fog, rain, or snow, you must turn on your low-beam headlights.
As of 14 Sep 2026
How far from an oncoming vehicle must you dim your high beams?
Dim your high-beam headlights to low beams within 500 feet of a vehicle coming toward you. High beams reach far enough to blind the driver ahead, and a blinded driver cannot stay in their lane.
Dim your high-beam headlights to low beams within 500 feet of a vehicle coming toward you or within 300 feet of a vehicle you are following.
As of 14 Sep 2026
Who must wear a seat belt?
You and your passengers must wear seat belts, and you can get a ticket if you do not. The belt is what keeps you behind the wheel, where the steering and the brakes are.
You and your passengers must wear seat belts.
As of 14 Sep 2026
When must a child ride in a car seat?
Children under 8 years old, or less than 4 feet 9 inches tall, must be secured in a child passenger restraint system in a rear seat. An adult belt across a small child crosses their neck and stomach instead of their shoulder and hips.
Children who are under 8 years old, or who are less than 4 feet
As of 14 Sep 2026
What is the legal blood alcohol limit for adult drivers?
It is illegal to drive if you have a blood alcohol concentration of 0.08% or higher and you are over 21 years old. It is the line the state draws for an adult, and a breath test settles which side you are on.
It is illegal for you to drive if you have a BAC of:
As of 14 Sep 2026
What is the blood alcohol limit for drivers under 21?
It is illegal to drive if you have a blood alcohol concentration of 0.01% or higher and you are under 21 years old. For a driver under 21 the limit is effectively nothing at all.
0.01% or higher if you are under 21 years old.
As of 14 Sep 2026
What happens if you refuse a breath or blood alcohol test?
If a law enforcement officer thinks you are driving under the influence of drugs or alcohol, they have the right to ask you to take a blood or urine test, and refusing means DMV will suspend or revoke your driving privilege for one year. Refusing does not avoid the penalty. It brings a different one that lasts a year.
If you refuse to take one, DMV will suspend or revoke your driving privilege for one year.
As of 14 Sep 2026
May you use a handheld phone while driving?
Cell phones are the main source of distracted driving, and driving while using a handheld cell phone is unsafe and illegal. A phone in your hand is a hand off the wheel and eyes off the road at the same time.
Cell phones are the main source of distracted driving. Driving while using a handheld cell phone is unsafe and illegal.
As of 14 Sep 2026
May you text while driving?
Do not send or read text messages or emails while driving. Reading a message takes your eyes off the road for about the length of a football field.
Do not send or read text messages or emails while driving.
As of 14 Sep 2026
How far before a turn must you signal?
You should signal at least 100 feet before you turn. A hundred feet is about six car lengths, which is enough warning for the car behind to ease off.
At least 100 feet before you turn.
As of 14 Sep 2026
May you turn right on a red light?
You may turn right at a red light after coming to a complete stop, unless a NO TURN ON RED sign is posted. The stop is what buys you the look, and a rolling turn means you never took it.
You may turn right at a red light after a complete stop unless there is a NO TURN ON RED sign.
As of 14 Sep 2026
May you turn left on a red light onto a one-way street?
You may turn left against a red light only when turning from a one-way street onto a one-way street, and only where no sign prohibits the turn. On two one-way streets nothing is coming at you from the left, so the turn crosses nobody.
You may turn left against a red light when you are turning from a one-way street onto a one-way street.
As of 14 Sep 2026
Where are U-turns not allowed?
Never make a U-turn at or on a railroad crossing, or on a one-way street. A car stopped across the rails has nowhere to go, and a one-way street has no other way back.
Never make a U-turn:
As of 14 Sep 2026
What is the speed limit on a residential street when no sign is posted?
The speed limit in a business or residential district is 25 mph unless otherwise posted. Those are the streets with driveways, parked cars and people stepping out between them.
Business or Residential Districts The speed limit is 25 mph, unless otherwise posted.
As of 14 Sep 2026
What is the speed limit on a highway outside town when no sign is posted?
Unless otherwise posted, the ideal maximum speed limit on most California highways is 65 mph. It is the highest number California puts on an ordinary highway, and it assumes good conditions.
Unless otherwise posted, the ideal maximum speed limit on most California highways is 65 mph.
As of 14 Sep 2026
What is the speed limit in a school zone?
The speed limit is 25 mph within 500 feet of a school while children are outside or crossing the street. A child who steps out gives you about a second, and 25 mph is what makes that second enough.
The speed limit is 25 mph within 500 feet of a school while children are outside or crossing the street.
As of 14 Sep 2026
When may you pass another vehicle on the right?
You may pass on the right only where an open highway has two or more lanes going your direction, where the driver ahead is turning left, or on a one-way street. Drivers watch their left mirror for overtakers, so a pass on the right is the one they miss.
An open highway has two or more lanes going in your direction.
As of 14 Sep 2026
May you wear headphones while driving?
It is illegal to wear a headset or earplugs in both ears while driving. A siren behind you is a warning you can only act on if you can hear it coming.
It is illegal to wear a headset or earplugs in both ears while driving.
As of 14 Sep 2026
May you have an open container of alcohol in the car?
If you carry alcohol or cannabis in your vehicle the container must be sealed and unopened, and if it is open you must keep it in the trunk or a place where passengers do not sit. Sealed in the trunk is the state’s way of saying it is not being used on the trip.
If you are carrying alcohol or cannabis in your vehicle, the container must be sealed and unopened.
As of 14 Sep 2026
How old must you be to get a learner's permit?
An applicant under 18 years old must be at least 15½ years old to apply for an instruction permit. It is the floor the state sets under the whole teen path, and nothing starts before it.
Be at least 15½ years old.
As of 14 Sep 2026
How long must you hold a learner's permit before a license?
A minor must hold an instruction permit from California or another state for at least 6 months, or turn 18 years old, before scheduling the behind-the-wheel drive test. Months of ordinary driving are what turn a set of rules into something you do without thinking.
Have an instruction permit from California or another state for at least
As of 14 Sep 2026
What hours may a provisional driver not drive?
A provisional driver may not drive between 11 p.m. and 5 a.m. during the first 12 months they hold the license. Those are the hours when a new driver is most tired and the roads carry the most trouble.
Between 11 p.m. and 5 a.m. during the first 12 months you have your license.
As of 14 Sep 2026
How many passengers may a new provisional driver carry?
A provisional driver may not carry passengers under 20 years old unless a parent, guardian or other California-licensed driver at least 25 years old rides with them. Friends in the car are the loudest distraction a new driver meets, and the rule keeps them out.
With passengers under 20 years old, unless your parent or guardian or other California-licensed driver (at least 25 years old) rides with you.
As of 14 Sep 2026
How long can you be jailed for a first drunk-driving conviction?
Additional penalties for a DUI conviction include up to six months in jail, a fine, and having your vehicle impounded with a storage fee to pay. The jail term, the fine and the storage bill all arrive on top of losing the license.
You may be sentenced to up to six months in jail.
As of 14 Sep 2026
How long is your license suspended for a first drunk-driving conviction?
If you are convicted of a DUI, DMV will suspend or revoke your driving privilege for one year, and you must complete a DUI program, file a California Insurance Proof Certificate and pay any reissue or restriction fees. The license comes back only after the program, the insurance filing and the fees are done.
If you are convicted of a DUI, DMV will suspend or revoke your driving privilege for one year.
As of 14 Sep 2026
When must you install an ignition interlock after a drunk-driving conviction?
A driver convicted of a DUI may be required to install an ignition interlock device on their vehicle. The car will not start until it has been breathed into, which is the point of it.
May be required to install an ignition interlock device (IID) on your vehicle.
As of 14 Sep 2026
How many points on your license lead to a suspension?
An adult’s license may be suspended if their record shows 4 points in 12 months. Four is not many. Two ordinary tickets and a collision reach it inside a year.
4 points in 12 months.
As of 14 Sep 2026
Who must wear a protective helmet while operating or riding a motorcycle?
(a) A driver and any passenger shall wear a safety helmet meeting requirements established pursuant to Section 27802 when riding on a motorcycle, motor-driven cycle, or motorized bicycle.
California law, Cal. Veh. Code § 27803(a)
As of 7 Oct 2026
How much distance must you leave when passing a bicycle?
Where you cannot change lanes to pass a bicyclist, allow at least three feet between your vehicle and the bicyclist. Three feet is the wobble a rider needs when they hit a pothole you never saw.
When you cannot change lanes to pass a bicyclist, allow at least three feet between your vehicle and the bicyclist.
As of 14 Sep 2026
Must a vehicle driving slower than other traffic keep to the right lane?
When another driver is close behind you and wishes to drive faster, move to the right, and if you choose to drive slower than other traffic, drive in the right lane. Letting them past costs you a few seconds and takes the pressure off your back bumper.
When another driver is close behind you and wishes to drive faster, move to the right.
As of 14 Sep 2026
What is the minimum liability insurance coverage for bodily injury or death of one person and property damage?
Your insurance must cover at least $30,000 for a single death or injury. It is the floor the state sets for what one injured person can be left with.
$30,000 for a single death or injury.
As of 14 Sep 2026
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