100 California DMV Questions and Answers

The California written knowledge test trips up more first-time applicants than any other step at the DMV. You walk in thinking it’s common sense — then the questions hit you with specific speed limits on unmarked residential streets, blood alcohol thresholds for drivers under 21, and what that yellow diamond sign with the squiggly lines actually means. Don’t wing it.

This page gives you 100 real California DMV questions and answers — the same topics that show up on the actual exam. The California DMV written test has 46 questions. You need 38 correct to pass. That’s an 82% threshold — higher than most people expect.

We’ve organized these questions by topic: traffic laws, road signs, right-of-way rules, alcohol and drug laws, and special driving situations. Work through each section, then practice on our dmv permit test before your appointment.

Most people fail because they studied the wrong things, not because the test is impossible. The 46 questions pull from a defined topic list — master that list and you’ll pass. This guide covers all of it.

Questions 1–20: California Traffic Laws

Traffic law questions make up the largest chunk of the California DMV written test. Not abstract stuff — these are the rules you’ll use every single day once you’re on the road. The test hammers specific speed limits, following distances, lane use, and the consequences of breaking the rules. Know them cold.

Q1: What is the speed limit in a school zone in California unless otherwise posted?
A: 25 mph when children are present or while crossing guards are on duty.

Q2: What is the speed limit in an alley?
A: 15 mph. Flat, non-negotiable.

Q3: What is the basic speed law in California?
A: Never drive faster than is safe for current conditions. Even if the posted limit is 65 mph, rain or dense fog can make that speed illegal.

Q4: You approach a railroad crossing without gates or signals. What should you do?
A: Slow down and look both ways. Stop if a train is approaching within 1,500 feet of the crossing.

Q5: When may you drive in a bicycle lane?
A: Only when turning within 200 feet of an intersection, entering or leaving a road, or parking where it’s permitted.

Q6: How close can you park to a fire hydrant in California?
A: No closer than 15 feet.

Q7: What does a flashing red traffic light mean?
A: Treat it like a stop sign. Full stop, yield to traffic and pedestrians, then proceed when safe.

Q8: What does a flashing yellow traffic light mean?
A: Slow down and proceed with caution — no full stop required.

Q9: When may you NOT pass another vehicle on a two-lane road?
A: When there’s a solid yellow line on your side of the road, in a no-passing zone, on a hill or curve where sight distance is limited, or within 100 feet of an intersection.

Q10: What is the minimum following distance on a highway?
A: At least 3 seconds. Double it in poor conditions — bad weather, heavy rain, or reduced visibility.

Q11: When must you use your headlights in California?
A: From sunset to sunrise, and whenever visibility is below 1,000 feet — fog, rain, or dust all count.

Q12: Can you make a right turn on a red light in California?
A: Yes — after a complete stop and yielding to traffic and pedestrians, unless a sign prohibits it.

Q13: What is the freeway speed limit unless otherwise posted?
A: 65 mph. Some freeways post 70 mph where road conditions allow it.

Q14: The car behind you wants to pass. What should you do?
A: Move to the right and let them pass. California law requires you to yield to faster traffic.

Q15: You miss your freeway exit. What do you do?
A: Continue to the next exit. Never back up or reverse on a freeway on-ramp or off-ramp.

Q16: How far from a crosswalk must you stop when traffic is backed up?
A: Before the crosswalk — not in it. Pedestrians need a clear path in front of your vehicle.

Q17: When can you drive in an HOV lane?
A: When carrying the required number of occupants (usually 2+), or driving a qualifying low-emission vehicle with a special DMV permit.

Q18: How far before a turn must you signal?
A: At least 100 feet before turning.

Q19: At what age does a California driver lose provisional restrictions?
A: At 18. Until then, nighttime driving and passenger restrictions apply.

Q20: What is the speed limit in a business or residential district unless otherwise posted?
A: 25 mph. This surprises a lot of people who guess 35.

Questions 21–40: Road Signs

California uses the national sign system — but the test expects you to know shapes, colors, and meanings without hesitation. Shape matters even when you can’t read the text. Here are 20 road sign questions that regularly appear on the exam.

Q21: What shape is a stop sign?
A: Octagon — 8 sides. Unique to stop signs worldwide.

Q22: What color indicates a warning sign?
A: Yellow. Orange in construction or maintenance zones.

Q23: What does a diamond-shaped sign mean?
A: Warning ahead. Winding road, steep grade, animal crossing, school zone ahead.

Q24: What does a pentagon-shaped sign mean?
A: School zone or school crossing ahead. The pointed top is unique to school signs.

Q25: What does a rectangular white sign with black text indicate?
A: Regulatory information — speed limits, lane restrictions, parking rules.

Q26: What does a green sign tell you?
A: Guidance and direction — exit distances, city names, route numbers.

Q27: What does a blue sign indicate?
A: Motorist services nearby — gas, food, lodging, hospitals, rest areas.

Q28: What does an orange sign mean?
A: Construction or maintenance ahead. Slow down, watch for workers.

Q29: What does a yield sign look like?
A: A downward-pointing triangle with a red border and white background.

Q30: A round sign with an X and the letters RR — what is it?
A: Railroad crossing ahead. Slow down, look, and listen for trains.

Questions 41–60: Right-of-Way Rules

Right-of-way questions are where accidents happen in real life — and where the test gets very specific. Who goes first at a four-way stop when two cars arrive simultaneously? Who yields at an unmarked intersection? These aren’t always intuitive, and that’s exactly why they’re on the test.

Study these carefully. The right-of-way section consistently causes failures for applicants who rely on instinct instead of knowledge. You’ll also find these rules covered in our dmv practice test.

Q41: You arrive at a four-way stop at the same time as a driver to your right. Who goes first?
A: The driver to your right. Yield to them.

Q42: At an uncontrolled intersection with no signs or signals, who has right-of-way?
A: The vehicle that arrived first. Simultaneous arrival — the car on the left yields to the car on the right.

Q43: You’re turning left at a green light. Who has the right-of-way?
A: Oncoming traffic going straight, plus pedestrians in the crosswalk. You yield to both before turning.

Q44: A pedestrian is crossing in an unmarked crosswalk. What must you do?
A: Yield. All intersections have crosswalks in California — painted or not.

Q45: You’re merging onto a freeway. Who has right-of-way?
A: Traffic already on the freeway. You yield and match speed to merge safely.

Q46: A funeral procession is moving through a red light. What do you do?
A: Yield to the entire procession. You cannot legally break into or cut off a funeral procession, even on a green light.

Q47: An emergency vehicle with lights and siren approaches from behind. What do you do?
A: Pull to the right edge of the road and stop. Wait until the emergency vehicle passes before re-entering traffic.

Q48: You’re in an intersection waiting to turn left and the light turns red. What should you do?
A: Complete your turn — you’re already committed to the intersection. This is legal and expected.

Q49: A blind pedestrian with a white cane is waiting at a crosswalk. What must you do?
A: Stop and wait for them to completely finish crossing before you proceed. Required by California law.

Q50: Two vehicles approach a narrow bridge from opposite directions simultaneously. Who yields?
A: The vehicle that arrived later must yield to the one already on the bridge.

Questions 61–80: Alcohol, Drugs, and Safety Laws

California has strict DUI laws, and the DMV test makes sure you know the specifics. This isn’t just about the 0.08% BAC number — it covers zero-tolerance rules for minors, implied consent, what happens when you refuse a chemical test, and how different substances affect your driving ability. These questions show up on almost every exam.

Q61: What is the legal BAC limit for drivers 21 and older?
A: 0.08%. At or above this level you’re legally impaired and can be arrested for DUI.

Q62: What is the BAC limit for drivers under 21?
A: 0.01%. California’s zero-tolerance law — any measurable alcohol in your blood is a violation.

Q63: What is the BAC limit for commercial drivers?
A: 0.04%. Commercial operators are held to a stricter standard.

Q64: What is implied consent in California?
A: By driving in California, you automatically consent to chemical testing if you’re arrested for DUI. Refusing the test results in automatic license suspension — separate from any DUI charge.

Q65: If you refuse a chemical test, what happens?
A: Your license is suspended for one year for a first offense — regardless of whether you’re convicted of DUI. Refusing makes things worse, not better.

Q66: Does coffee or a cold shower sober you up?
A: No. Only time reduces your BAC. Caffeine makes you feel more alert but your impairment stays exactly the same. The liver processes alcohol at a fixed rate — about one standard drink per hour.

Q67: At what BAC level does driving ability begin to decline?
A: As low as 0.05% — even lower for some people. Reaction time, coordination, and judgment are all affected before you hit the legal limit.

Q68: Can you be charged with DUI in California below 0.08%?
A: Yes. If an officer determines you’re impaired by alcohol or drugs at any BAC level, you can be arrested for DUI.

Q69: Is it legal to have an open container of alcohol in the passenger area?
A: No. Open containers are prohibited on public roads. The container must be in the trunk or behind the last upright seat.

Q70: Can prescription medications lead to a DUI charge?
A: Yes. If a medication — even a legally prescribed one — impairs your ability to drive safely, driving under its influence is a DUI.

Questions 81–100: Special Driving Situations

The last 20 questions cover the situations where people get hurt — brake failures, skids, freeway breakdowns, flooded roads, blown tires. The DMV includes these specifically because bad decisions in emergencies cost lives. Know your response before it happens.

After working through these, check out the the California DMV for the full picture of what to expect at your appointment.

Q81: Your brakes suddenly fail on a downhill slope. What should you do?
A: Downshift to a lower gear and use the emergency brake slowly and steadily. Look for a runaway truck ramp or a safe area to steer off the road.

Q82: Your car starts to hydroplane. What do you do?
A: Ease off the gas and steer straight. Don’t hit the brakes hard — that causes a spin. Wait for the tires to regain grip.

Q83: Your vehicle starts to skid. How do you steer?
A: Into the skid. If the rear slides right, turn right. Don’t overcorrect.

Q84: You’re driving in heavy fog. What should you use?
A: Low-beam headlights. High beams reflect off fog and reduce visibility. Use fog lights if your vehicle has them.

Q85: Your vehicle breaks down on the freeway. What should you do?
A: Pull completely onto the shoulder if possible. Turn on hazard lights. Stay in your vehicle if it isn’t safe to stand outside. Call for help.

Q86: On a narrow mountain road, who yields — the car going up or the car going down?
A: The vehicle going downhill yields to the one going uphill. Backing downhill is safer than backing uphill.

Q87: How should you brake going down a long steep hill?
A: Use engine braking in a low gear, and apply steady light pressure to the brakes. Never ride the brakes continuously — they overheat and fail.

Q88: You see a car on the shoulder with hazard lights on. What does California’s Move Over law require?
A: Move one lane away from the disabled vehicle if it’s safe. If you can’t move over, slow to a reasonable speed below the limit.

Q89: Your accelerator sticks. What do you do?
A: Shift to neutral, steer to safety, brake to a stop, then turn off the engine.

Q90: Your wheels lock while braking on ice. What do you do?
A: If you have ABS, press the pedal firmly and hold — don’t pump. If no ABS, pump the brakes lightly to prevent lock-up.