20 questions from the California Driver's Handbook. Pick an answer to see the rule behind it.
1. What does a flashing DON’T WALK signal indicate for a pedestrian?
Answer: Do not start crossing the street because the signal is about to change. The handbook states that during a flashing DON’T WALK signal, pedestrians should not start crossing because the signal is about to change.
California Driver's Handbook, page 29: “Flashing DON’T WALK or Flashing Raised Hand Do not start crossing the street. The traffic signal light is about to change.”
2. How long can your driving privilege be suspended if you are involved in a collision without proper insurance coverage?
Answer: Up to four years. The handbook specifies that lack of proper insurance during a collision results in a suspension lasting up to four years.
California Driver's Handbook, page 62: “Your driving privilege will be suspended for up to four years if you are in a collision and do not have proper insurance coverage.”
3. What is the legal Blood Alcohol Concentration (BAC) limit for a driver operating a vehicle that requires a commercial driver’s license?
Answer: 0.04%. The handbook specifies that drivers with a commercial driver’s license must maintain a BAC below 0.04% to be considered legally sober.
California Driver's Handbook, page 60: “0.04% or higher if you drive a vehicle that requires a commercial driver’s license.”
4. What is the legal Blood Alcohol Concentration (BAC) limit for a driver who is currently on DUI probation?
Answer: 0.01%. Drivers on DUI probation are held to a stricter standard, becoming legally impaired at a BAC of 0.01% regardless of their age.
California Driver's Handbook, page 60: “0.01% or higher at any age if you are on DUI probation.”
5. When approaching a work zone with cones or drums, how should you merge?
Answer: Merge as soon as it is safe without crossing the cones or drums. Drivers are instructed to merge safely while ensuring they do not cross over the barriers guiding traffic through the zone.
California Driver's Handbook, page 41: “Merge as soon as it is safe without crossing the cones or drums.”
6. How far ahead must you be able to see to determine if headlights are needed due to darkness?
Answer: 1,000 feet away. The rule specifies that headlights are required when visibility is limited to seeing only up to 1,000 feet away.
California Driver's Handbook, page 8: “When it is too dark to see from 1,000 feet away.”
7. Which of the following vehicles is exempt from the strict rules regarding carrying alcohol or cannabis products in the vehicle?
Answer: A bus. The handbook lists buses, taxis, campers, and motorhomes as exceptions to the strict container rules, while standard vehicles like sedans and trucks are not listed as exceptions.
California Driver's Handbook, page 59: “This law does not apply if you are a passenger in a bus, taxi, camper, or motorhome.”
8. Why do large vehicles and trucks often swing wide when making a turn?
Answer: Because their rear wheels follow a shorter path than their front wheels. The handbook explains that the difference in turning paths between front and rear wheels causes large vehicles to swing wide to complete turns safely.
California Driver's Handbook, page 37: “When a vehicle turns, the rear wheels follow a shorter path than the front wheels. The longer the vehicle, the greater the difference in the length of the turning path.”
9. What is the default speed limit on a highway unless otherwise posted?
Answer: 25 mph. The handbook establishes 25 mph as the standard speed limit when no other signs are present.
California Driver's Handbook, page 44: “The speed limit is 25 mph, unless otherwise posted.”
10. What is the minimum age requirement for a passenger accompanying a provisional driver under 18 to be exempt from the passenger restriction?
Answer: At least 25 years old. The rule allows passengers under 20 only if accompanied by a licensed driver who is at least 25 years old.
California Driver's Handbook, page 6: “With passengers under 20 years old, unless your parent or guardian or other California-licensed driver (at least 25 years old) rides with you.”
11. How far from the nearest track must you stop when a crossing device or person warns that a train is coming?
Answer: At least 15 feet. Drivers are required to stop at least 15 feet away from the nearest track when warned of an approaching train.
California Driver's Handbook, page 43: “When the crossing devices or a person warns you a train is coming, stop at least 15 feet from the nearest track.”
12. When two vehicles meet on a steep narrow road and neither can pass, which vehicle has the right-of-way?
Answer: The vehicle facing uphill. The handbook states that the vehicle facing uphill has priority because the downhill vehicle has more control when backing up.
California Driver's Handbook, page 36: “If two vehicles meet on a steep narrow road and neither vehicle can pass, the vehicle facing uphill has the right-of-way.”
13. Where should a driver stop their vehicle when pulled over by law enforcement?
Answer: Completely onto the right shoulder, even if it is a carpool/HOV lane. Drivers are required to move fully onto the right shoulder, regardless of whether it is designated as a carpool or HOV lane.
California Driver's Handbook, page 25: “Move completely onto the right shoulder, even if in the carpool/HOV lane.”
14. Under what specific condition is it permissible for a child under 8 years old to ride in the front seat of a vehicle?
Answer: If the child is in a federally-approved child passenger restraint system. The handbook specifies that children under 8 may ride in the front seat only if they are secured in a federally-approved child passenger restraint system.
California Driver's Handbook, page 55: “In some cases, children under 8 years old may ride in the front seat of a vehicle in a federally-approved child passenger restraint system.”
15. When approaching a stop sign where there is a stop sign on all four corners, what is the correct procedure?
Answer: Stop first and proceed according to right-of-way rules. The handbook instructs drivers to stop first and then follow the previously stated right-of-way rules when all corners have stop signs.
California Driver's Handbook, page 34: “If you approach a stop sign and there is a stop sign on all four corners, stop first and proceed as above.”
16. Under which condition is it permissible to drive over double solid yellow lines?
Answer: When instructed by construction signs to drive on the other side because your lane is blocked. The handbook lists specific exceptions for crossing double solid yellow lines, including when directed by construction signs due to a blocked lane.
California Driver's Handbook, page 10: “Stay to the right of these lines unless you are: • In a high-occupancy vehicle (HOV) carpool lane that has a designated entrance on the left. • Instructed by construction or other signs to drive on the other side of the road because your side is closed or blocked.”
17. Why is pavement often very slippery when it first starts to rain?
Answer: Because oil and dust on the road’s surface have not been washed away. The handbook explains that initial rain makes roads slippery because accumulated oil and dust have not yet been washed away by sufficient rainfall.
California Driver's Handbook, page 52: “When it starts to rain, the pavement can be very slippery. Slow down at the first sign of rain, drizzle, or snow on the road. This is especially true if it has been dry and hot for some time, because oil and dust on the road’s surface have not been washed away.”
18. What is the consequence for a minor who accumulates two at-fault collisions or traffic violations within the first 12 months of holding a provisional license?
Answer: The driver cannot drive for 30 days unless accompanied by a licensed adult at least 25 years old. The handbook specifies that for two violations, the restriction is a 30-day ban on solo driving unless accompanied by a qualified adult.
California Driver's Handbook, page 46: “Two at fault collisions, two traffic violation convictions, or one of each: You cannot drive for 30 days unless a licensed adult, at least 25 years old, rides with you.”
19. What is the maximum distance cargo may extend beyond the right-side fenders of a passenger vehicle?
Answer: 6 inches. The handbook limits cargo extension beyond the right-side fenders to no more than 6 inches.
California Driver's Handbook, page 44: “Not carry anything in or on a passenger vehicle which extends beyond the fenders on the left side or more than 6-inches beyond the fenders on the right side.”
20. Why are high-beam headlights discouraged when driving in heavy fog?
Answer: They reflect back and cause glare. The handbook advises using low beams because high beams reflect off the fog, creating glare that reduces visibility.
California Driver's Handbook, page 54: “High-beam headlights will reflect back and cause glare.”