California Driver's Permit Diagnostic Quiz

California Driver's Permit Diagnostic Quiz (10 questions). Correct answers and explanations follow each question.

1. 1. You approach a police car stopped on the shoulder with its emergency signal lights flashing. What must you do?

   1. Move over into another lane and slow down as you pass. (correct)
   2. Come to a full stop until the vehicle turns off its lights.
   3. Keep your normal speed and stay in your current lane.

   Why: For a stationary emergency vehicle with hazard lights on, the rule is to move into another lane and slow down. Choice B is the trap: drivers reflex to the 'pull right and stop' response used for approaching emergency vehicles, applying that habit to a stopped scene that requires the opposite motion.

2. 2. Your signal is green but traffic ahead is stopped inside the intersection. What should you do?

   1. Pull past the crosswalk into the intersection so you keep your place at the light.
   2. Enter and inch forward until the vehicles ahead begin moving again.
   3. Wait until you can cross the intersection completely before entering. (correct)

   Why: Do not enter the intersection on a green light if you cannot get completely across before the light turns red; that is what keeps cross traffic clear when the signal changes. Drivers who read green as a command to advance no matter what pick option A, pulling past the crosswalk to hold a spot the manual never sanctions.

3. 3. What do short white T-shaped, L-shaped, or similar marks painted on the pavement along a curb indicate?

   

   1. The boundaries of angled parking spaces along the curb.
   2. The ends of on-street parallel parking spaces. (correct)
   3. The edges of a commercial loading zone.

   Why: T- and L-shaped marks sit at the corners of on-street parallel parking spaces so you can see where one space begins and the next ends. Park entirely between a pair of marks and parallel to the curb. A driver whose only curbside parking has been in striped diagonal lots picks the angled-bay choice because every painted parking guide they have used ran the full length of the bay, not just at its ends.

4. 4. A pedestrian using a white cane is at the corner preparing to cross. When must you give them the right-of-way?

   1. Only when the pedestrian is inside a marked crosswalk.
   2. Only when the pedestrian signal shows WALK for them.
   3. At all times, whether or not a signal or crosswalk is present. (correct)

   Why: Pedestrians with a white cane or guide dog carry right-of-way at every point on the road, not only inside painted lines. Choice A is the trap: drivers who apply the general 'crosswalk gives priority' rule miss that visually impaired pedestrians are protected outside marked crossings as well.

5. 5. A minor practicing on an instruction permit must drive with a California-licensed driver who is at least what age?

   1. 18
   2. 25 (correct)
   3. 21

   Why: The manual requires a minor's supervising driver during practice to be at least 25 years old. A reaches for the age set for the supervisor when the learner is an adult; readers scanning both rules together grab the lower number and miss that the manual raises the floor for minors.

6. 6. A wide solid white line separates a freeway through lane from an exit ramp at the gore. What does it require of you?

   

   1. Settle into your lane before the line; crossing it is discouraged. (correct)
   2. Cross freely between the through lane and the ramp.
   3. Crossing is prohibited and can be ticketed.

   Why: The wide solid white line at a ramp gore forms a neutral area between two paths of same-direction traffic. Settle into either the through lane or the ramp before you reach it, and stay out of the painted zone. The tempting wrong answer is the one that treats the solid white as a broken white lane line. A broken white line invites lane changes; a solid white channelizing line is drawn to hold you in the path you have already chosen, so drivers who are still deciding should decide sooner.

7. 7. You are taking the DMV knowledge test at a California field office. What testing aids does the manual let you use during the test?

   1. Only a cell phone for timekeeping.
   2. No testing aids at all. (correct)
   3. Only the California Driver's Handbook.

   Why: The manual explicitly bans testing aids during the knowledge test and names the California Driver's Handbook and a cell phone as examples of what you cannot bring in. Choice C misreads the sentence's two examples as items the rule carves out; the sentence is a ban, and those are the two aids drivers most often try to sneak in.

8. 8. A California minor practices driving on their instruction permit with a licensed adult. Where must the supervising driver sit?

   1. Close enough to take control of the vehicle if needed. (correct)
   2. Directly behind the driver, to monitor mirror checks.
   3. Anywhere in the vehicle, as long as they are 25 or older.

   Why: The supervising driver has to sit close enough to take control of the vehicle if needed. Landing on C means fastening on the age-25 supervisor figure and dropping the seating half of the same rule.

9. 9. A steady red traffic light means you must:

   1. Slow down and proceed if the way is clear.
   2. Come to a complete stop and remain stopped until the light changes, unless making a permitted right turn on red. (correct)
   3. Yield to cross traffic and then continue.

   Why: A steady red traffic light means STOP. Remain stopped until the light changes; a right turn on red is allowed only where no NO TURN ON RED sign is posted, and even then only after you stop at the stop or limit line, yield for pedestrians, and turn when it is safe. A driver picking A carries the flashing yellow signal's proceed-with-caution instruction across to the steady red, treating two signals printed near each other as one family of rules.

10. 10. How many attempts does California allow to pass the original knowledge test before you must reapply?

    1. Two attempts
    2. Three attempts (correct)
    3. Unlimited attempts

    Why: California allows three attempts on the original knowledge test before you must reapply. A test-taker who picks two attempts is usually carrying over a two-tries-and-out rule from a peer or from a state that caps the vision retest at two, rather than reading California's own cap on the knowledge test.