California Driver License (DMV) Written Practice Test

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Ace your California DMV written test! Prepare for the exam by practicing hundreds of multiple-choice questions covering traffic laws and road signs. Boost your knowledge, gain confidence, and increase your chances of passing the test on your first try.

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Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

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You must use headlights when:

  1. Driving in the daytime

  2. There is fog

  3. You activate your turn signals

  4. You want to show courtesy to other drivers

The correct answer is: There is fog

Using headlights during daytime is unnecessary as there is already sufficient natural light. Activating turn signals does not require the use of headlights as they are separate functions. Showing courtesy to other drivers is not a valid reason for using headlights. Therefore, the only appropriate option is B, when there is fog. Fog can greatly reduce visibility, making it important to use headlights in order to be more visible to other drivers on the road.

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