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.

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!

Practice this question and more.

When should you use your headlights while driving?

In fog
During the day
During the night
All of the above

The correct answer is: All of the above

You should use your headlights while driving in various situations, including in fog, during the day, and at night. Using headlights in fog enhances visibility for both the driver and other vehicles on the road. Even during the day, headlights can increase the visibility of your vehicle, making it easier for other drivers to spot you on the road. And of course, using headlights at night is necessary for safe driving due to the lack of natural light. So, all of the options listed (A, B, C) require the use of headlights while driving, making option D the correct answer.