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.

What should you do if you must drive in a fog?

Increase your speed
Obey all traffic signs
Use your hazard lights
Slow down and turn on your headlights

The correct answer is: Slow down and turn on your headlights

It is important to slow down and turn on your headlights when driving in foggy conditions because fog can greatly reduce visibility, making it difficult to see other vehicles, objects, or potential hazards. By increasing your speed, you are not only risking a potential accident but also reducing your reaction time to any unexpected situations that may arise. Obeying traffic signs is always necessary, but in foggy conditions, it is even more important to follow traffic laws to ensure the safety of yourself and others on the road. Using your hazard lights can actually be more dangerous in fog as it can make it difficult for other drivers to tell which direction you are traveling. Slow down, use your headlights, and drive with caution when navigating through fog.