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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What are some hazards created by a mechanical breakdown?

  1. Noise pollution

  2. Smoke pollution

  3. Reduced visibility

  4. Increased speed

The correct answer is: Reduced visibility

Mechanical breakdowns can create a variety of hazards, including reduced visibility due to malfunctioning lights or windshields. Options A, B, and D are incorrect because they do not pertain to the hazards of a mechanical breakdown. Noise pollution and smoke pollution may be caused by other factors, while increased speed is a result of the malfunction and not necessarily a hazard in and of itself.

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