California Driver License (DMV) Written Practice Test

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Prepare for your California Driver License Test. Sharpen your skills with multiple choice questions, each accompanied by explanations. Ace your upcoming DMV written exam!

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 see a flashing blue or green light on a vehicle?

  1. Yield the right-of-way to that vehicle.

  2. Proceed with caution and maintain your speed.

  3. Increase your speed to get out of its way.

  4. Ignore the light and continue driving.

The correct answer is: Yield the right-of-way to that vehicle.

If you see a flashing blue or green light on a vehicle, it typically indicates that it is an emergency or authorized vehicle such as a police car, ambulance, or fire truck. Yielding the right-of-way in this situation is crucial for the safety of both you and the emergency vehicle. Options B and C are incorrect because they suggest maintaining or increasing your speed, which can put both you and the emergency vehicle in danger. Option D is also incorrect as ignoring the light and continuing to drive can impede the emergency vehicle's progress and potentially lead to a dangerous situation.