If you are passing another vehicle, you should sound your horn when the vehicle is:
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Turning into your lane.
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Signaling a right turn.
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Going very slowly.
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All of the above.
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Explanation
Drivers must use their horn whenever it will help prevent an accident. Give your horn a light tap when you see that the vehicle you are trying to pass starts to turn into your lane.
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🟡 This question is moderately difficult — 21.2% of our users answer it incorrectly.
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This question appears in the following DMV practice tests: