California Driver License (DMV) Written Practice Test

Question: 1 / 570

You must use headlights when:

Driving in the daytime

There is fog

Using headlights during daytime is unnecessary as there is already sufficient natural light. Activating turn signals does not require the use of headlights as they are separate functions. Showing courtesy to other drivers is not a valid reason for using headlights. Therefore, the only appropriate option is B, when there is fog. Fog can greatly reduce visibility, making it important to use headlights in order to be more visible to other drivers on the road.

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You activate your turn signals

You want to show courtesy to other drivers

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