Low beam headlights must be turned on:

During any rain, fog or smoke.
When driving between sunset and sunrise.
During the twilight hours between full night and sunrise.
All of the above.
Explanation

Low beam headlights must be used between sunset and sunrise, unless there are no other drivers or pedestrians nearby who could be blinded by high beams. They should also be used during poor weather conditions, such as fog, rain, or smoke. It is best not to use high beams in fog, as the light may reflect off the fog and impair the driver’s vision.

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