Question

When a heavy fog occurs you should:

a) use high beams for best visibility
b) park off to the right side of the road with your parking lights on
c) park at a rest area or truck stop until the fog has lifted
d) use low beams and fog lights, if equipped

Answer 1

In heavy fog, you should use low beams and fog lights to improve visibility without causing glare, as high beams will reflect back and make seeing more difficult.

Step-by-step explanation:

When a heavy fog occurs, the safest option is to use low beams and fog lights, if equipped (choice d). Using high beams, as in choice a, can cause light to be reflected back at you, increasing glare and making it harder to see. Parking off to the side of the road (choice b) can be dangerous unless you're well off the road and visible to other drivers.

If the conditions are too unsafe, it may be best to park at a rest area or truck stop (choice c) until visibility improves. However, the immediate response should be to use low beams and fog lights, as they help improve visibility by illuminating the road without causing glare.

High beams should not be used in heavy fog because they reflect the light back towards the driver, reducing visibility.

Parking off to the right side with parking lights on or waiting at a rest area until the fog has lifted are not recommended, as these actions may pose a hazard to other drivers.

Therefore the correct answer is d) use low beams and fog lights, if equipped.