Final answer:
When driving in heavy fog during the day, it is important to use your low beam headlights to increase your visibility. Using high beam headlights is not recommended as they can create glare and reduce visibility. Adjusting speed, increasing following distance, and using turn signals are also important safety measures.
Step-by-step explanation:
When driving in heavy fog during the day, it is important to use your low beam headlights to increase your visibility. Low beam headlights help illuminate the road ahead without causing glare or reducing your own visibility.
Using high beam headlights is not recommended in heavy fog as they reflect off the fog droplets and create a bright wall of light, making it harder to see. This can be dangerous for you and other drivers.
Remember to adjust your speed, increase following distance, and use your turn signals in heavy fog to ensure safe driving.