What should you do if you encounter fog while driving?

When driving in fog, it is essential to use low beam headlights. High beam headlights can actually worsen visibility in foggy conditions because the light reflects off the water droplets in the fog, creating glare and reducing your ability to see. Low beam headlights, on the other hand, provide adequate illumination of the road immediately in front of your vehicle while minimizing the amount of light that hits the fog. This makes it easier to see the road and any obstacles or other vehicles ahead.

Using low beam headlights helps improve safety during foggy conditions, as it allows drivers to see better without contributing to the low visibility issue created by fog. The other actions, such as increasing speed or using high beams, are counterproductive in foggy weather, while pulling over could be a safe option if visibility is extremely poor, but it is not the first action to take when encountering fog. Therefore, using low beam headlights is the correct approach when navigating through fog.