What action should be taken when driving in fog?

Using low-beam headlights is the appropriate action when driving in fog because these lights are designed to illuminate the road immediately in front of you while minimizing the reflection off the fog, rain, or snow. High-beam headlights can create a glare, making it harder to see because the light reflects off the fog, which can worsen visibility. Low-beam headlights provide better visibility without this glare, allowing drivers to see the road and any obstacles more clearly.

Additionally, reducing speed is essential in foggy conditions to account for lower visibility and the increased stopping distance required. While it's important to be aware of your surroundings, honking frequently is not a standard practice and may not help other drivers; using low-beam headlights coupled with a cautious approach is more effective in ensuring safety in these conditions.