What action should you take if you encounter fog while driving?

When encountering fog while driving, it is essential to reduce speed and use low-beam headlights. Reducing speed helps improve your reaction time and allows you to better navigate through low visibility conditions caused by fog. It also lessens the chances of hydroplaning if the fog is accompanied by moisture on the road.

Using low-beam headlights is crucial because they point downward and provide better illumination of the road immediately in front of your vehicle, which can help you see road signs, lane markers, and other vehicles. High-beam headlights, on the other hand, can reflect off the water droplets in fog and create a glare, which can severely reduce visibility instead of improving it.

Turning on hazard lights can indicate to other drivers that you are experiencing difficulties, but stopping on the roadway can be dangerous unless absolutely necessary. Thus, the combination of reducing speed and using low-beam headlights is the most effective and safe response when driving in foggy conditions.