What should you do if you encounter fog while driving?

Using low-beam headlights is the appropriate action to take when encountering fog while driving. Low-beam headlights are designed to provide better visibility in conditions with reduced visibility, such as fog, rain, or snow. They illuminate the road directly in front of the vehicle without reflecting off the fog, which can cause glare and further impair vision.

High-beam headlights can actually worsen visibility in foggy conditions because the light reflects off the moisture in the air, creating a blinding effect. Driving with just fog lights may not be sufficient for safe navigation, as they are intended to complement low-beam headlights but are usually not powerful enough to provide the necessary illumination on their own. Stopping immediately can be dangerous and is generally not advisable, as it can lead to rear-end collisions or other accidents if drivers behind you are not aware of your sudden halt.