How should a driver react to heavy fog?

Using low beam headlights and reducing speed is the correct approach for driving in heavy fog. Low beam headlights are designed to provide adequate illumination without reflecting off the fog, which can create glare and make visibility worse. When driving in these conditions, visibility can be significantly reduced, so slowing down is essential to give yourself more reaction time and to maintain control of the vehicle.

This strategy allows drivers to better assess their surroundings and respond to any obstacles or changes in road conditions that may arise unexpectedly. Patience is crucial when faced with heavy fog; navigating slowly reduces the risk of accidents.

While pulling over to wait for the fog to clear can be a safe option in severe cases, it's not always practical or necessary. Increasing speed is dangerous, as it may lead to losing control of the vehicle due to limited visibility. High beam headlights are ineffective in foggy conditions and can impair visibility for both the driver and other road users by creating a bright reflection off the fog.