What should you do when driving in foggy conditions?

In foggy conditions, visibility is significantly reduced, making it essential to take extra precautions. Using low beam headlights is the appropriate choice because they provide adequate illumination without reflecting off the fog or mist, which can happen with high beam headlights. High beams can create a glare that makes it even more difficult to see.

Additionally, reducing speed is crucial in fog since driving too fast can lead to a loss of control or an inability to react to obstacles or other vehicles. By slowing down and using low beam headlights, drivers can enhance their visibility and safety while navigating through foggy conditions. This combination allows for better reaction times and reduces the risk of accidents.

While the other options may seem practical under different circumstances, they do not enhance safety effectively in fog. Hazard lights indicate a vehicle is stationary and can confuse drivers behind you if used while in motion. Keeping windows closed does not directly impact safety in fog; however, it's important for vehicle control to maintain visibility and focus on driving.