What is a key factor in ensuring safety when driving in foggy conditions?

The key factor in ensuring safety when driving in foggy conditions is to use low beams and increase following distance. When driving in fog, visibility is significantly reduced, and using low beams helps to minimize glare and reflections that can be caused by high beams. High beams can reflect off the moisture in the fog, causing further impairment of visibility.

Additionally, increasing following distance is crucial in foggy conditions, as stopping distances are longer when the road is slippery, and reaction times may be delayed due to reduced visibility. By maintaining a greater distance from the vehicle ahead, a driver gives themselves more time to react to sudden changes in traffic or road conditions, enhancing overall safety during these challenging driving scenarios.

The other options do not effectively address the safety concerns unique to driving in fog.