Wisconsin Temps Permit Practice Test – Prep, Questions & Study Guide

Using low beam headlights and reducing speed is the best approach when driving in foggy conditions. Fog can significantly impair visibility, and the low beams are designed to provide adequate illumination without causing glare that can reflect off the fog, which would further obscure your vision. Additionally, reducing speed allows for greater reaction time to sudden obstacles or changes in the road, as visibility can quickly diminish in foggy conditions.

In contrast, turning off all lights might create a dangerous situation where you cannot see or be seen by other drivers. Using high beam headlights can illuminate the fog, but the light tends to reflect off the water droplets in the fog, creating a blinding effect that makes it even harder to see. Maintaining regular speed is risky, as the reduced visibility in fog requires drivers to adjust their speed to ensure safety and control on the road.