What vehicle feature is helpful for increasing visibility in poor weather conditions?

Fog lights are specifically designed to improve visibility in poor weather conditions such as fog, rain, or snow. They emit a low, wide beam of light that helps illuminate the road directly in front of the vehicle without causing glare that can affect a driver's vision. This is particularly important in foggy conditions, as regular headlights, especially high beams, can reflect off the moisture in the air, creating a wall of light that hampers visibility further.

Other vehicle features listed, like high-beam headlights, are designed for clear conditions and can actually worsen visibility in fog by reflecting off the moisture in the air, similar to regular headlights. Tail lights are important for signaling to vehicles behind you but do not aid in forward visibility. Turn signals serve the purpose of indicating lane changes or turns to other drivers, but they do not enhance overall visibility in poor weather conditions.

Therefore, fog lights are the most effective feature among these options for improving visibility under challenging weather circumstances.