Which of the following is a requirement when driving in foggy conditions?

Using fog lights when available is crucial in foggy conditions because these lights are specifically designed to enhance visibility in limited visibility situations. Fog lights emit a lower and wider beam of light, which helps illuminate the road immediately in front of a vehicle without causing glare to the driver or impairing the visibility of other road users. This is particularly important in fog, where standard headlights can reflect off the fog, creating a blinding effect.

Driving at high speed to pass through quickly entirely ignores the increased stopping distance required in low visibility, which can significantly increase the likelihood of an accident. Using high beam headlights is also not advisable in fog, as they can create a glare by reflecting off the fog droplets, making it harder to see. Keeping windows fully opened does not have a direct benefit in improving visibility; instead, it may create distractions or noise that could impede the driver’s focus.

In summary, the use of fog lights enhances safety and visibility when navigating through foggy conditions, making it the most appropriate choice.