What should drivers use when visibility is low due to weather?

Using low beams is essential when driving in conditions of reduced visibility, such as rain, fog, or snow. Low beams are designed to cast a shorter, wider beam of light onto the road, which helps illuminate the area directly in front of the vehicle without causing glare for other drivers. This is particularly important in fog or heavy rain, where high beams can reflect off the moisture in the air and create a blinding effect for both the driver and oncoming traffic.

In contrast, while fog lights serve a specific purpose by providing a wider and shorter range of illumination closer to the ground, they are typically used in conjunction with low beams rather than as replacements. High beams can exacerbate visibility issues in poor weather conditions because their light can scatter off precipitation, impairing the driver's ability to see. Driving without lights altogether would be unsafe and illegal in low visibility situations. Thus, low beams are the most effective and safest option for navigating through adverse weather conditions.