Which driving condition requires the use of low beam headlights?

The use of low beam headlights is essential during driving conditions such as heavy rain and foggy weather for several reasons. In heavy rain, low beams help to improve visibility for the driver and make the vehicle more visible to others. When headlights are on high beam in rainy conditions, the light can reflect off the rain, creating glare and reducing visibility.

Foggy weather also necessitates the use of low beam headlights. High beams can reflect off the fog, creating a wall of light that can obscure visibility rather than enhancing it. Low beams project light closer to the road and help illuminate the surface without excessive reflection, allowing the driver to see better and navigate more safely.

Therefore, when faced with either heavy rain or fog, using low beam headlights is the appropriate choice to maintain safe driving practices.