When should you use low beam headlights during nighttime driving?

Using low beam headlights during nighttime driving is especially important in conditions such as fog, rain, or snow. These weather conditions can create reduced visibility, and low beams are designed to cast a shorter, wider beam of light that helps illuminate the road directly in front of the vehicle without reflecting back off the precipitation or fog in the air. High beam headlights can reflect off moisture, causing glare that can impede visibility even further. Employing low beam headlights in these situations enhances safety by ensuring the driver can see adequately without blinding other drivers or being blinded themselves.

While low beams are also appropriate in well-lit areas and can be necessary at certain times on local roads, the critical need for low beams in adverse weather conditions makes that option the most accurate in this context.