Which headlights must be used when visibility is reduced at night?

When visibility is reduced at night, the use of low beam headlights is essential because they are specifically designed to provide adequate illumination without causing glare for oncoming drivers and other road users. Low beam headlights cast a shorter, more focused light that illuminates the road immediately ahead of the vehicle, which is particularly important in dark conditions where visibility is compromised.

Using high beam headlights in such situations can lead to excessive glare, potentially blinding other drivers and creating a dangerous situation. Parking lights are not sufficient for driving in reduced visibility conditions, as they do not provide enough illumination to see the road or be seen by other vehicles. Fog lights, while helpful in certain weather conditions, should not be the primary choice for nighttime driving unless specifically needed in conjunction with low beams. Thus, low beam headlights are the appropriate and safe option for nighttime driving when visibility is reduced.