What type of headlights is required when driving in poor visibility conditions?

When driving in poor visibility conditions, low beam headlights are required because they provide adequate illumination without creating excessive glare that can impair the vision of oncoming drivers or your own. Low beam headlights are specifically designed to light up the road directly in front of the vehicle while minimizing the light's impact on the drivers of other vehicles.

In fog, rain, or snow, using high beam headlights can reflect off the moisture in the air and create a bright glare, which can severely reduce visibility instead of improving it. Fog lights serve a similar purpose but are typically used in conjunction with low beam headlights to enhance visibility in specific conditions. Parking lights are not suitable for driving as they do not provide enough illumination for safe navigation in poor visibility situations.