Which of the following can increase light glare while driving at night?

Light glare while driving at night can be affected by a variety of environmental and vehicle-related factors. Snow, for instance, is reflective and can significantly enhance light glare when illuminated by headlights from other vehicles. This reflection can create a blinding effect, making it difficult for drivers to see clearly.

A clean windshield, while generally beneficial for visibility, can also contribute to glare under certain conditions. When the windshield is clean, it allows more light through, and if there are bright lights coming from other vehicles or streetlights, this increased brightness can result in more glare.

Headlight brightness is another significant factor. Brighter headlights can lead to increased glare, especially if they are improperly aimed or if they are of a high-intensity discharge type. These bright lights can create a blinding effect for oncoming drivers and can accentuate the glare experienced by a driver at night.

Therefore, each of these factors—snow, a clean windshield, and headlight brightness—can contribute to increased light glare, making the correct response encompass all of them.