In what conditions should a driver turn on their headlights during the day?

Turning on headlights during the day is vital for ensuring visibility and safety in various driving conditions. In inclement weather, such as rain or snow, visibility can be significantly reduced due to factors like rain obscuring vision, snow accumulating on the road, or creating glare. When headlights are activated, they help illuminate the road, making it easier for the driver to see and also making the vehicle more visible to other drivers.

This practice enhances safety by letting other motorists know you are present, which is crucial in low-visibility conditions. Many states have laws requiring headlights to be on in such weather to promote safer driving environments. Thus, using headlights during rain or snow is an important safety measure for both the driver and other road users.