What action should be taken to ensure headlights are effective while driving at night?

To ensure headlights are effective while driving at night, it is vital to clean headlights regularly. Over time, headlights can accumulate dirt, grime, and oxidation, which can significantly dim their brightness and reduce visibility. Regular cleaning helps maintain their clarity and luminosity, allowing for better illumination of the road ahead and making it easier to see obstacles, road signs, and other vehicles.

In contrast, using high beam lights at all times can cause glare for oncoming drivers and is not appropriate in areas with frequent traffic. Driving with fog lights on is typically reserved for specific weather conditions like fog or heavy rain and does not replace the need for clean headlights. Keeping windows closed might reduce outside noise or airflow but does not contribute to the effectiveness of headlights while driving at night.