If the driver of an approaching car fails to dim his/her lights, what should you do?

When encountering an oncoming vehicle with high beams illuminated, it's essential to minimize the blinding effect of those lights while maintaining your awareness of the road. Thus, the correct action involves both watching the road ahead to ensure your focus stays where it should be—on safe navigation—and flicking your headlights. This flickering serves as a polite signal to the other driver, indicating that their bright lights are causing visibility issues.

Watching the road ahead helps you avoid distractions from the glare of the high beams, which can compromise your ability to see other vehicles, road signs, or obstacles. Flicking your headlights can prompt the other driver to adjust their lights accordingly, improving conditions for both parties. Engaging in both actions offers a comprehensive approach to maintaining safety while communicating about the light issue, making this combination the best response in such a situation.