At what distance should you dim your lights when an oncoming vehicle is approaching?

Answer: A — 250 feet

When an oncoming vehicle is approaching, it is important to dim your headlights to avoid blinding the other driver. The correct distance to switch to low beams is 500 feet. This guideline ensures that you provide adequate visibility for yourself while also maintaining safety for the approaching vehicle. Using high beams at this distance can impair the vision of the oncoming driver, increasing the risk of accidents. Understanding the rules regarding headlight usage is essential for safe driving practices, particularly on dark or rural roads where visibility is crucial. Dimming your lights at the appropriate distance reflects good driving etiquette and contributes to overall road safety.