How far should you be from an oncoming vehicle before dimming your high beams?

Dimming your high beams when approaching an oncoming vehicle is an essential practice to prevent glare that can blind or distract other drivers. The correct distance to dim your high beams is within 100 feet of an oncoming vehicle. This guideline is based on the need to ensure safety and visibility for all road users. By dimming your high beams at this distance, you give the oncoming driver time to adjust their own vehicle's lights and maintain a clear line of sight without being impeded by excessive brightness. Practicing this rule contributes to safer nighttime driving for everyone on the road.