When should a driver dim their headlights to avoid blinding an oncoming vehicle?

A driver should dim their headlights when an oncoming vehicle is within 500 feet. This practice is essential to prevent blinding the driver of the oncoming vehicle. High beams are intense and can significantly impair the other driver's visibility, increasing the risk of a collision. Dimming the headlights at this distance allows both drivers to see clearly and reduces the likelihood of accidents due to sudden glare.

In many jurisdictions, including Texas, adhering to this guideline is not only a matter of courtesy but also a legal requirement to promote safety on the roads. This distance gives the oncoming driver sufficient time to adjust to the change in light and maintain safe visibility while approaching.