When must you change to low beams when meeting an oncoming vehicle at night?

The appropriate distance to switch to low beams when approaching an oncoming vehicle at night is 500 feet. This practice is essential for ensuring that you do not blind the driver of the oncoming vehicle with your high beams, which can obstruct their vision and create a hazardous driving condition.

Maintaining a safe distance while using low beams allows both drivers to see clearly and helps to prevent accidents. It is important to be mindful of the illumination intensity from your headlights when driving at night, and adjusting to low beams well in advance enables you to comply with traffic safety regulations and promotes safe driving etiquette.