Final answer:
When approaching an oncoming vehicle at night, you should dim your bright headlights within 500 feet of the oncoming vehicle.
Step-by-step explanation:
When approaching an oncoming vehicle at night, you should dim your bright headlights within 500 feet of the oncoming vehicle. This is to avoid blinding the other driver and ensure their safety. By dimming your headlights, you reduce the glare and make it easier for the other driver to see the road ahead.