How far away must you be from an oncoming vehicle to switch to low beams?

Answer: C — 500 feet

When driving at night or in low-visibility conditions, it is important to use the appropriate headlights to ensure safety for both yourself and other drivers. The requirement to switch to low beams when there is an oncoming vehicle is set to prevent blinding other drivers with your high beams. In Nevada, the law stipulates that you must dim your high beams when you are within 500 feet of an approaching vehicle. This distance is intended to allow for safe visibility for both drivers, as low beams are less intense and reduce glare, making it easier for oncoming drivers to see the road and navigate safely. This regulation is crucial for maintaining safety on the road and preventing accidents that could occur from impaired vision due to bright lights.