When must you lower your high beam headlights to low beam?

The requirement to lower high beam headlights to low beam when within 500 feet of an oncoming vehicle is established to ensure the safety and visibility of all drivers on the road. High beams can create significant glare for other drivers, particularly at night, which can impair their ability to see clearly and react appropriately. By switching to low beams when approaching an oncoming vehicle within this distance, you help maintain a safer driving environment.

Additionally, it’s important to note that there are specific regulations about using high beams when following another vehicle as well. While it's primarily focused on oncoming traffic in this instance, remaining within 500 feet allows for a clear line of sight for both drivers. This distance strikes a balance between maximizing visibility for the driver using high beams and minimizing the risk of dazzling or blinding other drivers.