How far must headlights illuminate persons and objects on high beam?

The correct answer is that headlights must illuminate persons and objects 350 feet away when on high beam. High beam headlights are designed to provide greater visibility in dark conditions, allowing drivers to see farther ahead of them and to detect obstacles, pedestrians, or other vehicles at a longer distance.

In Montana, as well as other states, the requirement for high beam headlights to shine at least 350 feet is significant for safety reasons. It ensures that drivers have adequate time to react to any potential hazards on the road. Understanding this distance helps ensure that drivers use their high beams appropriately and switch to low beams when approaching other vehicles or when there is oncoming traffic, which minimizes glare and promotes safer driving conditions for everyone.

The other distances listed in the choices (250, 450, and 500 feet) do not accurately reflect the established standard for high beam visibility. While 250 feet is typically a requirement for low beams and other distances might be applicable in different contexts, 350 feet is the correct standard for high beams specifically.