When is it appropriate to use high beam headlights?

Using high beam headlights is most appropriate on dark, open roads without oncoming traffic because these conditions allow for maximum visibility. High beams illuminate the road further ahead and widen the field of vision, which is especially useful on unlit roadways where streetlights are absent. In such scenarios, the improved light enhances the driver’s ability to spot obstacles, wildlife, or any other hazards that may not be visible with standard low beams.

In well-lit urban areas, using high beams can cause glare that distracts other drivers and is generally unnecessary due to the available street lighting. On the other hand, driving at speeds above 45 mph does not in itself necessitate the use of high beams; it is the visibility conditions that dictate when high beams should be engaged. Additionally, in foggy conditions, high beams can actually reflect off the fog particles and reduce visibility, making low beams the safer choice.