When is it appropriate to use high beams while driving?

Using high beams is appropriate on open roads with no oncoming traffic because they provide increased visibility for the driver. High beams illuminate the road more effectively, allowing the driver to see further and better identify potential hazards, such as wildlife or pedestrians, particularly in rural areas where there are fewer lights. This is crucial for ensuring safe navigation in low-light conditions.

In contrast, using high beams in heavy fog can create glare and reduce visibility, as the light reflects off the moisture in the air. In urban areas with street lighting, high beams are generally unnecessary since street lights already illuminate the roads adequately. Finally, when driving behind another vehicle, high beams can blind the driver ahead, making it unsafe to use them in that scenario. Thus, open roads with no oncoming traffic are the ideal conditions for utilizing high beams effectively and safely.