When is it permissible to use high-beam headlights?

Using high-beam headlights is permissible on dark, open roads without oncoming traffic because high beams provide increased visibility in areas where there are no streetlights and minimal illumination from other vehicles. This enhances your ability to see farther ahead and spot potential hazards, such as obstacles or animals on the roadway.

In contrast, well-lit urban areas typically have sufficient street lighting, making the use of high beams unnecessary and potentially blinding to other drivers. During foggy conditions, using high beams can actually worsen visibility because the light reflects off the fog, creating a glare. Finally, using high beams at all times is not practical or safe, as they can create visibility issues for other drivers, especially when there is oncoming traffic or when following another vehicle closely.