When are headlights required to be used during the day?

Headlights are required to be used during the day primarily when visibility conditions are poor, such as in situations involving fog, heavy rain, or snow. This requirement is essential for ensuring that vehicles are visible to other road users, enhancing safety during adverse weather conditions. Poor visibility can occur at any time of the day, not just at night, making it crucial for drivers to turn on their headlights whenever the environment hampers clear sightlines.

While headlights are often used at night for safe driving, the proactive use of headlights during the day in poor visibility can significantly reduce the risk of accidents. It's also worth noting that in certain areas or regions, there may be additional regulations recommending the use of headlights during the day as a precautionary measure, which varies with local laws. However, the central principle remains that the primary purpose of daytime headlight use is to improve visibility in situations where weather or environmental factors necessitate it.