When must dipped headlights be activated during the day?

Dipped headlights should be activated during the day when visibility is less than 200 meters. This is crucial for ensuring that your vehicle is visible to other road users in conditions where sight is significantly impaired, such as during fog, heavy rain, or snow. The primary purpose of using dipped headlights in low-visibility situations is to enhance safety by increasing your vehicle's visibility to others, thereby reducing the risk of accidents. The law mandates this practice to promote safer driving conditions, especially in adverse weather.

Other situations, such as sunny weather, heavy traffic, or urban areas, may not necessarily warrant the use of dipped headlights unless visibility is compromised or specific local regulations require them. In clear and bright conditions, using dipped headlights is generally unnecessary and may even cause glare for oncoming drivers.