Does the obligation to use low-beam lights in the car apply only to the winter period?

No, the obligation to use dipped headlights when driving in conditions of normal visibility applies 24 hours a day, all year round. According to Art. 51 para. 1 of the Road Traffic Act, the purpose of this regulation is to constantly ensure better visibility of the vehicle for other road users. The green indicator light visible in the picture signals that these specific lights are switched on.