Are you obliged to exercise particular caution when driving in the fog?

In the video you are driving on a road outside town in thick fog: oncoming cars and signs appear out of the white only when they are close. Driving in conditions of reduced visibility requires particular caution. The answer is: yes.

The Road Traffic Act states that a driver is obliged to exercise particular caution when driving in conditions of reduced visibility caused by fog, precipitation or other causes, and a driver of a power-driven vehicle must switch on dipped headlights or front fog lights. You drive at a speed that lets you stop within the section of road you can see, and you increase your following distance - in fog an obstacle appears suddenly, and braking on wet asphalt takes longer.

Legal basis: Art. 30 para. 1 point 1 letter a and Art. 19 para. 1 of the Road Traffic Act (Prawo o ruchu drogowym)