What distance should you maintain from the vehicle in front in the presented situation?

In the visible traffic situation in a built-up area, the general safety principle applies. According to Art. 19 para. 2 pt. 3 of the Road Traffic Act, a driver is obliged to maintain a distance necessary to avoid a collision in the event of braking or stopping of the vehicle ahead. The regulations do not impose a fixed value in metres here, but require adapting the distance to the speed and traffic conditions.