How are vehicles with a permissible total mass up to 2.8 t allowed to be parked here?

This parking sign indicates that vehicles with a permissible total mass up to 2.8 tons may park only as shown in the picture — either with one side of the vehicle aligned to the curb (parallel parking) or as shown with the caravan also aligned the same way. Diagonal parking or parking at an angle to the driving direction is not allowed for small cars here.

The rule ensures orderly and uniform parking, preventing obstructive or unsafe parking patterns. It is important to follow the depicted positioning to maintain traffic flow and pedestrian safety. So, parking must be parallel to the curb or the surface, not diagonally or at an angle. Your correct choice of options 1 and 2 reflects this rule.