Which vehicles are allowed to park here?

This sign indicates a parking area with a specific feature: vehicles must park with the right side wheels on the curb or edge, typically because the parking area is sloped or narrow. The sign often relates to certain weight or vehicle type restrictions as specified by additional information or markings.

In this question, vehicles allowed to park here are those with a permissible total mass up to 2.8 tons and motorcycles. Heavier vehicles over 3.5 tons are not permitted because the area or the parking method (parking with wheels on the curb) is unsuitable or unsafe for larger, heavier vehicles.

Your answer is correct because both lighter vehicles up to 2.8 t and motorcycles may use this parking spot, but heavier vehicles cannot. Remember, German parking signs can include rules about vehicle weight and method of parking such as parking partially on the curb. Always look for additional signs or road markings that specify these conditions.