3 ptsA,A1,A2Official number: 13049
Who does the speed limit expressed by these signs apply to?

Explanation
Correct answer: Motorbike rider.
The B-33 "Speed Limit" sign is placed together with the T-23a supplementary plate. This plate, displaying a motorcycle symbol, specifies that the prohibition expressed by the B-33 sign applies exclusively to riders of this particular type of vehicle. In this situation, the 50 km/h speed limit applies only to motorcyclists.