A. At the sign
A. At the sign
B. 20m after the sign
C. 50m after the sign
D. 100m after the sign
The speed limit starts where the sign is placed on the road. This means that if you are coming from a higher speed into a lower speed limit area you must slow down before you reach the sign. If you are in a lower speed limit area and are coming up to a higher speed limit area then you must wait until you reach the sign before you speed up.