The 60 km/h maximum speed sign, which vehicles does it affect?

The 60 km/h maximum speed sign, which vehicles does it affect?
A)All those driving on the road.
B)Only those driving in the lane in which the sign is located.Correct
A road marking limiting speed only affects vehicles travelling in the lane in which that marking is located, provided the lanes are delimited; if they are not, it would affect the entire carriageway.