The horizontal speed limit sign located in a lane affects...

The horizontal speed limit sign located in a lane affects...
A)heavy vehicles only.
B)each and every lane on the carriageway.
C)only the vehicles travelling in the lane in which the sign is located.Correct
If the figure is located in a lane delimited by longitudinal lines, continuous or broken, the prohibition applies exclusively to vehicles travelling in that lane.
If the lanes were not delimited, the restriction would affect the entire carriageway.