Is it advisable to maintain the speed indicated by the sign even if road and traffic conditions are favourable?
A)Yes.Correct
B)No, if conditions are favourable the recommendation does not apply.
C)No, it is mandatory to comply with the indicated speed.
This sign recommends maintaining a speed within the indicated values provided that weather and environmental conditions are favourable. If they are not, for example due to rain, this recommendation will not apply.