As a general rule, where is overtaking prohibited?

Overtaking is normally prohibited in places where visibility is reduced, even if there is no specific sign, such as on bends with no visibility or crests with reduced visibility. In the case of pedestrian crossings, it must be considered that it is difficult to predict when a pedestrian is going to cross the road; therefore, in these places speed must be reduced, and overtaking is prohibited both on the crossing and in its vicinity, except when done at such a reduced speed that it allows the driver to stop in time if there is a risk of running someone over.