Are U-turns pemitted on bends where visibility is reduced?

For safety reasons, reversing is prohibited in the following cases:

• In any situation where we cannot verify the safety of the maneuver as in this case because we cannot verify the visibility of the bend;
• At level crossings, in tunnels, underpasses and sections of track affected by the tunnel signal, where it is dangerous;
• On motorways and dual carriageways, unless we find indications to do so with a level change;
• On all sections of the road where overtaking is prohibited, as for example a bend where visibility is reduced.