Visible signals

Article 109. Visible signals.
1. Drivers must indicate by means of visible signals any maneuver that implies a lateral or backwards movement of the vehicle, as well as their intention to stop it or reduce speed considerably. Such visible signals must be done sufficiently in advance of the start of the maneuver, and, if they are lights, they must remain in operation until the maneuver is finished.
2. They must take into consideration, in addition, the following:
a) lateral displacement must be signalled by using direction indicators corresponding to the direction that it is going to take, or by arm signal, in the horizontal position with the palm of the hand extended downwards, if the movement is going to be towards the side that the hand indicates, or doubled upwards, also with the palm of the extended hand, if it is going to be towards the opposite side.
In maneuvers that imply a lateral movement, it is this that is exclusively signalled, for this reason the signal must be cancelled as soon as the vehicle has adopted its new direction.
b) Reversing must be signalled with the corresponding reversing light, if fitted, or if not, by extending the arm horizontally with the palm of the hand backwards.
c) The intention to halt the vehicle or reduce speed considerably, even if imposed by traffic conditions, must be signalled either by (whenever possible) repeated use of the brake lights or by moving the arm up and down with short and fast movements.
When stopping on an autopista or autovía or in places or circumstances where visibility is greatly reduced, the presence of the vehicle must be signalled by use of the hazard warning lights if fitted, or by position lights.
If stopping or parking then, in addition, the direction indicator corresponding to the side towards it is going to move must be used, if fitted.
3. With the same aim, horn signals noted in the following Article may be replaced by use of intermittent headlight flashes, or both alternately, at very short intervals and avoiding dazzling other users.