A dynamic signaling system of a braking manoeuvre of a vehicle, the vehicle being of the type comprising: - a brake pedal, and - right and left side brake lights and/or a third brake light the system comprising: - an illumination system, comprising a plurality of lighting elements, intended to be implemented in each one of the right and left side brake lights and / or on the third brake light; - a microprocessor, for receiving a vehicle deceleration signal; and - a decelerometer communicated with the microprocessor for providing the microprocessor with the vehicle deceleration signal; wherein the microprocessor is programmed for continuously obtaining, from the vehicle deceleration signal, both speed of the vehicle and loss of speed of the vehicle with respect to an initial speed of the vehicle corresponding to a moment in which the braking manoeuvre starts by the brake pedal being pushed; the microprocessor is programmed so as to determine a sequence of consecutive and additive activation of the lighting elements, while the brake pedal is being pushed along the braking manoeuvre, by illuminating additional successive lighting elements as the loss of speed of the vehicle, with respect to the initial speed of the vehicle, increases; and the microprocessor is programmed for determining sensitivity values indicating the loss of speed, with respect to the initial speed of the vehicle, which has to be reached for illuminating one or more additional lighting elements, as well as for ordering the sequential illumination of the lighting elements according to the sensitivity values. - a brake pedal, and - right and left side brake lights and/or a third brake light the system comprising: - an illumination system, comprising a plurality of lighting elements, intended to be implemented in each one of the right and left side brake lights and / or on the third brake light; - a microprocessor, for receiving a vehicle deceleration signal; and - a decelerometer communicated with the microprocessor for providing the microprocessor with the vehicle deceleration signal; wherein the microprocessor is programmed for continuously obtaining, from the vehicle deceleration signal, both speed of the vehicle and loss of speed of the vehicle with respect to an initial speed of the vehicle corresponding to a moment in which the braking manoeuvre starts by the brake pedal being pushed; the microprocessor is programmed so as to determine a sequence of consecutive and additive activation of the lighting elements, while the brake pedal is being pushed along the braking manoeuvre, by illuminating additional successive lighting elements as the loss of speed of the vehicle, with respect to the initial speed of the vehicle, increases; and the microprocessor is programmed for determining sensitivity values indicating the loss of speed, with respect to the initial speed of the vehicle, which has to be reached for illuminating one or more additional lighting elements, as well as for ordering the sequential illumination of the lighting elements according to the sensitivity values. - an illumination system, comprising a plurality of lighting elements, intended to be implemented in each one of the right and left side brake lights and / or on the third brake light; - a microprocessor, for receiving a vehicle deceleration signal; and - a decelerometer communicated with the microprocessor for providing the microprocessor with the vehicle deceleration signal; wherein the microprocessor is programmed for continuously obtaining, from the vehicle deceleration signal, both speed of the vehicle and loss of speed of the vehicle with respect to an initial speed of the vehicle corresponding to a moment in which the braking manoeuvre starts by the brake pedal being pushed; the microprocessor is programmed so as to determine a sequence of consecutive and additive activation of the lighting elements, while the brake pedal is being pushed along the braking manoeuvre, by illuminating additional successive lighting elements as the loss of speed of the vehicle, with respect to the initial speed of the vehicle, increases; and the microprocessor is programmed for determining sensitivity values indicating the loss of speed, with respect to the initial speed of the vehicle, which has to be reached for illuminating one or more additional lighting elements, as well as for ordering the sequential illumination of the lighting elements according to the sensitivity values. the microprocessor is programmed for continuously obtaining, from the vehicle deceleration signal, both speed of the vehicle and loss of speed of the vehicle with respect to an initial speed of the vehicle corresponding to a moment in which the braking manoeuvre starts by the brake pedal being pushed; the microprocessor is programmed so as to determine a sequence of consecutive and additive activation of the lighting elements, while the brake pedal is being pushed along the braking manoeuvre, by illuminating additional successive lighting elements as the loss of speed of the vehicle, with respect to the initial speed of the vehicle, increases; and the microprocessor is programmed for determining sensitivity values indicating the loss of speed, with respect to the initial speed of the vehicle, which has to be reached for illuminating one or more additional lighting elements, as well as for ordering the sequential illumination of the lighting elements according to the sensitivity values.