Device in a vehicle for triggering a warning signal during braking

Device in a vehicle such as a car for triggering a warning signal during breaking, said device comprising a deceleration sensor (2), which as of predetermined deceleration triggers a signal, a pulse generator (6) which in dependence on the signal from the deceleration sensor generates a pulsating signal for the pulsating switching on and off of warning lights (7) on the vehicle, whereby between the deceleration sensor (2) and the pulse generator (6) a switch element (3) is arranged which maintains the connection between the deceleration sensor (2) and the pulse generator (6) for at least a period of time after the brake pedal (4) of the vehicle is operated.