Abstract: The present invention is related to a swinging disturbing current board for car and particularly to a swinging disturbing current board for car which is characterized in the disturbing current board body capable of swinging the rear edge thereof to raise up about 30°-60° in an inclined state from its original slightly horizontal state and to light the third stop light disposed on the said rear edge through the actuation of a disturbing current board driving mechanism installed in a holder on one side of the said current board body when starting up the car and foot-operating the brake while driving the car forward, and mainly consists of a disturbing current board body and left and right holders wherein a disturbing current board driving mechanism is disposed on a fixed beam in the holder on one side thereof and such driving mechanism comprises a motor with a decelerating device, an upper chain wheel, a lower chain wheel, a chain, a relay, an upper limit switch, a lower limit switch and a starting capa