first signal light 38a second signal light 118a and third signal light 228 may as an option also be respectively connected to left turn signal lights 812 of the car through a fourth diode 800 brake lights 814 of the car through a fifth diode 805 and right turn signal lights 813 of the car through a sixth diode 803 so that when triangular frame 1a is collapsed and folded into an elongated bar shape the first and third signal lights 38a and 228a can be operated in cooperation with the turn signal lights of the automobile and the second signal light 118a can be operated in cooperation with the brake lights diodes 800 805 and 803 prevent the turn signals lights and the brake lights of the automobile from being turned on by switching unit e1 when the triangular frame 1a is erected and used as a warning sign first switch 231 and second switch 232 are normally open and first limit switch 17 and second limit switch 18 are normally closed the operation of the electrical control device of fig8 will now be described as follows when triangular frame 1a is not in use to show the disabledment breakdown of the automobile it is collapsed and folded into an elongated bar shape and first limit switch 17 is turned off in an open position as shown in fig8 when the driver wants to erect the.