Abstract: Signal flags for use in motor racing which are shown or waved by section observers on racing courses and respectively consist of a colored flag cloth as well as a flag rod provided with a handle. On the flag rod of each flag at least one light emitting element is provided, preferably in the form of an electric blinking lamp which emits light with a high intensity in the color of the flag cloth. Further, the invention relates to a signalling system for motor racing including such signal flags and comprising a common accommodation with mounts for the individual signal flags, an additional blinking device including blinking lamps emitting light in the colors of the signal flags as well as an electronic control device for operating the signal flags and the blinking device.