Abstract: A rotatable reflector which serves as a warnig device adapted to be mounted on the front area of a motorcycle to enable other vehicle operators, pedestrians, and the like, to more readily observe a motorcycle as it approaches. The reflector includes a rotatable shaft with a plurality of reflective bodies mounted thereon rotatable by air passing thereover as the motorcycle proceeds at low or high speed with means being provided to prevent rotational speed of the reflector beyond a predetermined maximum so that the reflector characteristics will not become diminished when the device rotates at an excessive speed. The reflector may be mounted on the front fender of a motorcycle with a suitable mounting bracket and be illuminated for use at night by the use of fiber optics associated with the motorcycle headlight for transmitting light for impingement upon the rotatable reflective, multicolored bodies.