between two similarly apertured lugs 7 of a connecting number 8 a vertically extending pin 9 is inserted into the registering apertures of lugs 6 and 7 so that funnel 4 can be swung about a vertical axis connecting member 8 has a horizontal bore 10 through which a pin not shown extends the pin being mounted in bearings not shown fixed to the back of the body of the motorcycle in order to support the funnel 4 at the side remote from its mounting a castor wheel 11 is fixed to the outside of the funnel each funnel is adapted to be extended up to an angle of approximately 90 u00b0 relative to the motorcycle and is adapted to be retracted completely to lie adjacent the side of the motorcycle or to extend at any angle between these positions the angle being determined by the degree necessary to by pass any obstruction e g lamp post tree or the like on the side walk the retraction or extension is effected by means of a hydraulic cylinder 12 whose piston rod 13 is articulated at 14 to the funnel 4 the cylinder 12 being articulated by means of bracket connection 15 to the body of the motorcycle the hydraulic cylinders may be connected into the hydraulic system of the motorcycle itself or they may have their own hydraulic supply line the cylinders are operated by the driver by means of a control 16 near the handle bars whenever he sees an obstruction or whenever castors 11 encounter an obstruction a dust collecting container 17 in the form of a porous sack is removably mounted on.