Certain vehicles not to be treated as motor vehicles
6.—(1) For the purposes of the Road Traffic Orders—
(a)a mechanically propelled vehicle being an implement for cutting grass which is controlled by a pedestrian and is not capable of being used or adapted for any other purpose;
(b)any other mechanically propelled vehicle controlled by a pedestrian which may be prescribed for the purposes of this Article; and
(c)an electrically assisted pedal cycle of such a class as may be so prescribed,
is to be treated as not being a motor vehicle.
(2) In paragraph (1) “controlled by a pedestrian” means that the vehicle either—
(a)is constructed or adapted for use only under such control; or
(b)is constructed or adapted for use either under such control or under the control of a person carried on it, but is not for the time being in use under, or proceeding under, the control of a person carried on it.