Operator’s field of vision

(1) No person shall operate a unit of mobile equipment when the field of vision is restricted unless he has inspected the area into which the equipment is to be moved or is directed by a signal person who is located in a safe position and who is in continuous contact with the equipment operator. Disabled vehicles to give (2) Where a vehicle is disabled or parked on the travelled portion of a roadway, a warning to approaching traffic shall be given by means of flashing lights, flares, lamps or reflectors.