Abstract: A cross member on a receiving vehicle which is coupled to a following vehicle, is located relative to a leading vehicle. The location of the cross member is tracked during an unloading operation so the leading vehicle avoids the cross member when unloading material into the receiving vehicle.

Abstract: A hitch point where a receiving vehicle is coupled to a following vehicle is located relative to a leading vehicle. The trajectory or route of the following vehicle is detected and a dynamic model estimates a location of a receiving area in the receiving vehicle relative to the leading vehicle based on the trajectory or route of the following vehicle and the location of the hitch point relative to the leading vehicle.

Abstract: A disposable bedpan liner in accordance with one aspect of the invention includes an elongated liquid impervious flexible sleeve having oppositely disposed open ends. The mouth of the liner is defined at one end of such sleeve and has first handle means associated therewith to allow the mouth to be opened and brought into juxtaposition with the seat portion of a bedpan and to be closed after use by a patient. A second handle means is connected adjacent the other of the sleeve ends so that when the sleeve is folded over on itself and the first and second handle means are brought and held together, a purse-like structure is provided. The thus folded over sleeve forms a pouch for containing waste matter with release of the second handle means allowing the sleeve to unfold and the waste matter to pass outwardly through the above-noted other one of the open ends.