Weight Measurements
IF it would be decided to use RFID and weigh individual cans THEN the trucks would require periodic (usually every six months) certification of the weighing mechanism to ensure the public that they are being accurately charged. This is yet another added expense and the only real benefit I can see is to the designer/provided of the RFID device and its support equipment. The best program is one that keeps it simple - the three can size will eventually work when the initial equipment cost has been recovered. I don't see using your neighbors can for any excess being a concern as you most likely (or should) know your neighbors and obtain their permission for said use.
