Abstract: An improved method of determining the weight of the contents of a container involves using a roll-off truck's own container loading system to remove a container from a number of weight measure elements. Another improved method of weighing the contents of a container involves employing support elements which enable a container that is engaged with the number of weight measurement elements to be lowered out of engagement with such weight measurement elements. An improved weighing apparatus includes a number of weight measurement elements and a number of support elements. Such an improved weighing apparatus can be retrofitted onto an existing truck to provide an improved truck on which such methods can be performed.