Council logic

In a nearby street, there are parking restrictions intended to allow a window of opportunity for the street sweeper.   These one-hour "no parking" restrictions apply one day for one side, a different day for the other side.  They're rigorously enforced, even though the sweeper doesn't come every week or if it has passed  (the expression "easy pickings" comes to mind), so woe betide the resident or visitor who has a lapse of memory.

In the same street, the parked cars represent quite an obstacle to the use of the the rubbish trucks with their mechanised arms.   It would be logical, would it not, to collect the rubbish on one of the days when the restriction applies for the street sweeper?   Nope, you've guessed it - the bins are emptied on one of the other three working days!