My daughter lives on a street that has parking on one side only and spots are in short supply. They alternate parking one side for the first half month on one side and the second half month he other side.
She noted that the fire hydrants are only on one side and eliminate 3 o 4 paring spots.
She tried to petition her neighbours to go with parking all month on the side without hydrants, picking up a few more spots and eliminating some confusion at switchover.
She gave up after getting a bunch of "What if's"