Moving Day in Boston ought to be declared a holiday since no one can get to work anyway. The streets are chockablock (and the blocks are chockastreet) with vat migrating herds of UHauls.
To make matters worse, I can’t tell if this sign means what it says or means the opposite of what it says:
I’m leaning toward the opposite: You don’t threaten to tow cars that are in motion. And if it just meant to say “No standing” for any car, it wouldn’t have put in the clause about moving cars. I think.