That research is incorrect in my experience. People _do_ care why they can't park, because if the restriction is for street cleaning, and the street has alread

That research is incorrect in my experience. People _do_ care why they can't park, because if the restriction is for street cleaning, and the street has already been cleaned, you can park (in my city). If the restriction is for construction, and work hasn't begun by 10am, you can park. So you do need to know _why_ you can't park, if you want to park in certain cases.