> Probably less than the cost of a single parking ticket.
I really doubt that, but my point is that none of us know. Design is a lot easier when you're ignorant of any cost or logistical constraints.
> As for your corner cases, there are some signs depicted with text at the bottom...
I guess it's better, but it seems like greatly more complexity in creating and managing signs for only a little benefit. At least around me those aren't corner cases: pretty much every sign would have one or more additional restrictions or exceptions. In front of my house it's two-hour parking Monday through Saturday except for residents, and no parking on Mondays during the Fall. I think that's pretty typical for DC.
I really doubt that, but my point is that none of us know. Design is a lot easier when you're ignorant of any cost or logistical constraints.
> As for your corner cases, there are some signs depicted with text at the bottom...
I guess it's better, but it seems like greatly more complexity in creating and managing signs for only a little benefit. At least around me those aren't corner cases: pretty much every sign would have one or more additional restrictions or exceptions. In front of my house it's two-hour parking Monday through Saturday except for residents, and no parking on Mondays during the Fall. I think that's pretty typical for DC.