What is the 'it'?

“I have encountered your nemesis!”

The reader attached the following photograph:

This is, indeed, the street sign I refer to in the book as a particularly disturbing example of ambiguity. Look, to be honest it’s not even ambiguous. It’s actually meaningless. What are these “other times”? When does the 15-minute restriction not apply? Is there something wrong with my brain?

You know what? I’m just going to park there. All day. Let’s see what happens.