leaving it open "but not going to enforce it" at night? basically what he says is we left it this way so we can get around your rights to unreasonable search and seizure. if a law is to ridiculous to enforce it's too ridiculous to be on the books.
hopefully they don't plan on changing the Portland system (probably will since it's state law, but they only mention Salem/Kaiser) unless the hours are posted here if you can see a kid the school zone speed applies