I have examined this photo closely… and have questions about whether this is a legitimate city-sanctioned sign.
As evidence… I present this sign’s post… it does not appear to be fashioned from the same heavy-duty material typically found attached to “official street signs”.
I suspect a neighborhood busy-body with a grammar deficiency actually planted this sign in the ground without permission from the proper authorities.
I would move.
I don’t think there are any grammatical deficiencies here. In fact, I suspect a professional scooter rider to be the culprit. Ironically, Big Wheel rider Joel E. sounds like he knows a little too much about said street sign post manufacturing. I would move alright…away from Joel E. 😉