Useless sign near PATH station in Hoboken, NJ

Down at the intersection of Hudson Place and River Street by the PATH Station there’s a sign for eastbound traffic that reads: “No Turn on Red.”

What I don’t understand is why this is even necessary. Usually, a right turn on red is allowed in most cases (unless specified). I’ve never heard of a left turn on red anywhere. Are today’s drivers so idiotic that they would even attempt this if there was no specific signage instructing them not to?

Probably just another way to pad the sign manufacturers contract or something. What next, signs like “running over pedestrians is prohibited?”