Chester Vermont has Naughty or Nice (https://www.cbsnews.com/news/christmas-traffic-vermont-radar-speed-signs-tell-drivers-if-theyre-naughty-or-nice-based-on-how-fast-theyre-going/) speed radar signs.
They probably do a fairly adequate job at catching the eye, albeit in a festive way. The MUTCD compliance crowd has been having a field day with this setup.
I don't much care. Flashing speed signs are what they are, and I consider them a nuisance, but the word that's displayed with the number is relatively irrelevant.