She only got 30 days revocation of her driver’s license. The judge might have told her she was going to get 6 months revocation unless she agreed to wear that “i am an idiot” sign. I would definitely take such an offer even though you say it is not legal form of punishment.
“She only got 30 days revocation of her driver’s license. The judge might have told her she was going to get 6 months revocation unless she agreed”
I assumed something of the sort. But then that’s coercion. They can’t, or shouldn’t, induce you to give up constitutional protection by threatening something worse. Of course she’ll never sue, because she got off easy.