One of the reasons culture has become lax is due to sheer population, which means we have anonymity in sheer numbers. In a small town, if this lady runs by a school bus, everyone knows by the next trip to the barber shop. In a larger community, this is not possible. So really what the judge is doing (poorly I think) is bringing back that old social dynamic.
I think "I have to wear this sign because I did xyz" would have been sufficient.