[vacri]

I had that problem visiting California, where so many signs also list the law that applies. Even the little cart to take people to the top of Alcatraz has a sign "don't board moving cart", seemingly simple advice, then it lists the relevant law. The effect felt a bit police-statey, I found.

[CaliCancer]

This post contains characters known to the State of California to cause cancer and birth defects or other reproductive harm.

[mturmon]

It may feel police-statey, but it's lawyers, plaintiffs, juries, and unintended consequences that are responsible.