Tennessee law:
Public intoxication is a misdemeanor crime in Tennessee. (Tenn. Code Ann. § 39-17-10.)
In a public place
In general, Tennessee law defines a “public place” as one where the general public has a right of access. Interestingly, Tennessee courts consider a person who is sitting in a car on a public road to be publicly intoxicated if the person is a danger to self, others, property, or unreasonably annoying others in the vicinity.
A person who is staggering alone down a public alley could be arrested in Tennessee for public intoxication because the police could reasonably believe that the person’s intoxication presented a danger to himself due to the risk of falling.