[dazc]

Sounds ideal to me.

In the UK we have 'silent carriages' on trains but after a while the 'loud and impolite' people started to realise there was little or no enforcement so, although we still have them, they are pretty much redundant.

In Spain (where I'm living now) there seems to be a class divide (much more in the UK) regarding etiquette for loud talking and phone conversations. Local busses and trains can be sheer hell yet longer distance services and flights tend to be quite civilised.