A carriage, often (but not always) built with an open plan arrangement and having a specialised use such as dining saloons, family saloons, day saloons, club saloons, invalid saloons and picnic saloons. The key feature is that usage of these involved the payment of supplementary fares or charges. The connotation is "up-market" and such carriages were originally intended for first class passengers, or even Royalty. The first open Sleeping Saloons were "shared" by several passengers, but later they were made with individual compartments.