Trains consist of a combination of one or more locomotives and attached railroad cars, or a self-propelled multiple unit (or occasionally a single powered coach, called a railcar). A passenger train may consist of one or several locomotives, and one or more coaches. Alternatively, a train may consist entirely of passenger carrying coaches, some or all of which are powered as a “multiple unit“.
Basically the structure is made out of metal partitions.
The basic facilities that a passengers train has are the chairs, tables, toilets, air-condition, beds in overnight trips, bicycle attachments.