Coach

The coach is the most basic type of passenger car, also sometimes referred to as 'chair cars'. Two main variants exist: 'Open', with a centre corridor; the car's interior is often filled with row upon row of seats like that in a passenger airliner, other arrangements of the 'open' type are also found, including seats around tables, seats facing windows (often found on mass transit trains since they increase standing room for rush hours), as well as variations of all three. Seating arrangement is typically [2+2]. The seating arrangements and density, as well as the absence or presence of other facilities depends on the intended use - from mass transit systems to long distance luxury trains. The other variant is the 'closed' or 'Compartment car', in which a side corridor connects individual compartments along the body of the train, each with two rows of seats facing each other. In both arrangements carry-on baggage is stowed on a shelf above the passenger seating area. The opening into the cars is usually located at both ends of the carriage, often into a small hallway - which in railway parlance is termed a vestibule. [Passenger car (rail). Wikipedia]