the loading area is very close to the ground and slung between the trucks. Passenger-carrying types Charabanc (rail) An early type of passenger car with wooden benches. It was used for second and third class travel. Coach The coach is the most basic type of passenger car, also sometimes referred to as "chair cars". Open/Saloon Compartment Composite Two main variants exist. Open coach In one variant, an "open coach" has a central aisle; the car's interior is often filled with row upon row of seats as in a passenger airliner. Other arrangements of the "open" type are also found, including seats around tables, seats facing the aisle (often found on mass transit trains since they increase standing room for rush hour), and variations of all three. Seating arrangement is typically [2+2], while the hard seat in China has [3+2] arrangements. 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. Some cars have reclining seats to allow for easier sleeping by passengers not traveling in a sleeping car. Compartment In another variant, "closed" coaches, "corridor" coaches or "compartment" cars have a side corridor to connect 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. Earlier designs of UK coaching stock had additional door or doors along their length, some supporting compartmentalised carriages. Compartment coach The compartment coach is similar to a corridor coach but without the corridor. Each compartment is totally separated from the other compartments, with no movement between them. Entry and exit from each compartment is only possible when stopped at a station. Composite "Composite" coaches are also known. These are mixed-class cars featuring both open seating and compartments. One such coach is the Composite Corridor, introduced for British Rail in the 1950s; though such coaches existed from early pre-grouping days, at the end of the 19th century. In India, normal carriages often have double height seating, with benches (berths), so that people can sit above one another (not unlike a bunk bed). In other countries, true