Railroad car

From Wikipedia, the free encyclopedia

A railroad car or railway carriage (or, more briefly, car or carriage, not to be confused with railcar), also known as an item of rolling stock, is a vehicle on a railroad (or railway) that is not a locomotive — one that provides another purpose than purely haulage, although some types of car are powered. Cars can be coupled together into a train, either hauled by one or more locomotives or self-propelled.

Most cars carry a "revenue" load, although "non-revenue" cars exist for the railroad's own use, such as for maintenance-of-way purposes. Such uses can generally be divided into the carriage of passengers and of freight.

"Revenue" cars are basically of two types: passenger cars, or coaches, and freight cars or wagons.

1 Passenger cars
2 Freight cars
3 See also
4 Non-revenue cars
5 Military cars
6 External links

[edit] Passenger cars

Image:Dtrail1.jpg

Main article: Passenger car

Passenger cars, or coaches, vary in their internal fittings:

In standard gauge cars, seating is usually three, four, or five seats across the width of the car, with an aisle in between (resulting in 2+1, 2+2 or 3+2 seats) or at the side. Tables may be present between seats facing one another. Alternatively, seats facing the same direction may have access to a fold-down ledge on the back of the seat in front.

If the aisle is located between seats, seat rows may face the same direction, or be grouped, with twin rows facing each other. Sometimes, for example on a commuter train, seats may face the aisle.
If the aisle is at the side, the car is usually divided in small compartments. These usually contain 6 seats, although sometimes in second class they contain 8, and sometimes in first class they contain 4.

Cars usually have either air-conditioning or windows that can be opened (sometimes, for safety, not so far that one can hang out), or sometimes both. Toilet facilities are also usual, though the setup varies (see passenger train human waste disposal).

Other types of passenger car exist, especially for long journeys, such as the dining car, parlor car, disco car, and in rare cases theater car. Observation cars were built for the rear of many famous trains to allow the passengers to view the scenery. These proved popular, leading to the development of dome cars multiple units of which could be placed mid-train, and featured a glass-enclosed upper level extending above the normal roof to provide passengers with a better view.

Sleeping cars outfitted with (generally) small bedrooms allow passengers to sleep through their night-time trips, while couchette cars provide more basic sleeping accommodation. Long-distance trains often require baggage cars for the passengers' luggage. In European practice it is common for day coaches to be formed of compartments seating 6 or 8 passengers, with access from a side corridor. In the UK, Corridor coaches fell into disfavor in the 1960s and 1970s partially because open coaches are considered more secure by women traveling alone.

Another distinction is between single- and double deck train cars. An example of a double decker is the Amtrak superliner.

Image:Amtrak Cascades cars.jpg

A "trainset" (or "set") is a semi-permanently arranged formation of cars, rather than one created 'ad hoc' out of whatever cars are available. These are only broken up and reshuffled 'on shed' (in the maintenance depot). Trains are then built of one or more of these 'sets' coupled together as needed for the capacity of that train.

Often, but not always, passenger cars in a train are linked together with enclosed, flexible gangway connections that can be walked through by passengers and crew members. Some designs incorporate semi-permanent connections between cars and may have a full-width connection, making in essence one longer, flexible 'car'. In North America, passenger equipment also employ tightlock couplings to keep a train reasonably intact in the event of a derailment or other accident.

Many multiple unit trains consist of cars which are semi-permanently coupled into sets; these sets may be joined together to form larger trains, but generally passengers can only move around between cars within a set. This "closed" nature allows the separate sets to be easily split to go separate ways. Some multiple-unit trainsets are designed so that corridor connections can be easily opened between coupled sets; this generally requires driving cabs either set off to the side or (as in the Dutch Koploper) above the passenger compartment. These cabs or driving trailers are also useful for quickly reversing the train.

Rail transport passenger equipment
Head-end equipment	Baggage · Express reefer · Horse car · RPO · TPO
Passenger-carrying equipment	Coach · Couchette · Diner · Dome · Lounge · Observation · Sleeper / Pullman
Miscellaneous equipment	Combine · Troop kitchen / Troop sleeper

[edit] Freight cars

Image:Boxcar railbox.jpg

Freight cars or (UK: "wagons") exist in a wide variety of types, adapted to the ideal carriage of a whole host of different things. Originally there were very few types of car; the boxcar (UK: "van"), a closed box with side doors, was among the first.

Common types of freight cars include:

Lorry, An open railroad car (gondola) with a tipping trough, often found in mines.
Coil cars
Autoracks - (also called auto carriers) specialized multi-level cars designed for transportation of unladen automobiles
Boxcars (or vans) - box shape with roof and side or end doors
Airplane parts car
Refrigerator cars (or, colloquially, Reefers), a refrigerated subtype of boxcar
Flatcars (or flat) for larger loads that don't load easily into a boxcar. Specialised types such as the depressed-center flatcar exist for truly outsize items or the Schnabel car for even larger and heavier loads. With the advent of containerised freight, special types of flatcar were built to carry standard shipping containers and semi-trailers.
Gondolas, railroad cars with an open top but enclosed sides and end, for bulk commodities and other goods that might slide off. Some (well cars) allow containers to be stacked two high (double stacked).
Hoppers are gondolas with bottom dump doors for easy unloading of things like coal, ore, grain, cement, track ballast and the like. There are two varieties: open top and closed top.
Covered hoppers
Tank cars for the carriage of liquids
Slate wagons - specialized freightcars used to transport slate
Stock cars for the transport of livestock
Well cars - specialized cars designed for carrying shipping containers. These have a very low bottom floor to allow double stacking, and articulated 3- and 5-car sets are common.
CargoSprinter, a self propelled container flatcar.
Transporter wagon
Roll-block
Modalohr road trailer carriers

The vast majority of freight cars fit into the above categories.

Rail transport freight equipment
Enclosed equipment:	Autorack · Boxcar · Coil car · Container · Covered hopper · Refrigerator car · Roadrailer · Stock car · Tank car
Open equipment:	Flatcar · Gondola · Hopper car · Schnabel car
Non-revenue equipment:	Caboose

[edit] See also

Rail transport

Operations
Stations
Trains
Locomotives
Rolling stock
History
Terminology
By country
Disasters
Modelling
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[edit] Non-revenue cars

Cabooses (or guard's vans or brakevans) which attach to the rear of freight trains to order to watch the train and assist in shoving moves.
Maintenance of way (MOW) cars, for the maintenance of track and equipment
Handcars, which are powered by their passengers
Railroad cranes
Rail car mover — some of which resemble HiRail trucks.
Road-rail vehicle

[edit] Military cars

Military armoured trains use several types of specialized cars:

artillery — fielding mixture of guns and machine guns
infantry — fielding machine guns, designed to carry infantry units
machine gun — dedicated to machine guns
anti-air — equipped with anti-air guns
command — similar to infantry wagons, but designed to be a train command center
anti-tank — equipped with anti-tank guns, usually in a tank gun turret
platform — unarmoured, with purposes ranging from transport of ammunition or vehicles, through track repair or derailing protection to railroad ploughs for railroad destruction.
troop sleepers