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Articulated cars are
rail vehicles In rail transport, a train (from Old French , from Latin , "to pull, to draw") is a series of connected vehicles that run along a railway track and transport people or freight. Trains are typically pulled or pushed by locomotives (often kn ...
which consist of a number of cars which are semi-permanently attached to each other and share common
Jacobs bogie Jacobs bogies (named after Wilhelm Jakobs,, 1858–1942, a German Mechanical engineering, mechanical Railway engineering, railway engineer) are a type of Rail transport, rail vehicle bogie commonly found on Articulated car, articulated railcars an ...
s or axles and/or have car elements without axles suspended by the neighbouring car elements. They are much longer than single
passenger car A car or automobile is a motor vehicle with wheels. Most definitions of ''cars'' say that they run primarily on roads, seat one to eight people, have four wheels, and mainly transport people instead of goods. The year 1886 is regarded as t ...
s. Because of the difficulty and cost of separating each car from the next, they are operated as a single unit, often called a ''trainset''.


Passenger cars

Articulated passenger cars are becoming increasingly common in Europe and the US. The passageways between the car elements are permanently attached. There is a safety benefit claimed that if the train derails, it is less likely to jackknife and modern construction techniques prevent telescoping. Articulated cars are not, however, a new idea. Many railways in Britain during the first half of the 20th century frequently rebuilt older, shorter cars into articulated sets, and the Great Northern Railway in Britain built suburban car sets new. In the 1930s, a number of streamlined trains built for the
London and North Eastern Railway The London and North Eastern Railway (LNER) was the second largest (after LMS) of the " Big Four" railway companies created by the Railways Act 1921 in Britain. It operated from 1 January 1923 until nationalisation on 1 January 1948. At th ...
also made use of articulated technology.


Freight cars

Manufacturers such as Gunderson make articulated, low-floor "well" cars, articulated trailer carriers and articulated autoracks. At long, Modalohr is also articulated.


Advantages and disadvantages

Articulated cars have a number of advantages. They save on the total number of wheels and
bogie A bogie ( ) (in some senses called a truck in North American English) is a chassis or framework that carries a wheelset, attached to a vehicle—a modular subassembly of wheels and axles. Bogies take various forms in various modes of transp ...
s, reducing initial cost, weight, noise, vibration and maintenance expenses. Further, movement between passenger cars is safer and easier than with traditional designs. Disadvantages primarily relate to lesser operational flexibility. For example, additional cars cannot readily be added to an articulated trainset to accommodate peaks in traffic volume and a mechanical malfunction in one car or power unit can disable an entire trainset. Furthermore, the axle load is higher compared to conventional train sets due to the reduced number of wheels and bogies.


See also

*
Articulated Light Rail Vehicle The Canadian Light Rail Vehicle (CLRV) and Articulated Light Rail Vehicle (ALRV) were types of streetcars used by the Toronto Transit Commission (TTC) from the late 1970s until the late 2010s. They were built following the TTC's decision to r ...
* Articulated trams *
Articulated vehicle An articulated vehicle is a vehicle which has a permanent or semi-permanent pivot joint in its construction, allowing it to turn more sharply. There are many kinds, from heavy equipment to buses, trams and trains. Steam locomotives were somet ...
* Illinois Central 121 * Stadler FLIRT *
Talgo Talgo (officially Patentes Talgo, SAU) is a Spanish manufacturer of intercity, standard, and high-speed passenger trains. Corporate history TALGO, an abbreviation of Tren Articulado Ligero Goicoechea Oriol (English: ''Lightweight articulated tr ...
*
TGV The TGV (french: Train à Grande Vitesse, "high-speed train"; previously french: TurboTrain à Grande Vitesse, label=none) is France's intercity high-speed rail service, operated by SNCF. SNCF worked on a high-speed rail network from 1966 to 19 ...


References

{{DEFAULTSORT:Articulated Car Rolling stock Articulated vehicles