0-4-0
Encyclopedia
Under the Whyte notation
Whyte notation
The Whyte notation for classifying steam locomotives by wheel arrangement was devised by Frederick Methvan Whyte and came into use in the early twentieth century encouraged by an editorial in American Engineer and Railroad Journal...

 for the classification of steam locomotive
Steam locomotive
A steam locomotive is a railway locomotive that produces its power through a steam engine. These locomotives are fueled by burning some combustible material, usually coal, wood or oil, to produce steam in a boiler, which drives the steam engine...

s, 0-4-0 represents one of the simplest possible types, that with two axles and four coupled wheels, all of which are driven. In normal circumstances, the wheels on each end of the axles are connected with coupling rod
Coupling rod
right|thumb|connecting rod and coupling rods attached to a small locomotive driving wheelA coupling rod or side rod connects the driving wheels of a locomotive. Steam locomotives in particular usually have them, but some diesel and electric locomotives, especially older ones and shunters, also have...

s to form a single driven set.

Other equivalent classifications are:
  • UIC classification
    UIC classification
    The UIC classification of locomotive axle arrangements describes the wheel arrangement of locomotives, multiple units and trams. It is set out in the International Union of Railways "Leaflet 650 - Standard designation of axle arrangement on locomotives and multiple-unit sets". It is used in much...

    : B (also known as German classification and Italian classification)
  • French classification: 020
  • Turkish classification
    Turkish classification
    In the Turkish classification system for railway locomotives, the number of powered axles are followed by the total number of axles. It is identical to the Swiss system except that the latter places a slash between the two numbers.Thus0-6-0 becomes 33...

    : 22
  • Swiss classification: 2/2


In the UIC classification
UIC classification
The UIC classification of locomotive axle arrangements describes the wheel arrangement of locomotives, multiple units and trams. It is set out in the International Union of Railways "Leaflet 650 - Standard designation of axle arrangement on locomotives and multiple-unit sets". It is used in much...

 used in Europe and in more recent years in simplified form in the United States, an 0-4-0 is classified as B (German/Italian) (if the axles are connected by side rods or gearing) and 020 (French) (independent of axle motoring). (UIC's Bo classification indicates the axles are independently motored, which would be 0-2-2-0 in Whyte notation.)

The terms four-wheeled and four-coupled are often used for 0-4-0 locomotives. These terms also encompass other wheel arrangements: Stephenson's Rocket
Stephenson's Rocket
Stephenson's Rocket was an early steam locomotive of 0-2-2 wheel arrangement, built in Newcastle Upon Tyne at the Forth Street Works of Robert Stephenson and Company in 1829.- Design innovations :...

 was an 0-2-2
0-2-2
An 0-2-2, in the Whyte notation for the classification of steam locomotives by wheel arrangement, is one that has two coupled driving wheels followed by two trailing wheels, with no leading wheels...

 four-wheeled locomotive, and Forney locomotive
Forney locomotive
The Forney is a type of tank locomotive patented by Matthias N. Forney between 1861 and 1864. Forney locomotives include the following characteristics:* An 0-4-4T wheel arrangement, that is four driving wheels followed by a truck with four wheels....

 4-4-0
4-4-0
Under the Whyte notation for the classification of steam locomotives, 4-4-0 represents the wheel arrangement of four leading wheels on two axles , four powered and coupled driving wheels on two axles, and no trailing wheels...

s are four-coupled.

Usage

A four-wheeled conguration where all the wheels are driving wheel
Driving wheel
On a steam locomotive, a driving wheel is a powered wheel which is driven by the locomotive's pistons...

s uses all the locomotive's weight for traction, but is inherently unstable at speed. The type was therefore mainly used for switcher
Switcher
A switcher or shunter is a small railroad locomotive intended not for moving trains over long distances but rather for assembling trains ready for a road locomotive to take over, disassembling a train that has been...

s (UK: shunters) 0-4-0 locomotives could either be tank locomotive
Tank locomotive
A tank locomotive or tank engine is a steam locomotive that carries its water in one or more on-board water tanks, instead of pulling it behind it in a tender. It will most likely also have some kind of bunker to hold the fuel. There are several different types of tank locomotive dependent upon...

s or tender locomotives, with the former more common in Europe
Europe
Europe is, by convention, one of the world's seven continents. Comprising the westernmost peninsula of Eurasia, Europe is generally 'divided' from Asia to its east by the watershed divides of the Ural and Caucasus Mountains, the Ural River, the Caspian and Black Seas, and the waterways connecting...

 and the latter in the United States
United States
The United States of America is a federal constitutional republic comprising fifty states and a federal district...

, except in the tightest of situations such as that of a shop switcher
Switcher
A switcher or shunter is a small railroad locomotive intended not for moving trains over long distances but rather for assembling trains ready for a road locomotive to take over, disassembling a train that has been...

, where overall length was a concern. The possible tractive effort
Tractive effort
As used in mechanical engineering, the term tractive force is the pulling or pushing force exerted by a vehicle on another vehicle or object. The term tractive effort is synonymous with tractive force, and is often used in railway engineering to describe the pulling or pushing capability of a...

 of an 0-4-0 within normal axle load limits was not enough to move large loads, and so they had largely been superseded for most purposes by 1900. Nevertheless they continued to be used in situations where tighter radius curves existed or the shorter length was an advantage. Thus they were commonly employed in dockyard work, industrial tramways, or as shop switchers.

The wheel arrangement is also used on specialised types such as fireless locomotive
Fireless locomotive
A fireless locomotive is a type of locomotive designed for use under conditions restricted by either the presence of flammable material or the need for cleanliness...

s, crane tank
Crane tank
A crane tank is a steam locomotive with a crane fitted to it. The crane may be fitted at the front, centre or rear of the locomotive and gives it a rather "top heavy" appearance...

s, tram engine
Tram engine
A tram engine is a locomotive specially built, or modified, to work on a street, or roadside, tramway.-Steam tram engines:In the steam locomotive era, tram engines had to comply with certain legal requirements, although these varied from country to country:* The engine must be governed to a maximum...

s, and geared steam locomotive
Geared steam locomotive
A geared steam locomotive is a type of steam locomotive which uses reduction gearing in the drivetrain, as opposed to the common directly driven design....

s. It was also widely used on narrow gauge
Narrow gauge
A narrow gauge railway is a railway that has a track gauge narrower than the of standard gauge railways. Most existing narrow gauge railways have gauges of between and .- Overview :...

 railways.

Tender Locomotives

Because of the lack of stability, tender engines of this type were only built for a few decades in the UK, although built for a longer period in the USA.

United Kingdom

Richard Trevithick
Richard Trevithick
Richard Trevithick was a British inventor and mining engineer from Cornwall. His most significant success was the high pressure steam engine and he also built the first full-scale working railway steam locomotive...

's Coalbrookedale (1802), Pen-y-Darren (1804) and Newcastle (1805) locomotives were of the 0-4-0 type, although in their cases the wheels were connected by a single gear wheel. The first 0-4-0 to use coupling rods was Locomotion No. 1 built by Robert Stephenson and Company
Robert Stephenson and Company
Robert Stephenson and Company was a locomotive manufacturing company founded in 1823. It was the first company set up specifically to build railway engines.- Foundation and early success :...

 for the Stockton and Darlington Railway
Stockton and Darlington Railway
The Stockton and Darlington Railway , which opened in 1825, was the world's first publicly subscribed passenger railway. It was 26 miles long, and was built in north-eastern England between Witton Park and Stockton-on-Tees via Darlington, and connected to several collieries near Shildon...

 in 1825. Stephenson also built the Lancashire Witch
Lancashire Witch
Lancashire Witch was an early steam locomotive built by Robert Stephenson and Company in Newcastle-upon-Tyne in 1828. It was a development of Locomotion.-Description:...

 1828, and Timothy Hackworth
Timothy Hackworth
Timothy Hackworth was a steam locomotive engineer who lived in Shildon, County Durham, England and was the first locomotive superintendent of the Stockton and Darlington Railway.- Youth and early work :...

 built Sans Pareil
Sans Pareil
Sans Pareil is a steam locomotive built by Timothy Hackworth which took part in the 1829 Rainhill Trials on the Liverpool and Manchester Railway, held to select a builder of locomotives...

 which ran at the Rainhill Trials
Rainhill Trials
The Rainhill Trials were an important competition in the early days of steam locomotive railways, run in October 1829 in Rainhill, Lancashire for the nearly completed Liverpool and Manchester Railway....

 in 1829. Both of these locomotives later worked on the Bolton and Leigh Railway
Bolton and Leigh Railway
The Bolton and Leigh Railway was the first public railway in the historic county of Lancashire, England. It opened in 1828 for goods.-History:...

.

The wheel arrangement was widely used by Edward Bury
Edward Bury
Edward Bury was an English locomotive manufacturer.Edward Bury was born in Salford, Lancashire, the son of a timber merchant, and was educated at Chester. By 1823 he was a partner in Gregson & Bury's steam sawmill at Toxteth Park, Liverpool, but in 1826 he set himself up as an iron-founder and...

 during the 1840s on the bar-framed locomotives
Bury Bar Frame locomotive
The Bury Bar Frame locomotive was an early type of steam locomotive, developed at the works of Edward Bury and Company, later named Bury, Curtis, and Kennedy....

 built for the London and Birmingham Railway
London and Birmingham Railway
The London and Birmingham Railway was an early railway company in the United Kingdom from 1833 to 1846, when it became part of the London and North Western Railway ....

. However, with the exception of a few isolated examples used by the smaller companies such as the Cambrian Railway, the Furness Railway and the Taff Vale Railway
Taff Vale Railway
The Taff Vale Railway is a railway in Glamorgan, South Wales, and is one of the oldest in Wales. It operated as an independent company from 1836 until 1922, when it became a constituent company of the Great Western Railway...

, and four examples by Edward Fletcher (engineer)
Edward Fletcher (engineer)
Edward Fletcher was a British engineer, and locomotive superintendent of the North Eastern Railway . He was born in Northumberland.-Career:...

 of the North Eastern Railway (UK)
North Eastern Railway (UK)
The North Eastern Railway , was an English railway company. It was incorporated in 1854, when four existing companies were combined, and was absorbed into the London and North Eastern Railway at the Grouping in 1923...

 between 1854 and 1868, the 0-4-0 tender locomotive had been largely superseded on Britain's main-line
Main line (railway)
The Mainline or Main line of a railway is a track that is used for through trains or is the principal artery of the system from which branch lines, yards, sidings and spurs are connected....

 railways by 1850.

United States

In the U.S.A., the Best Friend of Charleston
Best Friend of Charleston
The Best Friend of Charleston was a steam-powered railroad locomotive. It is widely acclaimed as the first locomotive to be built entirely within the United States. It also produced the first locomotive boiler explosion in the US.- History :...

was the first locomotive to be built entirely within the United States. It was built for the South Carolina Canal and Rail Road Company
South Carolina Canal and Rail Road Company
Chartered in 1827, the South Carolina Canal and Rail Road Company ran scheduled steam service over its line from Charleston, South Carolina, to Hamburg, South Carolina. beginning in 1833. At that time it was the longest railroad in the world...

 by the West Point Foundry
West Point Foundry
The West Point Foundry was an early ironworks in Cold Spring, New York that operated from 1817 to 1911. Set up to remedy deficiencies in national armaments production after the War of 1812, it became most famous for its production of Parrott rifles and other munitions during the Civil War, although...

 of New York
New York
New York is a state in the Northeastern region of the United States. It is the nation's third most populous state. New York is bordered by New Jersey and Pennsylvania to the south, and by Connecticut, Massachusetts and Vermont to the east...

 in 1830. The John Bull
John Bull (locomotive)
John Bull is a British-built railroad steam locomotive that operated in the United States. It was operated for the first time on September 15, 1831, and it became the oldest operable steam locomotive in the world when the Smithsonian Institution operated it in 1981...

was built by Robert Stephenson and Company
Robert Stephenson and Company
Robert Stephenson and Company was a locomotive manufacturing company founded in 1823. It was the first company set up specifically to build railway engines.- Foundation and early success :...

 for the Camden and Amboy Railroad in New Jersey
New Jersey
New Jersey is a state in the Northeastern and Middle Atlantic regions of the United States. , its population was 8,791,894. It is bordered on the north and east by the state of New York, on the southeast and south by the Atlantic Ocean, on the west by Pennsylvania and on the southwest by Delaware...

 in 1831, but was later rebuilt as a 2-4-0
2-4-0
Under the Whyte notation for the classification of steam locomotives, 2-4-0 represents the wheel arrangement of two leading wheels on one axle, four powered and coupled driving wheels on two axles, and no trailing wheels....

. Another early example of the 0-4-0 type was the Baltimore and Ohio Railroad
Baltimore and Ohio Railroad
The Baltimore and Ohio Railroad was one of the oldest railroads in the United States and the first common carrier railroad. It came into being mostly because the city of Baltimore wanted to compete with the newly constructed Erie Canal and another canal being proposed by Pennsylvania, which...

's Atlantic
Atlantic (locomotive)
Atlantic was the name of an early American steam locomotive built by Phineas Davis for the Baltimore and Ohio Railroad in 1832.-Design and construction:...

#2 built in 1832 by Phineas Davis
Phineas Davis
Phineas Davis was a well-known clockmaker and inventor who designed and built the first practical American coal-burning railroad locomotive....

 and Israel Gartner.

The Pennsylvania Railroad
Pennsylvania Railroad
The Pennsylvania Railroad was an American Class I railroad, founded in 1846. Commonly referred to as the "Pennsy", the PRR was headquartered in Philadelphia, Pennsylvania....

 kept producing 0-4-0 classes long after all other major railroads had abandoned development of the type, building their final A5s
PRR A5s
The Pennsylvania Railroads class A5s was the largest class of 0-4-0 steam locomotives.-History:In the 1920s many railroads in the United States of America had retired 0-4-0 steam locomotives, because they were too small to move freight cars in yards and were too small for switching duties. This was...

class into the 1920s
1920s
File:1920s decade montage.png|From left, clockwise: Third Tipperary Brigade Flying Column No. 2 under Sean Hogan during the Irish Civil War; Prohibition agents destroying barrels of alcohol in accordance to the 18th amendment, which made alcoholic beverages illegal throughout the entire decade; In...

. The A5s was a monster among 0-4-0s, larger than many 0-6-0
0-6-0
Under the Whyte notation for the classification of steam locomotives, 0-6-0 represents the wheel arrangement of no leading wheels, six powered and coupled driving wheels on three axles, and no trailing wheels...

 designs, with modern features found on few others of its type: superheating
Superheater
A superheater is a device used to convert saturated steam or wet steam into dry steam used for power generation or processes. There are three types of superheaters namely: radiant, convection, and separately fired...

, power reverse, piston valve
Piston valve
A piston valve is a device used to control the motion of a fluid along a tube or pipe by means of the linear motion of a piston within a chamber or cylinder.Examples of piston valves are:...

s, and many others. The Pennsy continued building the type because it had a large number of confined and tight industrial branches, more than most other railroads.

Tank Locomotives

0-4-0 tank engines were introduced in the early 1850s. The type was found to be so useful in many locations that they continued to be built for more than a century and existed until the end of steam.

United Kingdom

The tank engine version of the wheel arrangement begins to appear in the early 1850s, with the first significant class being six saddle tanks designed by Robert Sinclair (locomotive engineer)
Robert Sinclair (locomotive engineer)
Robert Sinclair was Chief Mechanical Engineer of the Caledonian Railway from 1847–1856, the Eastern Counties Railway from 1856–1865 and of the Great Eastern Railway from 1862–1866.-External links:*...

 for the Caledonian Railway
Caledonian Railway
The Caledonian Railway was a major Scottish railway company. It was formed in the early 19th century and it was absorbed almost a century later into the London, Midland and Scottish Railway, in the 1923 railway grouping, by means of the Railways Act 1921...

. By 1860 the type was very popular and continued to be built in significant numbers for both mainline
Main line (railway)
The Mainline or Main line of a railway is a track that is used for through trains or is the principal artery of the system from which branch lines, yards, sidings and spurs are connected....

 and industrial railway
Industrial railway
An industrial railway is a type of railway that is not available for public transportation and is used exclusively to serve a particular industrial, logistics or military site...

s almost to the end of steam traction. Hudswell Clarke
Hudswell Clarke
Hudswell, Clarke and Company Limited was an engineering and locomotive building company in Jack Lane, Hunslet, Leeds, West Yorkshire, England.-History:...

 were supplying industrial saddle tanks until at least 1947, and both Barclay
Barclay
-People:* Barclay , people with the surname Barclay* Clan BarclayFictional* Andy Barclay, the protagonist in the first three films of the Child's Play series* Reginald Barclay, character in Star Trek: The Next Generation-Business:...

 and Robert Stephenson and Hawthorns
Robert Stephenson and Hawthorns
Robert Stephenson and Hawthorns Ltd was a locomotive builder with works in North East England.-History:The company was formed in September 1937 when Robert Stephenson and Company, which was based in Darlington took over the locomotive building department of Hawthorn Leslie and Company, based in...

 in 1949. The last British Railways dock shunters
LMS Kitson 0-4-0ST
The London Midland and Scottish Railway Kitson 0-4-0ST was a class of 0-4-0 saddle tank steam locomotive designed for light shunting.5 were originally designed and built by Kitson & Co. of Leeds to LMS specification in 1932 and numbered 1500–4. They were similar to other shunters built for...

 were built by Horwich Works
Horwich Works
Horwich Works was a railway works built in 1886 by the Lancashire and Yorkshire Railway in Horwich, near Bolton, in the North West of England when the company moved from its original works at Miles Platting, Manchester.-Buildings:...

 as late as 1955 and survived until 1966.

Standard gauge

The first locomotive to run in railway service in South Africa was a small standard gauge 0-4-0WT well tank engine named "Natal"
South African "Natal" 0-4-0WT
The first locomotive to run in South Africa, the Natal Railway Company’s “Natal”, was landed at Durban on 13 May 1860 and made its inaugural run during the official opening of the first operating railway in South Africa on Tuesday, 26 June 1860...

, manufactured by Carrett, Marshall and Company of Leeds. It made its inaugural run in Durban during the official opening of the first operating railway in South Africa on Tuesday, 26 June 1860.

Cape gauge

During the late nineteenth and early twentieth century a number of 0-4-0ST saddle tank locomotives were imported into South Africa from the UK for use in harbours. These locomotives, which included designs by Black, Hawthorn and Company
Black, Hawthorn & Co
Black, Hawthorn and Company was a steam locomotive manufacturer with a works situated in Gateshead, Tyne and Wear, UK.-John Coulthard and Son:...

 in 1889 and 1894, Neilson and Company
Neilson and Company
Neilson and Company was a locomotive manufacturer in Glasgow, Scotland.The company was started in 1836 at McAlpine Street by Walter Neilson and James Mitchell to manufacture marine and stationary engines...

 in 1892, the Hunslet Engine Company
Hunslet Engine Company
The Hunslet Engine Company is a British locomotive-building company founded in 1864 at Jack Lane, Hunslet, Leeds, West Yorkshire, England by John Towlerton Leather, a civil engineering contractor, who appointed James Campbell as his Works Manager.In 1871, James Campbell bought the company for...

 in 1904, and Hudswell Clarke
Hudswell Clarke
Hudswell, Clarke and Company Limited was an engineering and locomotive building company in Jack Lane, Hunslet, Leeds, West Yorkshire, England.-History:...

 in 1910, eventually became part of South African Railways (SAR) stock.

Narrow gauge

In 1900 the British War Office placed two Sirdar class 0-4-0T tank steam locomotives in service on a 600 millimetres (23.62 in) narrow gauge line near Germiston in the Zuid-Afrikaansche Republiek, where the Royal Engineers had established a siege park during the Second Freedom War. The locomotives were built by Kerr, Stuart and Company.

At the end of the war the two locomotives were sold to a farmer, who used them on a firewood line between Pienaarsrivier and Pankop until the line and locomotives were taken over by the Central South African Railways
Central South African Railways
From 1902 to 1904, the area of power of Lieutenant-Colonel Sir Percy Girouard later also included the lines of The Netherlands-South African Railway Company; together this dominion covered all lines in the Transvaal that belonged to NZASM ....

. In 1912, when these locomotives were assimilated into the SAR, they were renumbered with an "NG" prefix to their numbers. When a system of grouping narrow gauge locomotives into classes was eventually introduced by the SAR somewhere between 1928 and 1930, they were classified as .

United States

The 0-4-0 tank was principally used in the USA for Industrial railway
Industrial railway
An industrial railway is a type of railway that is not available for public transportation and is used exclusively to serve a particular industrial, logistics or military site...

 purposes.

Indonesia

Semarang
Semarang
- Economy :The western part of the city is home to many industrial parks and factories. The port of Semarang is located on the north coast and it is the main shipping port for the province of Central Java. Many small manufacturers are located in Semarang, producing goods such as textiles,...

-Cheribon Stoomtram Maatschappij (SCS) imported 27 standard gauge
Standard gauge
The standard gauge is a widely-used track gauge . Approximately 60% of the world's existing railway lines are built to this gauge...

 0-4-0 locomotives of the B52 class 1908-1911, originally to operate services from Kalibrodi-Semarang
Semarang
- Economy :The western part of the city is home to many industrial parks and factories. The port of Semarang is located on the north coast and it is the main shipping port for the province of Central Java. Many small manufacturers are located in Semarang, producing goods such as textiles,...

 to Tanggung and Yogyakarta. They were built by Sächsische Maschinenfabrik
Sächsische Maschinenfabrik
The Sächsische Maschinenfabrik in Chemnitz was one of the most important engineering companies in Saxony in the second half of the 19th century and the first two decades of the 20th century. Including its various predecessor businesses, the firm existed from 1837 until its liquidation in 1930, and...

 in Chemnitz
Chemnitz
Chemnitz is the third-largest city of the Free State of Saxony, Germany. Chemnitz is an independent city which is not part of any county and seat of the government region Direktionsbezirk Chemnitz. Located in the northern foothills of the Ore Mountains, it is a part of the Saxon triangle...

, Germany
Germany
Germany , officially the Federal Republic of Germany , is a federal parliamentary republic in Europe. The country consists of 16 states while the capital and largest city is Berlin. Germany covers an area of 357,021 km2 and has a largely temperate seasonal climate...

. They were a modern locomotive design for the time, equipped with a superheater
Superheater
A superheater is a device used to convert saturated steam or wet steam into dry steam used for power generation or processes. There are three types of superheaters namely: radiant, convection, and separately fired...

. The largest allocation of B52 class locomotives was in Tegal, Central Java for services to Purwokerto
Purwokerto
Purwokerto is a city on the island of Java in Indonesia. It is the capital of Banyumas Regency, Central Java region. The estimated population of the city in 2005 was 249,705.-Geography:...

. Some were later converted to tram engines and worked in Tegal and Purwokerto
Purwokerto
Purwokerto is a city on the island of Java in Indonesia. It is the capital of Banyumas Regency, Central Java region. The estimated population of the city in 2005 was 249,705.-Geography:...

. All 27 locomotives were in existence at the end of 1960 but by 1970 only 15 units remained. Two locomotives have been preserved, B5212 at the Taman Mini Indonesia Indah
Taman Mini Indonesia Indah
Taman Mini Indonesia Indah or "Beautiful Indonesia Miniature Park" is a culture-based recreational area located in East Jakarta, Indonesia. It has an area of about...

 Museum of Transport and B5210 at the Railway Museum Ambarawa
Ambarawa
Ambarawa is a market town located between Semarang and Salatiga in Central Java, Indonesia.Ambarawa was an important connecting rail link providing a cog railway connecting through Central Java as far as Yogyakarta via Magelang. The Semarang-Ambarawa-Magelang line was fully operational until 1977...

.

0-4-0 Diesel locomotives

The wheel arrangement was also used on a number of small diesel-mechanical shunters
Switcher
A switcher or shunter is a small railroad locomotive intended not for moving trains over long distances but rather for assembling trains ready for a road locomotive to take over, disassembling a train that has been...

 produced by John Fowler & Co.
John Fowler & Co.
thumb|right|John Fowler & Co. [[steam roller]] of 1923John Fowler & Co Engineers of Leathley Road, Hunslet, Leeds, West Yorkshire, England produced traction engines and ploughing implements and equipment, as well as railway equipment. Fowler also produced the Track Marshall tractor which was a...

 in the 1930s. Similarly, it was perpetuated on a number of diesel-mechanical and diesel-hydraulic classes between 1953 and 1960 (see List of British Rail modern traction locomotive classes. Many of these were later sold for industrial use.

There are 0-4-0 diesel locomotive
Diesel locomotive
A diesel locomotive is a type of railroad locomotive in which the prime mover is a diesel engine, a reciprocating engine operating on the Diesel cycle as invented by Dr. Rudolf Diesel...

s too, although small in number. The smallest diesel switcher
Switcher
A switcher or shunter is a small railroad locomotive intended not for moving trains over long distances but rather for assembling trains ready for a road locomotive to take over, disassembling a train that has been...

s, such as the EMD Model 40
EMD Model 40
The EMD Model 40 was a two-axle diesel-electric locomotive built by Electro-Motive Corporation, and its corporate successor, General Motors' Electro-Motive Division between August 1940 and April 1943. Nicknamed "critters", eleven examples of this locomotive were built. Powered by twin General...

, were of this arrangement.
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