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A standard-gauge railway is a
railway Rail transport (also known as train transport) is a means of transport that transfers passengers and goods on wheeled vehicles running on rails, which are incorporated in tracks. In contrast to road transport, where the vehicles run on a p ...
with a
track gauge In rail transport, track gauge (in American English, alternatively track gage) is the distance between the two rails of a railway track. All vehicles on a rail network must have wheelsets that are compatible with the track gauge. Since many ...
of . The standard gauge is also called Stephenson gauge (after George Stephenson), International gauge, UIC gauge, uniform gauge, normal gauge and European gauge in Europe, and SGR in East Africa. It is the most widely used track gauge around the world, with approximately 55% of the lines in the world using it. All
high-speed rail High-speed rail (HSR) is a type of rail system that runs significantly faster than traditional rail, using an integrated system of specialised rolling stock and dedicated tracks. While there is no single standard that applies worldwide, lines ...
lines use standard gauge except those in Russia,
Finland Finland ( fi, Suomi ; sv, Finland ), officially the Republic of Finland (; ), is a Nordic country in Northern Europe. It shares land borders with Sweden to the northwest, Norway to the north, and Russia to the east, with the Gulf of Bot ...
, and
Uzbekistan Uzbekistan (, ; uz, Ozbekiston, italic=yes / , ; russian: Узбекистан), officially the Republic of Uzbekistan ( uz, Ozbekiston Respublikasi, italic=yes / ; russian: Республика Узбекистан), is a doubly landlocked co ...
. The distance between the inside edges of the rails is defined to be 1435 mm except in the
United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country Continental United States, primarily located in North America. It consists of 50 U.S. state, states, a Washington, D.C., ...
and on some heritage British lines, where it is defined in U.S. customary/ Imperial units as exactly "four feet eight and one half inches" which is equivalent to 1435.1mm.


History

As
railway Rail transport (also known as train transport) is a means of transport that transfers passengers and goods on wheeled vehicles running on rails, which are incorporated in tracks. In contrast to road transport, where the vehicles run on a p ...
s developed and expanded, one of the key issues was the
track gauge In rail transport, track gauge (in American English, alternatively track gage) is the distance between the two rails of a railway track. All vehicles on a rail network must have wheelsets that are compatible with the track gauge. Since many ...
(the distance, or
width Length is a measure of distance. In the International System of Quantities, length is a quantity with dimension distance. In most systems of measurement a base unit for length is chosen, from which all other units are derived. In the Interna ...
, between the inner sides of the rails) to be used. Different railways used different gauges, and where rails of different gauge met – a "gauge break" – loads had to be unloaded from one set of rail cars and re-loaded onto another, a time-consuming and expensive process. The result was the adoption throughout a large part of the world of a "standard gauge" of , allowing interconnectivity and interoperability.


Origins

A popular legend that has been around since at least 1937 traces the origin of the gauge even further back than the coalfields of northern England, pointing to the evidence of rutted roads marked by
chariot A chariot is a type of cart driven by a charioteer, usually using horses to provide rapid motive power. The oldest known chariots have been found in burials of the Sintashta culture in modern-day Chelyabinsk Oblast, Russia, dated to c. 2000&n ...
wheels dating from the
Roman Empire The Roman Empire ( la, Imperium Romanum ; grc-gre, Βασιλεία τῶν Ῥωμαίων, Basileía tôn Rhōmaíōn) was the post-Roman Republic, Republican period of ancient Rome. As a polity, it included large territorial holdings aro ...
. Snopes categorised this legend as "false", but commented that "it is perhaps more fairly labelled as 'True, but for trivial and unremarkable reasons. The historical tendency to place the wheels of horse-drawn vehicles approximately apart probably derives from the width needed to fit a carthorse in between the shafts. Research however has been undertaken which supports the hypothesis that "the origin of the standard gauge of the railway might result from an interval of wheel ruts of prehistoric ancient carriages". In addition, while road-travelling vehicles are typically measured from the outermost portions of the wheel rims (and there is some evidence that the first railways were measured in this way as well), it became apparent that for vehicles travelling on rails it was better to have main wheel flanges that fit ''inside'' the rails, and thus the minimum distance between the wheels (and, by extension, the inside faces of the rail heads) was the important one. There was never a standard gauge for horse railways but there were rough groupings: in the north of England none was less than . Wylam colliery's system, built before 1763, was , as was John Blenkinsop's Middleton Railway; the old plateway was relaid to so that Blenkinsop's engine could be used. Others were (in Beamish) or (in Bigges Main (in
Wallsend Wallsend is a town in North Tyneside, England, at the eastern end of Hadrian's Wall. It has a population of 43,842 and lies east of Newcastle upon Tyne. History Roman Wallsend In Roman times, this was the site of the fort of Segedunum. This ...
), Kenton, and Coxlodge). The English railway pioneer George Stephenson spent much of his early engineering career working for the coal mines of
County Durham County Durham ( ), officially simply Durham,UK General Acts 1997 c. 23Lieutenancies Act 1997 Schedule 1(3). From legislation.gov.uk, retrieved 6 April 2022. is a ceremonial county in North East England.North East Assembly �About North East E ...
. He favoured () for wagonways in
Northumberland Northumberland () is a county in Northern England, one of two counties in England which border with Scotland. Notable landmarks in the county include Alnwick Castle, Bamburgh Castle, Hadrian's Wall and Hexham Abbey. It is bordered by land ...
and Durham, and used it on his Killingworth line. The Hetton and Springwell wagonways also used this gauge. Stephenson's
Stockton and Darlington railway The Stockton and Darlington Railway (S&DR) was a railway company that operated in north-east England from 1825 to 1863. The world's first public railway to use steam locomotives, its first line connected collieries near Shildon with Darli ...
(S&DR) was built primarily to transport coal from mines near Shildon to the port at
Stockton-on-Tees Stockton-on-Tees, often simply referred to as Stockton, is a market town in the Borough of Stockton-on-Tees in County Durham, England. It is on the northern banks of the River Tees, part of the Teesside built-up area. The town had an estimat ...
. Opening in 1825, the initial gauge of was set to accommodate the existing gauge of hundreds of horse-drawn chaldron wagons that were already in use on the
wagonway Wagonways (also spelt Waggonways), also known as horse-drawn railways and horse-drawn railroad consisted of the horses, equipment and tracks used for hauling wagons, which preceded steam-powered railways. The terms plateway, tramway, dramw ...
s in the mines. The railway used this gauge for 15 years before a change was made, debuting around 1850, to the gauge. The historic
Mount Washington Cog Railway The Mount Washington Cog Railway, also known as the Cog, is the world's first mountain-climbing cog railway (rack-and-pinion railway). The railway climbs Mount Washington in New Hampshire, United States. It uses a Marsh rack system and both ste ...
, the world's first
mountain A mountain is an elevated portion of the Earth's crust, generally with steep sides that show significant exposed bedrock. Although definitions vary, a mountain may differ from a plateau in having a limited summit area, and is usually higher ...
-climbing
rack railway A rack railway (also rack-and-pinion railway, cog railway, or cogwheel railway) is a steep grade railway with a toothed rack rail, usually between the running rails. The trains are fitted with one or more cog wheels or pinions that mesh with t ...
, is still in operation in the 21st century, and has used the earlier gauge since its inauguration in 1868. George Stephenson used the gauge (including a belated extra of free movement to reduce binding on curves) for the Liverpool and Manchester Railway, authorised in 1826 and opened 30 September 1830. The success of this project led to Stephenson and his son
Robert The name Robert is an ancient Germanic given name, from Proto-Germanic "fame" and "bright" (''Hrōþiberhtaz''). Compare Old Dutch ''Robrecht'' and Old High German ''Hrodebert'' (a compound of ''Hrōþ, Hruod'' ( non, Hróðr) "fame, glory ...
being employed to engineer several other larger railway projects. Thus the gauge became widespread and dominant in Britain. Robert was reported to have said that if he had had a second chance to choose a standard gauge, he would have chosen one wider than . "I would take a few inches more, but a very few".. During the " gauge war" with the
Great Western Railway The Great Western Railway (GWR) was a British railway company that linked London with the southwest, west and West Midlands of England and most of Wales. It was founded in 1833, received its enabling Act of Parliament on 31 August 1835 and ran ...
, standard gauge was called "narrow gauge", in contrast to the Great Western's broad gauge. The modern use of the term "narrow gauge" for gauges less than standard did not arise for many years, until the first such locomotive-hauled passenger railway, the
Ffestiniog Railway The Ffestiniog Railway ( cy, Rheilffordd Ffestiniog) is a heritage railway based on narrow-gauge, located in Gwynedd, Wales. It is a major tourist attraction located mainly within the Snowdonia National Park. The railway is roughly long a ...
was built.


Adoption

In 1845, in the
United Kingdom of Great Britain and Ireland The United Kingdom of Great Britain and Ireland was a sovereign state in the British Isles that existed between 1801 and 1922, when it included all of Ireland. It was established by the Acts of Union 1800, which merged the Kingdom of Grea ...
, a Royal Commission on Railway Gauges reported in favour of a standard gauge. The subsequent Gauge Act ruled that new passenger-carrying railways in Great Britain should be built to a standard gauge of , and those in Ireland to a new standard gauge of . In Great Britain, Stephenson's gauge was chosen on the grounds that existing lines of this gauge were eight times longer than those of the rival (later ) gauge adopted principally by the Great Western Railway. It allowed the broad-gauge companies in Great Britain to continue with their tracks and expand their networks within the "Limits of Deviation" and the exceptions defined in the Act. After an intervening period of
mixed-gauge In railway engineering, "gauge" is the transverse distance between the inner surfaces of the heads of two rails, which for the vast majority of railway lines is the number of rails in place. However, it is sometimes necessary for track to c ...
operation (tracks were laid with three rails), the Great Western Railway finally completed the
conversion Conversion or convert may refer to: Arts, entertainment, and media * "Conversion" (''Doctor Who'' audio), an episode of the audio drama ''Cyberman'' * "Conversion" (''Stargate Atlantis''), an episode of the television series * "The Conversion" ...
of its network to standard gauge in 1892. In North East England, some early lines in colliery (
coal mining Coal mining is the process of extracting coal from the ground. Coal is valued for its energy content and since the 1880s has been widely used to generate electricity. Steel and cement industries use coal as a fuel for extraction of iron from ...
) areas were , while in
Scotland Scotland (, ) is a country that is part of the United Kingdom. Covering the northern third of the island of Great Britain, mainland Scotland has a border with England to the southeast and is otherwise surrounded by the Atlantic Ocean to ...
some early lines were . The British gauges converged starting from 1846 as the advantages of equipment interchange became increasingly apparent. By the 1890s, the entire network was
converted Conversion or convert may refer to: Arts, entertainment, and media * "Conversion" (''Doctor Who'' audio), an episode of the audio drama ''Cyberman'' * "Conversion" (''Stargate Atlantis''), an episode of the television series * "The Conversion" ...
to standard gauge. The Royal Commission made no comment about small lines narrower than standard gauge (to be called "narrow gauge"), such as the
Ffestiniog Railway The Ffestiniog Railway ( cy, Rheilffordd Ffestiniog) is a heritage railway based on narrow-gauge, located in Gwynedd, Wales. It is a major tourist attraction located mainly within the Snowdonia National Park. The railway is roughly long a ...
. Thus it permitted a future multiplicity of narrow gauges in the UK. It also made no comments about future gauges in British colonies, which allowed various gauges to be adopted across the colonies. Parts of the United States, mainly in the Northeast, adopted the same gauge, because some early trains were purchased from Britain. The American gauges converged, as the advantages of equipment interchange became increasingly apparent. Notably, all the broad gauge track in the South was converted to "almost standard" gauge over the course of two days beginning on 31 May 1886. ''See'' Track gauge in the United States. In continental Europe, France and Belgium adopted a gauge (measured between the midpoints of each rail's profile) for their early railways. The gauge between the interior edges of the rails (the measurement adopted from 1844) differed slightly between countries, and even between networks within a country (for example, to in France). The first tracks in Austria and in the Netherlands had other gauges ( in Austria for the Donau Moldau line and in the Netherlands for the Hollandsche IJzeren Spoorweg-Maatschappij), but for interoperability reasons (the first rail service between Paris and Berlin began in 1849, first Chaix timetable) Germany adopted standard gauges, as did most other European countries. The modern method of measuring rail gauge was agreed in the first Berne rail convention of 1886, according to the "Revue générale des chemins de fer, July 1928".


Early railways by gauge


Non-standard gauge

* Monkland and Kirkintilloch Railway, authorised 1824 and opened 1825, used . *
Dundee and Newtyle Railway The Dundee and Newtyle Railway opened in 1831 and was the first railway in the north of Scotland. It was built to carry goods between Dundee and the fertile area known as Strathmore; this involved crossing the Sidlaw Hills, and was accomplish ...
, authorised 1829 and opened 1831, used . * The
Eastern Counties Railway The Eastern Counties Railway (ECR) was an English railway company incorporated in 1836 intended to link London with Ipswich via Colchester, and then extend to Norwich and Yarmouth. Construction began in 1837 on the first nine miles at the ...
, authorised on 4 July 1836, used . * The London and Blackwall Railway, authorised on 28 July 1836, used .. * The
Dundee and Arbroath Railway The Dundee and Arbroath Railway was an early railway in Scotland. It opened in 1838, and used the unusual track gauge of 5 ft 6 in (1,676 mm). In 1848 it changed to standard gauge and connected to the emerging Scottish railway networ ...
, incorporated on 19 May 1836 and opened October 1838, used until standardised in 1847. * The
Arbroath and Forfar Railway The Arbroath and Forfar Railway was a railway that connected Forfar with the port town of Arbroath, in Scotland. It opened in 1838–1839 and it was successful in making an operating profit, but it was always desperately short of capital. It u ...
, incorporated on 19 May 1836 and opened November 1838, used . * The Northern and Eastern Railway, authorised on 4 July 1836, used gauge.. *
Aberdeen Railway The Aberdeen Railway was a Scottish railway company which built a line from Aberdeen to Forfar and Arbroath, partly by leasing and upgrading an existing railway. The line opened in stages between 1847 and 1850, with branches to Brechin and ...
, opened 1848, used until standardised.


Almost standard gauge

* The Huddersfield Corporation Tramways, used * The
Portsdown and Horndean Light Railway The Portsdown and Horndean Light Railway SU657058 > SU660061 > SU666064 >SU674086 > SU683094 > SU690108 > SU698126> SU702128 ) --> was a tram service that ran initially from Cosham to Horndean in Hampshire, England. History Authorised in 18 ...
, used * The
Portsmouth Corporation Transport Portsmouth Corporation Transport was a tram, trolleybus and bus operator formed in 1898, serving the city of Portsmouth, and owned by Portsmouth Corporation. Tram services ended in 1936, trolleybus services in 1963, while bus operations conti ...
, used * The Killingworth colliery railway, used .. * The Hetton colliery railway, opened 1822, used . * The
Stockton and Darlington Railway The Stockton and Darlington Railway (S&DR) was a railway company that operated in north-east England from 1825 to 1863. The world's first public railway to use steam locomotives, its first line connected collieries near Shildon with Darli ...
, authorised 1821, opened 1825, used . * The New Orleans and Carrollton Railroad used * The Pontchartrain Railroad used * The trams in Nuremberg nominally used during much of their existence, but have since been
converted Conversion or convert may refer to: Arts, entertainment, and media * "Conversion" (''Doctor Who'' audio), an episode of the audio drama ''Cyberman'' * "Conversion" (''Stargate Atlantis''), an episode of the television series * "The Conversion" ...
to standard gauge in name as well as fact.


Standard gauge

* The Baltimore and Ohio Railroad, begun 1827, opened 1830. * The Liverpool and Manchester Railway, authorised 1824, opened 1830. * The
Saint-Étienne–Lyon railway The Saint-Étienne to Lyon line is a railway linking Saint-Étienne to Lyon. The line was built between 1828 and 1833 by Camille Seguin and Marc Seguin at a cost of 14,500,000  FRF. History Construction Construction began in September 1 ...
, authorised 1826, opened 1833 (all the early French railways including Saint-Etienne Andrezieux, authorised 1823, opened 1827 had a French Gauge of from rail axis to rail axis, compatible with early standard gauge
tolerances Engineering tolerance is the permissible limit or limits of variation in: # a physical dimension; # a measured value or physical property of a material, manufactured object, system, or service; # other measured values (such as temperature, hum ...
) * The Dublin and Kingstown Railway, authorised 1831, opened for passenger traffic 1834. * The Newcastle & Carlisle Railway, authorised 1829, opened 1834, isolated from LMR. * The Grand Junction Railway, authorised 1833, opened 1837, connected to LMR. * The London and Birmingham Railway, authorised 1833, opened 1838, connected to LMR. * The Manchester and Birmingham Railway, authorised 1837, opened 1840, connected to LMR. * The
Birmingham and Gloucester Railway The Birmingham and Gloucester Railway (B&GR) was the first name of the railway linking the cities in its name and of the company which pioneered and developed it; the line opened in stages in 1840, using a terminus at Camp Hill in Birmingham. It ...
, authorised 1836, opened 1840, connected to LMR. * The
London and Southampton Railway The London and Southampton Railway was an early railway company between London and Southampton, in England. It opened in stages from 1838 to 1840 after a difficult construction period, but was commercially successful. On preparing to serve Por ...
, authorised 1834, opened 1840. * The London and Brighton Railway, authorised 1837, opened 1841. * The South Eastern Railway, authorised 1836, opened 1844.


Small deviations on standard gauge

* The Manchester and Leeds Railway, authorised on 4 July 1836, used .. ** The railways were intended to take gauge vehicles and allow a (second) running
tolerance Tolerance or toleration is the state of tolerating, or putting up with, conditionally. Economics, business, and politics * Toleration Party, a historic political party active in Connecticut * Tolerant Systems, the former name of Veritas Software ...
. * The Chester and Birkenhead Railway, authorised on 12 July 1837, used .. * The London and Brighton Railway, authorised on 15 July 1837, used .. * The Manchester and Birmingham Railway, authorised on 30 June 1837, used .. * The Pennsylvania Railroad originally used * The trams in Dresden, authorised in 1872 as
horsecar A horsecar, horse-drawn tram, horse-drawn streetcar (U.S.), or horse-drawn railway (historical), is an animal-powered (usually horse) tram or streetcar. Summary The horse-drawn tram (horsecar) was an early form of public rail transport, w ...
s, used gauge vehicles. Converted to 600 V DC electric trams in 1893, they now use ; both gauges are within the
tolerance Tolerance or toleration is the state of tolerating, or putting up with, conditionally. Economics, business, and politics * Toleration Party, a historic political party active in Connecticut * Tolerant Systems, the former name of Veritas Software ...
for standard gauge. * The Ohio gauge of


Dual gauge

*
Cheltenham and Great Western Union Railway The Cheltenham and Great Western Union Railway was a railway company intended to link Cheltenham, Gloucester and Swindon, in England. It was authorised in 1836 but it found it very hard to raise money for the construction, and it opened only a p ...
, authorised 1836, opened 1840, dual gauge 1843 and .


Initially standard gauge

Several lines were initially build as standard gauge but were later converted to another gauge for cost or for compatibility reasons. *
South Africa South Africa, officially the Republic of South Africa (RSA), is the southernmost country in Africa. It is bounded to the south by of coastline that stretch along the South Atlantic and Indian Oceans; to the north by the neighbouring coun ...
became *
Thailand Thailand ( ), historically known as Siam () and officially the Kingdom of Thailand, is a country in Southeast Asia, located at the centre of the Indochinese Peninsula, spanning , with a population of almost 70 million. The country is b ...
became *
Indonesia Indonesia, officially the Republic of Indonesia, is a country in Southeast Asia and Oceania between the Indian and Pacific oceans. It consists of over 17,000 islands, including Sumatra, Java, Sulawesi, and parts of Borneo and New Gui ...
became *
Ireland Ireland ( ; ga, Éire ; Ulster-Scots: ) is an island in the North Atlantic Ocean, in north-western Europe. It is separated from Great Britain to its east by the North Channel, the Irish Sea, and St George's Channel. Ireland is the s ...
became - Dublin and Kingstown Railway *
Australia Australia, officially the Commonwealth of Australia, is a sovereign country comprising the mainland of the Australian continent, the island of Tasmania, and numerous smaller islands. With an area of , Australia is the largest country by ...
became - Victoria &
South Australia South Australia (commonly abbreviated as SA) is a States and territories of Australia, state in the southern central part of Australia. It covers some of the most arid parts of the country. With a total land area of , it is the fourth-largest o ...
*
India India, officially the Republic of India (Hindi: ), is a country in South Asia. It is the List of countries and dependencies by area, seventh-largest country by area, the List of countries and dependencies by population, second-most populous ...
became - initial freight lines * some private Japanese railways


Modern almost standard gauge railways

* The Toronto Transit Commission uses a Toronto gauge of on its streetcar and heavy-rail
subway Subway, Subways, The Subway, or The Subways may refer to: Transportation * Subway, a term for underground rapid transit rail systems * Subway (underpass), a type of walkway that passes underneath an obstacle * Subway (George Bush Intercontin ...
lines, which was actually closer to gauge. ** The Toronto Transit Commission light-metro lines and light-rail lines (whether existing, under construction or proposed) use standard gauge. *
Trams in Leipzig The Leipzig tramway network (german: Straßenbahnnetz Leipzig) is a network of tramways which together with the S-Bahn Mitteldeutschland forms the backbone of the public transport system in Leipzig, a city in the federal state of Saxony, Germany. ...
, Germany use . * Trams in Dresden, Germany use . * gauge is in use on several
urban rail transit Urban rail transit is an all-encompassing term for various types of local rail systems providing passenger service within and around urban or suburban areas. The set of urban rail systems can be roughly subdivided into the following categories, ...
systems in Europe: ** Trams in Italy ** Madrid Metro (only metro system. Light rail system uses standard gauge.) * The
MTR The Mass Transit Railway (MTR) is a major public transport network serving :Hong Kong. Operated by the MTR Corporation Limited (MTRCL), it consists of heavy rail, light rail, and feeder bus service centred on a 10-line rapid transit network ...
in Hong Kong uses gauge on lines owned by the MTR Corporation. However, lines formerly operated (but which continue to be owned) by the Kowloon-Canton Railway Corporation, including the Light Rail network, use gauge. New lines and extensions to the MTR after 2014 use gauge, including the South Island line, Kwun Tong line extension and West Island line. * The Bucharest Metro uses gauge. * The Washington Metro uses , narrower than standard gauge. * The
Mount Washington Cog Railway The Mount Washington Cog Railway, also known as the Cog, is the world's first mountain-climbing cog railway (rack-and-pinion railway). The railway climbs Mount Washington in New Hampshire, United States. It uses a Marsh rack system and both ste ...
, the world's oldest mountain-climbing
rack-and-pinion railway A rack railway (also rack-and-pinion railway, cog railway, or cogwheel railway) is a steep grade railway with a toothed rack rail, usually between the running rails. The trains are fitted with one or more cog wheels or pinions that mesh with th ...
, uses a gauge.


Railways


Non-rail use

Several states in the United States had laws requiring road vehicles to have a consistent
gauge Gauge ( or ) may refer to: Measurement * Gauge (instrument), any of a variety of measuring instruments * Gauge (firearms) * Wire gauge, a measure of the size of a wire ** American wire gauge, a common measure of nonferrous wire diameter, es ...
to allow them to follow ruts in the road. Those gauges were similar to railway standard gauge.


See also

* Standard Gauge (toy trains) * * List of tram systems by gauge and electrification *
Track gauge In rail transport, track gauge (in American English, alternatively track gage) is the distance between the two rails of a railway track. All vehicles on a rail network must have wheelsets that are compatible with the track gauge. Since many ...
*
Regulating the Gauge of Railways Act 1846 The Railway Regulation (Gauge) Act 1846 (9 & 10 Vic. c.57) is an Act of the Parliament of the United Kingdom, that was designed to standardise railway tracks. It achieved royal assent on 18 August 1846, during the reign of Queen Victoria of ...


Notes


References


Bibliography

* * * * * * * * * *


External links

* , a discussion of gauge in Australia circa 1892 * , a discussion of the Roman gauge origin theory. {{DEFAULTSORT:Standard Gauge Track gauges by size Track gauges by name