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class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>History</span> </div> </a> <button aria-controls="toc-History-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> <span class="vector-icon mw-ui-icon-wikimedia-expand"></span> <span>Toggle History subsection</span> </button> <ul id="toc-History-sublist" class="vector-toc-list"> <li id="toc-Later_UK_developments" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Later_UK_developments"> <div class="vector-toc-text"> <span class="vector-toc-numb">2.1</span> <span>Later UK developments</span> </div> </a> <ul id="toc-Later_UK_developments-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Belgium" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Belgium"> <div class="vector-toc-text"> <span class="vector-toc-numb">2.2</span> <span>Belgium</span> </div> </a> <ul id="toc-Belgium-sublist" 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class="vector-toc-text"> <span class="vector-toc-numb">2.6</span> <span>Latvia</span> </div> </a> <ul id="toc-Latvia-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Preserved_examples_and_replicas" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Preserved_examples_and_replicas"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>Preserved examples and replicas</span> </div> </a> <ul id="toc-Preserved_examples_and_replicas-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-See_also" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#See_also"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>See also</span> </div> </a> <ul id="toc-See_also-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-References" class="vector-toc-list-item vector-toc-level-1 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<div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="en" dir="ltr"><div class="shortdescription nomobile noexcerpt noprint searchaux" style="display:none">Locomotive wheel arrangement</div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Adler_May_2008_Fuerth_3.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/b/b0/Adler_May_2008_Fuerth_3.jpg/220px-Adler_May_2008_Fuerth_3.jpg" decoding="async" width="220" height="123" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/b/b0/Adler_May_2008_Fuerth_3.jpg/330px-Adler_May_2008_Fuerth_3.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/b/b0/Adler_May_2008_Fuerth_3.jpg/440px-Adler_May_2008_Fuerth_3.jpg 2x" data-file-width="2683" data-file-height="1497" /></a><figcaption>Replica of <i>Adler</i> at Fürth, May 2008</figcaption></figure> <p>Under the <a href="/wiki/Whyte_notation" title="Whyte notation">Whyte notation</a> for the classification of <a href="/wiki/Steam_locomotive" title="Steam locomotive">steam locomotives</a>, <b>2-2-2</b> represents the <a href="/wiki/Wheel_arrangement" title="Wheel arrangement">wheel arrangement</a> of two <a href="/wiki/Leading_wheel" title="Leading wheel">leading wheels</a> on one axle, two powered <a href="/wiki/Driving_wheel" title="Driving wheel">driving wheels</a> on one axle, and two <a href="/wiki/Trailing_wheel" title="Trailing wheel">trailing wheels</a> on one axle. The wheel arrangement both provided more stability and enabled a larger <a href="/wiki/Firebox_(steam_engine)" title="Firebox (steam engine)">firebox</a> than the earlier <a href="/wiki/0-2-2" title="0-2-2">0-2-2</a> and <a href="/wiki/2-2-0" title="2-2-0">2-2-0</a> types. This wheel arrangement is sometimes described as a <b><a href="/wiki/Single_(locomotive)" title="Single (locomotive)">Single</a></b>, although this name could be used to describe any kind of locomotive with a single pair of driving wheels. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Equivalent_classifications">Equivalent classifications</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=2-2-2&action=edit&section=1" title="Edit section: Equivalent classifications"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Other equivalent classifications are: </p> <ul><li><a href="/wiki/UIC_classification" class="mw-redirect" title="UIC classification">UIC classification</a>: <b>1A1</b> (also known as German classification and <a href="/wiki/Italian_classification" class="mw-redirect" title="Italian classification">Italian classification</a>)</li> <li><a href="/wiki/French_classification" class="mw-redirect" title="French classification">French classification</a>: <b>111</b></li> <li><a href="/wiki/Turkish_classification" class="mw-redirect" title="Turkish classification">Turkish classification</a>: <b>13</b></li> <li><a href="/wiki/Swiss_classification" class="mw-redirect" title="Swiss classification">Swiss classification</a>: <b>1/3</b></li></ul> <div class="mw-heading mw-heading2"><h2 id="History">History</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=2-2-2&action=edit&section=2" title="Edit section: History"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The 2-2-2 configuration appears to have been developed by <a href="/wiki/Robert_Stephenson_%26_Company" class="mw-redirect" title="Robert Stephenson & Company">Robert Stephenson & Company</a> in 1834, as an enlargement of their <a href="/wiki/2-2-0" title="2-2-0">2-2-0</a> <i>Planet</i> configuration, offering more stability and a larger <a href="/wiki/Firebox_(steam_engine)" title="Firebox (steam engine)">firebox</a>. The new type became known as Stephenson's <a href="/wiki/Patentee_locomotive" class="mw-redirect" title="Patentee locomotive">Patentee locomotive</a>.<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> <a href="/wiki/Adler_(locomotive)" title="Adler (locomotive)">Adler</a>, the first successful locomotive to operate in Germany, was a <i>Patentee</i> supplied by Robert Stephenson & Company in component form in December, 1835 was one of the earliest examples. Other examples were exported to the <a href="/wiki/Netherlands" title="Netherlands">Netherlands</a>, <a href="/wiki/Russia" title="Russia">Russia</a> and <a href="/wiki/Italy" title="Italy">Italy</a>.<sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> By 1838 the 2-2-2 had become the standard passenger design by Robert Stephenson & Company.<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> </p><p>Eighteen of the first nineteen locomotives ordered by <a href="/wiki/Isambard_Kingdom_Brunel" title="Isambard Kingdom Brunel">Isambard Kingdom Brunel</a> for the opening of the <a href="/wiki/Great_Western_Railway" title="Great Western Railway">Great Western Railway</a> in 1837/8 were of the 2-2-2 type.<sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> These included six <a href="/wiki/GWR_Charles_Tayleur_locomotives" title="GWR Charles Tayleur locomotives">2-2-2 locomotives</a> built by Charles Tayleur at his <a href="/wiki/Vulcan_Foundry" title="Vulcan Foundry">Vulcan Foundry</a>. Also in 1837 the successful <i><a href="/wiki/GWR_Star_Class" title="GWR Star Class">North Star</a></i> broad gauge locomotive was delivered to the Great Western Railway by Stephenson, becoming the first of a class of twelve locomotives by 1841. </p> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:North_Star_photograph.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/a/a0/North_Star_photograph.jpg/220px-North_Star_photograph.jpg" decoding="async" width="220" height="220" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/a/a0/North_Star_photograph.jpg/330px-North_Star_photograph.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/a/a0/North_Star_photograph.jpg/440px-North_Star_photograph.jpg 2x" data-file-width="768" data-file-height="768" /></a><figcaption><a href="/wiki/Great_Western_Railway" title="Great Western Railway">Great Western Railway</a> <a href="/wiki/GWR_Star_Class" title="GWR Star Class">North Star</a> at Swindon</figcaption></figure> <div class="mw-heading mw-heading3"><h3 id="Later_UK_developments">Later UK developments</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=2-2-2&action=edit&section=3" title="Edit section: Later UK developments"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p><a href="/wiki/Sharp,_Stewart_and_Company#Early_days" title="Sharp, Stewart and Company">Sharp, Roberts & Company</a> constructed more than 600 2-2-2 locomotives between 1837 and 1857. Ten of these supplied to the <a href="/wiki/Grand_Junction_Railway" title="Grand Junction Railway">Grand Junction Railway</a> became the basis of <a href="/wiki/Alexander_Allan_(locomotive_engineer)" title="Alexander Allan (locomotive engineer)">Alexander Allan's</a> successful designs for the railway from 1845 (the first of which, formerly named <i>Columbine</i>, is preserved). <a href="/wiki/John_Rennie_the_Younger" title="John Rennie the Younger">John Rennie</a> supplied 2-2-2 locomotives to the <a href="/wiki/London_and_Croydon_Railway" title="London and Croydon Railway">London and Croydon Railway</a> from 1838 and the <a href="/wiki/London_and_Brighton_Railway" title="London and Brighton Railway">London and Brighton Railway</a> in 1840.<sup id="cite_ref-5" class="reference"><a href="#cite_note-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> <a href="/wiki/Arend_(locomotive)" class="mw-redirect" title="Arend (locomotive)">Arend</a> ("eagle") was one of the two first steam locomotives in the Netherlands, built by <a href="/wiki/R._B._Longridge_and_Company" title="R. B. Longridge and Company">R. B. Longridge and Company</a> of <a href="/wiki/Bedlington" title="Bedlington">Bedlington</a>, Northumberland in 1839. </p><p>The Great Western Railway continued to order both <a href="/wiki/Broad-gauge_railway" title="Broad-gauge railway">broad gauge</a> and <a href="/wiki/Standard-gauge_railway" title="Standard-gauge railway">standard gauge</a> locomotives on the railway, including the <a href="/wiki/GWR_Firefly_Class" title="GWR Firefly Class">Firefly</a> and <a href="/wiki/GWR_Sun_Class" title="GWR Sun Class">Sun classes</a> (1840–42), which were enlarged versions of <a href="/wiki/GWR_Star_Class" title="GWR Star Class">North Star</a>. <a href="/wiki/Bury,_Curtis_and_Kennedy" title="Bury, Curtis and Kennedy">Bury, Curtis and Kennedy</a> supplied six 2-2-2 locomotives to the <a href="/wiki/Bristol_and_Gloucester_Railway" title="Bristol and Gloucester Railway">Bristol and Gloucester Railway</a> in 1844, and fourteen to the <a href="/wiki/Great_Southern_and_Western_Railway" title="Great Southern and Western Railway">Great Southern and Western Railway</a> in Ireland in 1848, (the last of these has been preserved at <a href="/wiki/Cork_Kent_railway_station" title="Cork Kent railway station">Cork Kent railway station</a>. </p> <figure class="mw-default-size mw-halign-left" typeof="mw:File/Thumb"><a href="/wiki/File:Jenny_Lind_locomotive.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/c/c5/Jenny_Lind_locomotive.jpg/220px-Jenny_Lind_locomotive.jpg" decoding="async" width="220" height="137" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/c/c5/Jenny_Lind_locomotive.jpg/330px-Jenny_Lind_locomotive.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/c/c5/Jenny_Lind_locomotive.jpg/440px-Jenny_Lind_locomotive.jpg 2x" data-file-width="2100" data-file-height="1312" /></a><figcaption>The original "Jenny Lind" locomotive, 1847.</figcaption></figure> <p>The <a href="/wiki/Jenny_Lind_locomotive" title="Jenny Lind locomotive">Jenny Lind locomotive</a>, designed by <a href="/wiki/David_Joy_(engineer)" class="mw-redirect" title="David Joy (engineer)">David Joy</a> and built in 1847 for the <a href="/wiki/London,_Brighton_and_South_Coast_Railway" title="London, Brighton and South Coast Railway">London, Brighton and South Coast Railway</a> by the <a href="/wiki/E._B._Wilson_and_Company" title="E. B. Wilson and Company">E. B. Wilson and Company</a> of <a href="/wiki/Leeds" title="Leeds">Leeds</a>, became the basis of hundreds of similar passenger locomotives built during the 1840s and 1850s by this and other manufacturers for UK railways. The <a href="/wiki/London_and_North_Western_Railway" title="London and North Western Railway">London and North Western Railway</a> <a href="/wiki/LNWR_2-2-2_3020_Cornwall" title="LNWR 2-2-2 3020 Cornwall"><i>Cornwall</i></a> locomotive was designed at <a href="/wiki/Crewe_Works" title="Crewe Works">Crewe Works</a> as a <a href="/wiki/4-2-2" title="4-2-2">4-2-2</a> by <a href="/wiki/Francis_Trevithick" title="Francis Trevithick">Francis Trevithick</a> in 1847, but was rebuilt as a 2-2-2 in 1858. </p><p>Although by the 1860s the 2-2-2 configuration was beginning to be superseded by the <a href="/wiki/2-4-0" title="2-4-0">2-4-0</a> type with better adhesion, the invention of <a href="/wiki/Sandbox_(locomotive)" title="Sandbox (locomotive)">steam sanding</a> gave 2-2-2 singles a new lease of life, and they continued to be built until the 1890s. Notable late examples include <a href="/wiki/William_Stroudley" title="William Stroudley">William Stroudley</a>'s <a href="/wiki/LB%26SCR_G_class" title="LB&SCR G class">singles</a> of 1874–1880, <a href="/wiki/William_Dean_(engineer)" title="William Dean (engineer)">William Dean's</a> <a href="/wiki/GWR_157_Class_(Dean)" title="GWR 157 Class (Dean)">157 class</a> of 1878–79,<sup id="cite_ref-6" class="reference"><a href="#cite_note-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> and his <a href="/wiki/GWR_3001_Class" title="GWR 3001 Class">3001 class</a> (1891–92),<sup id="cite_ref-7" class="reference"><a href="#cite_note-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-8" class="reference"><a href="#cite_note-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup> both for the Great Western Railway. <a href="/wiki/James_Holden_(engineer)" class="mw-redirect" title="James Holden (engineer)">James Holden</a> of the <a href="/wiki/Great_Eastern_Railway" title="Great Eastern Railway">Great Eastern Railway</a> created some <a href="/wiki/GER_Class_D27" title="GER Class D27">2-2-2 singles</a> in 1889 by removing the <a href="/wiki/Coupling_rod" title="Coupling rod">coupling rod</a> from a <a href="/wiki/2-4-0" title="2-4-0">2-4-0</a>. </p> <div class="mw-heading mw-heading3"><h3 id="Belgium">Belgium</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=2-2-2&action=edit&section=4" title="Edit section: Belgium"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Stoomloc_Le_Belge.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/6/6d/Stoomloc_Le_Belge.jpg/220px-Stoomloc_Le_Belge.jpg" decoding="async" width="220" height="153" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/6/6d/Stoomloc_Le_Belge.jpg/330px-Stoomloc_Le_Belge.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/6/6d/Stoomloc_Le_Belge.jpg/440px-Stoomloc_Le_Belge.jpg 2x" data-file-width="4251" data-file-height="2952" /></a><figcaption>Replica of <a href="/wiki/Le_Belge_(locomotive)" title="Le Belge (locomotive)">'Le Belge' 1835</a></figcaption></figure> <p>The first steam railway locomotive built in Belgium in 1835, and was built by <a href="/wiki/John_Cockerill_(industrialist)" title="John Cockerill (industrialist)">John Cockerill</a> under license to a design by <a href="/wiki/Robert_Stephenson_%26_Company" class="mw-redirect" title="Robert Stephenson & Company">Robert Stephenson & Company</a> It was built for use on the first main line on the European mainland, the <a href="/wiki/Belgian_railway_line_25" title="Belgian railway line 25">Brussels-Mechelen line</a>.<sup id="cite_ref-r2_9-0" class="reference"><a href="#cite_note-r2-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup> A replica was built at the workshops of <a href="/w/index.php?title=Boissellerie_Cognaut&action=edit&redlink=1" class="new" title="Boissellerie Cognaut (page does not exist)">Boissellerie Cognaut</a> for the 150th anniversary of the formation of <a href="/wiki/Belgium" title="Belgium">Belgium</a>.<sup id="cite_ref-10" class="reference"><a href="#cite_note-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup> <a href="/wiki/Belgian_railway_line_25" title="Belgian railway line 25">Brussels-Mechelen line</a> </p> <div class="mw-heading mw-heading3"><h3 id="Italy">Italy</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=2-2-2&action=edit&section=5" title="Edit section: Italy"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Two 2-2-2 locomotives were imported from Longridge and Co of <a href="/wiki/Bedlington_Ironworks" title="Bedlington Ironworks">Bedlington Ironworks</a> England for the <a href="/wiki/Naples%E2%80%93Portici_railway" title="Naples–Portici railway">Naples–Portici railway</a> in 1839 named Bayard and Vesuvio. A replica of 'Bayard is at the Naples Railway Museum.<sup id="cite_ref-11" class="reference"><a href="#cite_note-11"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading3"><h3 id="Germany">Germany</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=2-2-2&action=edit&section=6" title="Edit section: Germany"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Most of the earliest locomotives to operate in what is now Germany before the mid-1840s were 2-2-2s delivered by UK manufacturers. However, by 1839 the type was also being built locally <i>see</i> <a href="/wiki/List_of_Bavarian_locomotives_and_railbuses" title="List of Bavarian locomotives and railbuses">List of Bavarian locomotives and railbuses</a>. The <a href="/wiki/LDE_%E2%80%93_Pegasus" title="LDE – Pegasus">Pegasus</a> of 1839 was the first locomotive to be built by the <a href="/wiki/S%C3%A4chsische_Maschinenbau-Compagnie" class="mw-redirect" title="Sächsische Maschinenbau-Compagnie">Sächsische Maschinenbau-Compagnie</a> in <a href="/wiki/Chemnitz" title="Chemnitz">Chemnitz</a>. <a href="/wiki/August_Borsig" title="August Borsig">August Borsig</a> and Company manufactured <a href="/wiki/Beuth_(locomotive)" title="Beuth (locomotive)">Beuth</a> in 1843 which was highly successful; its valve design became de facto standard for locomotives for decades to come.<sup id="cite_ref-12" class="reference"><a href="#cite_note-12"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup> By 1846 he had manufactured more than a hundred similar locomotives. Both the <a href="/wiki/Leipzig-Dresden_Railway_Company" class="mw-redirect" title="Leipzig-Dresden Railway Company">Leipzig-Dresden Railway</a> and <a href="/wiki/Royal_Bavarian_State_Railways" title="Royal Bavarian State Railways">Royal Bavarian State Railways</a> (Königlich Bayerische Staatsbahn) built several 2-2-2 classes 1841-1859. Similarly, the <a href="/wiki/Grand_Duchy_of_Mecklenburg_Friedrich-Franz_Railway" title="Grand Duchy of Mecklenburg Friedrich-Franz Railway">Grand Duchy of Mecklenburg Friedrich-Franz Railway</a> grouped various 2-2-2 steam locomotives procured from German manufacturers between 1848 and 1863 into its <a href="/wiki/Mecklenburg_I" title="Mecklenburg I">Mecklenburg I</a> class. </p> <div class="mw-heading mw-heading3"><h3 id="Austria">Austria</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=2-2-2&action=edit&section=7" title="Edit section: Austria"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The <a href="/wiki/Imperial_Austrian_State_Railways" class="mw-redirect" title="Imperial Austrian State Railways">Imperial Austrian State Railways</a> (kaiserlich-königliche österreichische Staatsbahnen or kkStB) built two successful <a href="/wiki/KkStB_Class_112" class="mw-redirect" title="KkStB Class 112">locomotives</a> of this wheel arrangement in 1907. Similarly the Federal Railway of Austria (BBÖ) built two examples of an express tank <a href="/wiki/BB%C3%96_Class_12" class="mw-redirect" title="BBÖ Class 12">locomotive</a> in 1934 and 1937. </p> <div class="mw-heading mw-heading3"><h3 id="Latvia">Latvia</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=2-2-2&action=edit&section=8" title="Edit section: Latvia"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div><p> One of last 2-2-2 tank locomotives were ordered by <a href="/wiki/Latvian_Railways" title="Latvian Railways">Latvian Railways</a>, for local traffic. The locomotives Tk class were designed by German Hohenzollern, and 20 were manufactured in Germany and Latvia in 1928-1934.<sup id="cite_ref-alt_13-0" class="reference"><a href="#cite_note-alt-13"><span class="cite-bracket">[</span>13<span class="cite-bracket">]</span></a></sup> They were next seized by Soviet railways. After World War II one served in Poland as OKa1 class.<sup id="cite_ref-alt_13-1" class="reference"><a href="#cite_note-alt-13"><span class="cite-bracket">[</span>13<span class="cite-bracket">]</span></a></sup></p><figure class="mw-default-size mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/File:PioneerLocomotiveSmithsonian.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/b/b0/PioneerLocomotiveSmithsonian.jpg/220px-PioneerLocomotiveSmithsonian.jpg" decoding="async" width="220" height="154" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/b/b0/PioneerLocomotiveSmithsonian.jpg/330px-PioneerLocomotiveSmithsonian.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/b/b0/PioneerLocomotiveSmithsonian.jpg/440px-PioneerLocomotiveSmithsonian.jpg 2x" data-file-width="469" data-file-height="329" /></a><figcaption>The locomotive "Pioneer" in service on the <a href="/wiki/Cumberland_Valley_Railroad" title="Cumberland Valley Railroad">Cumberland Valley Railroad</a> in the 1880s or 1890s.</figcaption></figure> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:The_Queen_in_a_somewhat_dilapidated_condition._Nevertheless,_my_tenth_visit_was_of_worth%5E%5E_-_Flickr_-_Dr._Santulan_Mahanta_(cropped).jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/c/c0/The_Queen_in_a_somewhat_dilapidated_condition._Nevertheless%2C_my_tenth_visit_was_of_worth%5E%5E_-_Flickr_-_Dr._Santulan_Mahanta_%28cropped%29.jpg/220px-The_Queen_in_a_somewhat_dilapidated_condition._Nevertheless%2C_my_tenth_visit_was_of_worth%5E%5E_-_Flickr_-_Dr._Santulan_Mahanta_%28cropped%29.jpg" decoding="async" width="220" height="165" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/c/c0/The_Queen_in_a_somewhat_dilapidated_condition._Nevertheless%2C_my_tenth_visit_was_of_worth%5E%5E_-_Flickr_-_Dr._Santulan_Mahanta_%28cropped%29.jpg/330px-The_Queen_in_a_somewhat_dilapidated_condition._Nevertheless%2C_my_tenth_visit_was_of_worth%5E%5E_-_Flickr_-_Dr._Santulan_Mahanta_%28cropped%29.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/c/c0/The_Queen_in_a_somewhat_dilapidated_condition._Nevertheless%2C_my_tenth_visit_was_of_worth%5E%5E_-_Flickr_-_Dr._Santulan_Mahanta_%28cropped%29.jpg/440px-The_Queen_in_a_somewhat_dilapidated_condition._Nevertheless%2C_my_tenth_visit_was_of_worth%5E%5E_-_Flickr_-_Dr._Santulan_Mahanta_%28cropped%29.jpg 2x" data-file-width="3677" data-file-height="2758" /></a><figcaption>"Fairy Queen" Operating in 2011</figcaption></figure> <div class="mw-heading mw-heading2"><h2 id="Preserved_examples_and_replicas">Preserved examples and replicas</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=2-2-2&action=edit&section=9" title="Edit section: Preserved examples and replicas"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li>A replica of <a href="/wiki/Adler_(locomotive)" title="Adler (locomotive)">Adler</a> of 1835</li> <li>A replica of <a href="/wiki/GWR_Star_Class#Replica" title="GWR Star Class">North Star</a> of 1837</li> <li>A replica of <a href="/wiki/De_Arend_(locomotive)" title="De Arend (locomotive)">Arend</a> of 1839</li> <li>A replica of Odin of 1846 (constructed at <a href="/wiki/Roskilde" title="Roskilde">Roskilde</a> roundhouse between 2004–2018)</li> <li>LNWR No 1868 (formerly named Columbine) built 1845</li> <li>The <a href="/wiki/LNWR_2-2-2_3020_Cornwall" title="LNWR 2-2-2 3020 Cornwall">LNWR 2-2-2 3020 Cornwall</a> built 1847</li> <li>GS&WR Bury No. 36 of 1848, on display at <a href="/wiki/Cork_Kent_railway_station" title="Cork Kent railway station">Cork Kent railway station</a> in <a href="/wiki/Republic_of_Ireland" title="Republic of Ireland">Ireland</a></li> <li>CVRR 2-2-2, <i>Pioneer</i>, built by the Union Works, Boston Massachusetts, 1851. Held by the <a href="/wiki/Smithsonian" class="mw-redirect" title="Smithsonian">Smithsonian</a></li> <li>The <a href="/wiki/Fairy_Queen_(locomotive)" title="Fairy Queen (locomotive)">East Indian Railway No. 22</a>, also known as "Fairy Queen" is a 2-2-2T built in 1855 for the East Indian Railway. It still operates for them today, making it the oldest operating steam locomotive in the world in regular service.</li> <li>BBÖ Class 12 locomotive of 1937</li> <li>CP 1 - D Luiz I, a 2-2-2 locomotive, built by <a href="/wiki/Beyer,_Peacock_%26_Company" class="mw-redirect" title="Beyer, Peacock & Company">Beyer, Peacock & Company</a> in 1862 for the Portuguese Royal Train. Currently is under major restoration at <a href="/wiki/Entroncamento_Municipality" class="mw-redirect" title="Entroncamento Municipality">Entroncamento</a> yard together with the Royal Train wagons.</li> <li><a href="/wiki/OKa1" title="OKa1">OKa1</a> (Latvian Tk-235) in <a href="/wiki/Railway_Museum_in_Warsaw" class="mw-redirect" title="Railway Museum in Warsaw">Railway Museum in Warsaw</a><sup id="cite_ref-alt_13-2" class="reference"><a href="#cite_note-alt-13"><span class="cite-bracket">[</span>13<span class="cite-bracket">]</span></a></sup></li></ul> <div class="mw-heading mw-heading2"><h2 id="See_also">See also</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=2-2-2&action=edit&section=10" title="Edit section: See also"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/Wheel_arrangement" title="Wheel arrangement">Wheel arrangement</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=2-2-2&action=edit&section=11" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist"> <div class="mw-references-wrap mw-references-columns"><ol class="references"> <li id="cite_note-1"><span class="mw-cite-backlink"><b><a href="#cite_ref-1">^</a></b></span> <span class="reference-text">Hamilton Ellis, <i>The pictorial encyclopaedia of railways,</i> Hamlyn, 1968, p.37.</span> </li> <li id="cite_note-2"><span class="mw-cite-backlink"><b><a href="#cite_ref-2">^</a></b></span> <span class="reference-text">Ellis, <i>The pictorial encyclopaedia of railways,</i> p.37.</span> </li> <li id="cite_note-3"><span class="mw-cite-backlink"><b><a href="#cite_ref-3">^</a></b></span> <span class="reference-text">Science Museum, The British Railway Locomotive 1803–1853, H.M.S.O, 1958, p.13.</span> </li> <li id="cite_note-4"><span class="mw-cite-backlink"><b><a href="#cite_ref-4">^</a></b></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite id="CITEREFReed1953" class="citation book cs1">Reed, P.J.T. (February 1953). White, D.E. (ed.). <i>The Locomotives of the Great Western Railway, part two: Broad Gauge</i>. Kenilworth: <a href="/wiki/Railway_Correspondence_%26_Travel_Society" class="mw-redirect" title="Railway Correspondence & Travel Society">Railway Correspondence & Travel Society</a>. p. B9. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/0-901115-32-0" title="Special:BookSources/0-901115-32-0"><bdi>0-901115-32-0</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=The+Locomotives+of+the+Great+Western+Railway%2C+part+two%3A+Broad+Gauge&rft.place=Kenilworth&rft.pages=B9&rft.pub=Railway+Correspondence+%26+Travel+Society&rft.date=1953-02&rft.isbn=0-901115-32-0&rft.aulast=Reed&rft.aufirst=P.J.T.&rfr_id=info%3Asid%2Fen.wikipedia.org%3A2-2-2" class="Z3988"></span></span> </li> <li id="cite_note-5"><span class="mw-cite-backlink"><b><a href="#cite_ref-5">^</a></b></span> <span class="reference-text">D.L. Bradley, Locomotives of the London Brighton and South Coast Railway, Part 1, Railway Correspondence & Travel Society, 1969, p.36.</span> </li> <li id="cite_note-6"><span class="mw-cite-backlink"><b><a href="#cite_ref-6">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFTabor1956" class="citation book cs1">Tabor, F.J. (February 1956). White, D.E. (ed.). <i>The Locomotives of the Great Western Railway, part four: Six-wheeled Tender Engines</i>. Kenilworth: <a href="/wiki/Railway_Correspondence_%26_Travel_Society" class="mw-redirect" title="Railway Correspondence & Travel Society">Railway Correspondence & Travel Society</a>. p. D15.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=The+Locomotives+of+the+Great+Western+Railway%2C+part+four%3A+Six-wheeled+Tender+Engines&rft.place=Kenilworth&rft.pages=D15&rft.pub=Railway+Correspondence+%26+Travel+Society&rft.date=1956-02&rft.aulast=Tabor&rft.aufirst=F.J.&rfr_id=info%3Asid%2Fen.wikipedia.org%3A2-2-2" class="Z3988"></span></span> </li> <li id="cite_note-7"><span class="mw-cite-backlink"><b><a href="#cite_ref-7">^</a></b></span> <span class="reference-text"><a href="#CITEREFTabor1956">Tabor 1956</a>, p. D19</span> </li> <li id="cite_note-8"><span class="mw-cite-backlink"><b><a href="#cite_ref-8">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFle_Fleming1954" class="citation book cs1">le Fleming, H.M. (October 1954). White, D.E. (ed.). <i>The Locomotives of the Great Western Railway, part seven: Dean's Larger Tender Engines</i>. Kenilworth: <a href="/wiki/Railway_Correspondence_%26_Travel_Society" class="mw-redirect" title="Railway Correspondence & Travel Society">Railway Correspondence & Travel Society</a>. pp. G7–G8. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/0-901115-18-5" title="Special:BookSources/0-901115-18-5"><bdi>0-901115-18-5</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=The+Locomotives+of+the+Great+Western+Railway%2C+part+seven%3A+Dean%27s+Larger+Tender+Engines&rft.place=Kenilworth&rft.pages=G7-G8&rft.pub=Railway+Correspondence+%26+Travel+Society&rft.date=1954-10&rft.isbn=0-901115-18-5&rft.aulast=le+Fleming&rft.aufirst=H.M.&rfr_id=info%3Asid%2Fen.wikipedia.org%3A2-2-2" class="Z3988"></span></span> </li> <li id="cite_note-r2-9"><span class="mw-cite-backlink"><b><a href="#cite_ref-r2_9-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1 cs1-prop-foreign-lang-source"><a rel="nofollow" class="external text" href="http://www.tassignon.be/trains/Vapeur%20Belge/Vapeur_Belge.htm">"La Construction des LOCOMOTIVES à VAPEUR en Belgique"</a>. <i>www.tassignon.be</i> (in French).</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=www.tassignon.be&rft.atitle=La+Construction+des+LOCOMOTIVES+%C3%A0+VAPEUR+en+Belgique&rft_id=http%3A%2F%2Fwww.tassignon.be%2Ftrains%2FVapeur%2520Belge%2FVapeur_Belge.htm&rfr_id=info%3Asid%2Fen.wikipedia.org%3A2-2-2" class="Z3988"></span></span> </li> <li id="cite_note-10"><span class="mw-cite-backlink"><b><a href="#cite_ref-10">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1 cs1-prop-foreign-lang-source"><a rel="nofollow" class="external text" href="http://home.scarlet.be/~tsd79548/lebelgevresse.htm">"La loco à vapeur de Vresse-sur-semois"</a>. <i>home.scarlet.be</i> (in French).</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=home.scarlet.be&rft.atitle=La+loco+%C3%A0+vapeur+de+Vresse-sur-semois&rft_id=http%3A%2F%2Fhome.scarlet.be%2F~tsd79548%2Flebelgevresse.htm&rfr_id=info%3Asid%2Fen.wikipedia.org%3A2-2-2" class="Z3988"></span></span> </li> <li id="cite_note-11"><span class="mw-cite-backlink"><b><a href="#cite_ref-11">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.internationalsteam.co.uk/trains/italy01.htm">"The Naples Railway Museum"</a>. <i>www.internationalsteam.co.uk</i><span class="reference-accessdate">. Retrieved <span class="nowrap">13 April</span> 2018</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=www.internationalsteam.co.uk&rft.atitle=The+Naples+Railway+Museum&rft_id=http%3A%2F%2Fwww.internationalsteam.co.uk%2Ftrains%2Fitaly01.htm&rfr_id=info%3Asid%2Fen.wikipedia.org%3A2-2-2" class="Z3988"></span></span> </li> <li id="cite_note-12"><span class="mw-cite-backlink"><b><a href="#cite_ref-12">^</a></b></span> <span class="reference-text">Christopher Chant, 'The World's Railways, Regency House Publishing (2001)1552671607</span> </li> <li id="cite_note-alt-13"><span class="mw-cite-backlink">^ <a href="#cite_ref-alt_13-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-alt_13-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-alt_13-2"><sup><i><b>c</b></i></sup></a></span> <span class="reference-text">Altbergs, Toms. <i>The Latvian Tk tanks</i>, "Locomotives International" No.101, p. 54-56</span> </li> </ol></div></div> <div class="mw-heading mw-heading2"><h2 id="External_links">External links</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=2-2-2&action=edit&section=12" title="Edit section: External links"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a rel="nofollow" class="external text" href="https://www.flickr.com/photos/whatsthatpicture/4728308475/lightbox/">GNR No. 229, photographed around 1900</a></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFWinchester1936" class="citation cs2">Winchester, Clarence, ed. (1936), "Some famous singles", <a rel="nofollow" class="external text" href="http://www.railwaywondersoftheworld.com/singles.html"><i>Railway Wonders of the World</i></a>, pp. 1091–1099</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=bookitem&rft.atitle=Some+famous+singles&rft.btitle=Railway+Wonders+of+the+World&rft.pages=1091-1099&rft.date=1936&rft_id=http%3A%2F%2Fwww.railwaywondersoftheworld.com%2Fsingles.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3A2-2-2" class="Z3988"></span> illustrated description of some famous singles</li></ul> <p><br /> </p> <div class="navbox-styles"><style data-mw-deduplicate="TemplateStyles:r1129693374">.mw-parser-output .hlist dl,.mw-parser-output .hlist ol,.mw-parser-output .hlist ul{margin:0;padding:0}.mw-parser-output .hlist dd,.mw-parser-output .hlist dt,.mw-parser-output .hlist li{margin:0;display:inline}.mw-parser-output .hlist.inline,.mw-parser-output .hlist.inline dl,.mw-parser-output .hlist.inline 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navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:Whyte_types" title="Template:Whyte types"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Whyte_types" title="Template talk:Whyte types"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Whyte_types" title="Special:EditPage/Template:Whyte types"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Steam_locomotive_wheel_arrangements_(Whyte_notation)" style="font-size:114%;margin:0 4em"><a href="/wiki/Whyte_notation" title="Whyte notation">Steam locomotive wheel arrangements (Whyte notation)</a></div></th></tr><tr><th scope="row" class="navbox-group" style="background:#edd4bd;;width:1%">Single engine types</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/0-2-2" title="0-2-2">0-2-2</a></li> <li><a href="/wiki/0-2-4" title="0-2-4">0-2-4</a></li> <li><a href="/wiki/2-2-0" title="2-2-0">2-2-0</a></li> <li><a class="mw-selflink selflink">2-2-2</a></li> <li><a href="/wiki/2-2-4T" title="2-2-4T">2-2-4T</a></li> <li><a href="/wiki/4-2-0" title="4-2-0">4-2-0</a></li> <li><a href="/wiki/4-2-2" title="4-2-2">4-2-2</a></li> <li><a href="/wiki/4-2-4T" title="4-2-4T">4-2-4T</a></li> <li><a href="/wiki/6-2-0" title="6-2-0">6-2-0</a></li></ul> <ul><li><a href="/wiki/0-3-0" title="0-3-0">0-3-0</a> (monorail)</li></ul> <ul><li><a href="/wiki/0-4-0" title="0-4-0">0-4-0</a></li> <li><a href="/wiki/0-4-0%2B4" title="0-4-0+4">0-4-0+4</a></li> <li><a href="/wiki/0-4-2" title="0-4-2">0-4-2</a></li> <li><a href="/wiki/0-4-4T" title="0-4-4T">0-4-4T</a></li> <li><a href="/wiki/0-4-6T" title="0-4-6T">0-4-6T</a></li> <li><a href="/wiki/2-4-0" title="2-4-0">2-4-0</a></li> <li><a href="/wiki/2-4-2" title="2-4-2">2-4-2</a></li> <li><a href="/wiki/2-4-4T" title="2-4-4T">2-4-4T</a></li> <li><a href="/wiki/2-4-6T" title="2-4-6T">2-4-6T</a></li> <li><a href="/wiki/4-4-0" title="4-4-0">4-4-0</a></li> <li><a href="/wiki/4-4-2_(locomotive)" title="4-4-2 (locomotive)">4-4-2</a></li> <li><a href="/wiki/4-4-4" title="4-4-4">4-4-4</a></li> <li><a href="/wiki/4-4-6" title="4-4-6">4-4-6</a></li></ul> <ul><li><a href="/wiki/0-6-0" title="0-6-0">0-6-0</a></li> <li><a href="/wiki/0-6-2" title="0-6-2">0-6-2</a></li> <li><a href="/wiki/0-6-4T" title="0-6-4T">0-6-4T</a></li> <li><a href="/wiki/0-6-6T" title="0-6-6T">0-6-6T</a></li> <li><a href="/wiki/2-6-0" title="2-6-0">2-6-0</a></li> <li><a href="/wiki/2-6-2" title="2-6-2">2-6-2</a></li> <li><a href="/wiki/2-6-4" title="2-6-4">2-6-4</a></li> <li><a href="/wiki/2-6-6T" title="2-6-6T">2-6-6T</a></li> <li><a href="/wiki/4-6-0" title="4-6-0">4-6-0</a></li> <li><a href="/wiki/4-6-2" title="4-6-2">4-6-2</a></li> <li><a href="/wiki/4-6-4" title="4-6-4">4-6-4</a></li></ul> <ul><li><a href="/wiki/0-8-0" title="0-8-0">0-8-0</a></li> <li><a href="/wiki/0-8-2" title="0-8-2">0-8-2</a></li> <li><a href="/wiki/0-8-4T" title="0-8-4T">0-8-4T</a></li> <li><a href="/wiki/0-8-6" class="mw-redirect" title="0-8-6">0-8-6</a></li> <li><a href="/wiki/2-8-0" title="2-8-0">2-8-0</a></li> <li><a href="/wiki/2-8-2" title="2-8-2">2-8-2</a></li> <li><a href="/wiki/2-8-4" title="2-8-4">2-8-4</a></li> <li><a href="/wiki/2-8-6" class="mw-redirect" title="2-8-6">2-8-6</a></li> <li><a href="/wiki/4-8-0" title="4-8-0">4-8-0</a></li> <li><a href="/wiki/4-8-2" title="4-8-2">4-8-2</a></li> <li><a href="/wiki/4-8-4" title="4-8-4">4-8-4</a></li> <li><a href="/wiki/4-8-6" title="4-8-6">4-8-6</a></li> <li><a href="/wiki/6-8-6" title="6-8-6">6-8-6</a></li></ul> <ul><li><a href="/wiki/0-10-0" title="0-10-0">0-10-0</a></li> <li><a href="/wiki/0-10-2" title="0-10-2">0-10-2</a></li> <li><a href="/wiki/2-10-0" title="2-10-0">2-10-0</a></li> <li><a href="/wiki/2-10-2" title="2-10-2">2-10-2</a></li> <li><a href="/wiki/2-10-4" title="2-10-4">2-10-4</a></li> <li><a href="/wiki/4-10-0" title="4-10-0">4-10-0</a></li> <li><a href="/wiki/4-10-2" title="4-10-2">4-10-2</a></li></ul> <ul><li><a href="/wiki/0-12-0" title="0-12-0">0-12-0</a></li> <li><a href="/wiki/2-12-0" title="2-12-0">2-12-0</a></li> <li><a href="/wiki/2-12-2" title="2-12-2">2-12-2</a></li> <li><a href="/wiki/2-12-4T" title="2-12-4T">2-12-4</a></li> <li><a href="/wiki/Union_Pacific_9000_Class" title="Union Pacific 9000 Class">4-12-2</a></li></ul> <ul><li><a href="/wiki/Soviet_locomotive_class_AA20" title="Soviet locomotive class AA20">4-14-4</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="background:#edd4bd;;width:1%"><a href="/wiki/Divided_drive_(locomotive)" title="Divided drive (locomotive)">Divided drive</a> and <br /><a href="/wiki/Duplex_locomotive" title="Duplex locomotive">Duplex</a> engine types</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/0-2-2-0" title="0-2-2-0">0-2-2-0</a></li> <li><a href="/wiki/2-2-2-0" title="2-2-2-0">2-2-2-0</a></li> <li><a href="/wiki/2-2-2-2" title="2-2-2-2">2-2-2-2</a></li> <li><a href="/wiki/2-2-4-0T" title="2-2-4-0T">2-2-4-0T</a></li> <li><a href="/wiki/4-2-2-0" title="4-2-2-0">4-2-2-0</a></li></ul> <ul><li><a href="/wiki/2-4-6-2" title="2-4-6-2">2-4-6-2</a></li> <li><a href="/wiki/4-4-4-4" title="4-4-4-4">4-4-4-4</a></li> <li><a href="/wiki/6-4-4-6" title="6-4-4-6">6-4-4-6</a></li> <li><a href="/wiki/4-4-6-4" title="4-4-6-4">4-4-6-4</a></li> <li><a href="/wiki/4-6-4-4" title="4-6-4-4">4-6-4-4</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="background:#edd4bd;;width:1%"><a href="/wiki/Articulated_locomotive" title="Articulated locomotive">Articulated locomotives</a> <br /><a href="/wiki/Fairlie_locomotive" title="Fairlie locomotive">Fairlie</a>, <a href="/wiki/Meyer_locomotive" title="Meyer locomotive">Meyer</a> <br />and <a href="/wiki/Garratt_locomotive" title="Garratt locomotive">Garratt</a> types</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/0-4-0%2B0-4-0" title="0-4-0+0-4-0">0-4-0+0-4-0</a></li> <li><a href="/wiki/2-4-0%2B0-4-2" title="2-4-0+0-4-2">2-4-0+0-4-2</a></li> <li><a href="/wiki/2-4-2%2B2-4-2" title="2-4-2+2-4-2">2-4-2+2-4-2</a></li> <li><a href="/wiki/4-4-2%2B2-4-4" title="4-4-2+2-4-4">4-4-2+2-4-4</a></li></ul> <ul><li><a href="/wiki/0-6-0%2B0-6-0" title="0-6-0+0-6-0">0-6-0+0-6-0</a></li> <li><a href="/wiki/0-6-2%2B2-6-0" class="mw-redirect" title="0-6-2+2-6-0">0-6-2+2-6-0</a></li> <li><a href="/wiki/2-6-0%2B0-6-2" title="2-6-0+0-6-2">2-6-0+0-6-2</a></li> <li><a href="/wiki/2-6-2%2B2-6-2" title="2-6-2+2-6-2">2-6-2+2-6-2</a></li> <li><a href="/wiki/4-6-0%2B0-6-4" title="4-6-0+0-6-4">4-6-0+0-6-4</a></li> <li><a href="/wiki/4-6-2%2B2-6-4" title="4-6-2+2-6-4">4-6-2+2-6-4</a></li> <li><a href="/wiki/4-6-4%2B4-6-4" title="4-6-4+4-6-4">4-6-4+4-6-4</a></li></ul> <ul><li><a href="/wiki/2-8-0%2B0-8-2" title="2-8-0+0-8-2">2-8-0+0-8-2</a></li> <li><a href="/wiki/2-8-2%2B2-8-2" title="2-8-2+2-8-2">2-8-2+2-8-2</a></li> <li><a href="/wiki/4-8-0%2B0-8-4" title="4-8-0+0-8-4">4-8-0+0-8-4</a></li> <li><a href="/wiki/4-8-2%2B2-8-4" title="4-8-2+2-8-4">4-8-2+2-8-4</a></li> <li><a href="/wiki/4-8-4%2B4-8-4" title="4-8-4+4-8-4">4-8-4+4-8-4</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="background:#edd4bd;;width:1%"><a href="/wiki/Articulated_locomotive" title="Articulated locomotive">Articulated locomotives</a> <br /><a href="/wiki/Mallet_locomotive" title="Mallet locomotive">Mallet</a> types</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/0-4-4-0" title="0-4-4-0">0-4-4-0</a></li> <li><a href="/wiki/0-4-4-2" title="0-4-4-2">0-4-4-2</a></li> <li><a href="/wiki/2-4-4-0" title="2-4-4-0">2-4-4-0</a></li> <li><a href="/wiki/2-4-4-2" title="2-4-4-2">2-4-4-2</a></li></ul> <ul><li><a href="/wiki/0-6-6-0" title="0-6-6-0">0-6-6-0</a></li> <li><a href="/wiki/2-6-6-0" title="2-6-6-0">2-6-6-0</a></li> <li><a href="/wiki/2-6-6-2" title="2-6-6-2">2-6-6-2</a></li> <li><a href="/wiki/2-6-6-4" title="2-6-6-4">2-6-6-4</a></li> <li><a href="/wiki/2-6-6-6" title="2-6-6-6">2-6-6-6</a></li> <li><a href="/wiki/2-6-8-0" title="2-6-8-0">2-6-8-0</a></li> <li><a href="/wiki/4-4-6-2" title="4-4-6-2">4-4-6-2</a></li> <li><a href="/wiki/4-6-6-2" title="4-6-6-2">4-6-6-2</a></li> <li><a href="/wiki/4-6-6-4" title="4-6-6-4">4-6-6-4</a></li></ul> <ul><li><a href="/wiki/0-8-6-0" class="mw-redirect" title="0-8-6-0">0-8-6-0</a></li> <li><a href="/wiki/0-8-8-0" title="0-8-8-0">0-8-8-0</a></li> <li><a href="/wiki/2-8-8-0" title="2-8-8-0">2-8-8-0</a></li> <li><a href="/wiki/2-8-8-2" title="2-8-8-2">2-8-8-2</a></li> <li><a href="/wiki/2-8-8-4" title="2-8-8-4">2-8-8-4</a></li> <li><a href="/wiki/4-8-8-2" title="4-8-8-2">4-8-8-2</a></li> <li><a href="/wiki/4-8-8-4" title="4-8-8-4">4-8-8-4</a></li></ul> <ul><li><a href="/wiki/2-10-10-2" title="2-10-10-2">2-10-10-2</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="background:#edd4bd;;width:1%"><a href="/wiki/Articulated_locomotive" title="Articulated locomotive">Articulated locomotives</a> <br /><a href="/wiki/Triplex_locomotive" title="Triplex locomotive">Triplex</a> and other <a href="/wiki/Multiplex_locomotive" title="Multiplex locomotive">Multiplex</a> types</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/2-8-8-8-2" class="mw-redirect" title="2-8-8-8-2">2-8-8-8-2</a></li> <li><a href="/wiki/2-8-8-8-4" title="2-8-8-8-4">2-8-8-8-4</a></li></ul> <ul><li><a href="/wiki/Multiplex_locomotive#United_States" title="Multiplex locomotive">2-8-8-8-8-2</a></li> <li><a href="/wiki/Multiplex_locomotive#Belgium" title="Multiplex locomotive">0-6-2+2-4-2-4-2+2-6-0</a></li> <li><a href="/wiki/Multiplex_locomotive#Super-Garratt" title="Multiplex locomotive">2-6-6-2+2-6-6-2</a></li></ul> <ul><li><a href="/wiki/Multiplex_locomotive#Quintuplex_locomotives" title="Multiplex locomotive">2-8-8-8-8-8-2</a></li> <li><a href="/wiki/Multiplex_locomotive#Quintuplex_locomotives" title="Multiplex locomotive">2-10-10-10-10-10-2</a></li></ul> <ul><li><a href="/wiki/Multiplex_locomotive#Hexaplex_locomotive" title="Multiplex locomotive">2-4-4-2+2-8-8-2+2-4-4-2</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="background:#edd4bd;;width:1%"><a href="/wiki/Articulated_locomotive" title="Articulated locomotive">Articulated locomotives</a><br /><a href="/wiki/Engerth_locomotive" title="Engerth locomotive">Engerth</a> types</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/0-4-4T" title="0-4-4T">0-4-4</a></li> <li><a href="/wiki/0-4-6" class="mw-redirect" title="0-4-6">0-4-6</a></li></ul> <ul><li><a href="/wiki/2-6-4" title="2-6-4">2-6-4</a></li> <li><a href="/wiki/0-6-4" class="mw-redirect" title="0-6-4">0-6-4</a></li> <li><a href="/wiki/Co-Bo" title="Co-Bo">0-6-4-0</a></li></ul> <ul><li><a href="/wiki/0-8-4T" title="0-8-4T">0-8-4</a></li> <li><a href="/wiki/0-8-6" class="mw-redirect" title="0-8-6">0-8-6</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="background:#edd4bd;;width:1%"><a href="/wiki/Geared_locomotive" class="mw-redirect" title="Geared locomotive">Geared locomotives</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Shay_locomotive" title="Shay locomotive">Shay</a></li> <li><a href="/wiki/Climax_locomotive" title="Climax locomotive">Climax</a></li> <li><a href="/wiki/Heisler_locomotive" title="Heisler locomotive">Heisler</a></li> <li><a href="/wiki/Willamette_locomotive" title="Willamette locomotive">Willamette</a></li></ul> </div></td></tr><tr><td class="navbox-abovebelow" colspan="2" style="background:#edd4bd;"><div> <ul><li>Other notation forms: <a href="/wiki/AAR_wheel_arrangement" title="AAR wheel arrangement">AAR</a></li> <li><a href="/wiki/Swiss_locomotive_and_railcar_classification" title="Swiss locomotive and railcar classification">Swiss</a></li> <li><a href="/wiki/UIC_classification_of_locomotive_axle_arrangements" title="UIC classification of locomotive axle arrangements">UIC</a></li></ul> </div></td></tr></tbody></table></div>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?type=1x1" alt="" width="1" height="1" style="border: none; position: absolute;"></noscript> <div class="printfooter" data-nosnippet="">Retrieved from "<a dir="ltr" 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