4-2-0
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Under the Whyte notation for the classification of steam locomotives, 4-2-0 represents the wheel arrangement of four leading wheels on two axles, two powered driving wheels on one axle and no trailing
Hackensack and New York Railroad 4-2-0
Norris engine for the Birmingham and Bristol Railway
Crampton 4-2-0 built for the Chemin de fer de l’Est
Dutton road-rail tractor, a modified Yorkshire steam tractor, c. 1924
Whyte notation
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The Whyte notation is a classification method for locomotives based on wheel arrangement. While the Whyte notation is most commonly used when referring to steam locomotives, it can also be applied to
4-2-0
…Under the Whyte notation for the classification of steam locomotives, 4-2-0 represents the wheel arrangement of four leading wheels on two axles, two powered driving wheels on…
Whyte notation from a handbook for railroad industry workers published in 1906