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Under the Whyte notation for the classification of steam locomotives, 2-12-2 represents the wheel arrangement of two leading wheels on one axle (usually in a leading truck), twelve powered and coupled driving wheels on six axles, and two trailing wheels on one axle (usually in a trailing truck).

Equivalent classifications[edit]

Other equivalent classifications are:

Other names[edit]

This wheel arrangement is infrequently called "Javanic", after the use of large 2-12-2Ts in Java.