Under the Whyte notation for the classification of steam locomotives, a 4-8-2 locomotive has four leading wheels (generally arranged in a leading truck), eight coupled driving wheels and two trailing wheels (often but not always in a trailing truck). This type of steam locomotive's also known as the Mountain type. Other equivalent classifications are: UIC classification: 2'D1' (also known as German classification and Italian classification) French classification: 241 Bulgarian classification: 2… (More on 4-8-2)